{"pageNumber":"1544","pageRowStart":"38575","pageSize":"25","recordCount":40797,"records":[{"id":14060,"text":"ofr80233 - 1980 - Chemical, spectrographic, and modal analyses of syenitic rocks, thorium veins, and carbonatite in the Powderhorn District, Gunnison County, Colorado","interactions":[],"lastModifiedDate":"2012-02-02T00:06:48","indexId":"ofr80233","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-233","title":"Chemical, spectrographic, and modal analyses of syenitic rocks, thorium veins, and carbonatite in the Powderhorn District, Gunnison County, Colorado","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80233","usgsCitation":"Hedlund, D.C., and Olson, J.C., 1980, Chemical, spectrographic, and modal analyses of syenitic rocks, thorium veins, and carbonatite in the Powderhorn District, Gunnison County, Colorado: U.S. Geological Survey Open-File Report 80-233, iii, 45 p. ;28 cm., https://doi.org/10.3133/ofr80233.","productDescription":"iii, 45 p. ;28 cm.","costCenters":[],"links":[{"id":146165,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0233/report-thumb.jpg"},{"id":42705,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0233/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dee4b07f02db5e3146","contributors":{"authors":[{"text":"Hedlund, David Carl","contributorId":53762,"corporation":false,"usgs":true,"family":"Hedlund","given":"David","email":"","middleInitial":"Carl","affiliations":[],"preferred":false,"id":168867,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Olson, Jerry Chipman","contributorId":57869,"corporation":false,"usgs":true,"family":"Olson","given":"Jerry","email":"","middleInitial":"Chipman","affiliations":[],"preferred":false,"id":168868,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23957,"text":"ofr80581 - 1980 - Ground-water models for water resources planning","interactions":[],"lastModifiedDate":"2012-02-02T00:08:00","indexId":"ofr80581","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-581","title":"Ground-water models for water resources planning","docAbstract":"In the past decade hydrologists have emphasized the development of computer-based mathematical models to aid in the understanding of flow, the transport of solutes, transport of heat, and deformation in the groundwater system. These models have been used to provide information and predictions for water managers. Too frequently, groundwater was neglected in water-resource planning because managers believed that it could not be adequately evaluated in terms of availability, quality, and effect of development on surface water supplies. Now, however, with newly developed digital groundwater models, effects of development can be predicted. Such models have been used to predict hydrologic and quality changes under different stresses. These models have grown in complexity over the last 10 years from simple one-layer flow models to three-dimensional simulations of groundwater flow which may include solute transport, heat transport, effects of land subsidence, and encroachment of salt water. This paper illustrates, through case histories, how predictive groundwater models have provided the information needed for the sound planning and management of water resources in the United States. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80581","issn":"0094-9140","usgsCitation":"Moore, J.E., 1980, Ground-water models for water resources planning: U.S. Geological Survey Open-File Report 80-581, 25 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr80581.","productDescription":"25 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":154933,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0581/report-thumb.jpg"},{"id":53155,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0581/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db69807b","contributors":{"authors":[{"text":"Moore, John E.","contributorId":33688,"corporation":false,"usgs":true,"family":"Moore","given":"John","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":191040,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24044,"text":"ofr80712 - 1980 - Graded storm sand layers offshore from the Yukon Delta, Alaska","interactions":[],"lastModifiedDate":"2023-11-22T23:02:30.280385","indexId":"ofr80712","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-712","title":"Graded storm sand layers offshore from the Yukon Delta, Alaska","docAbstract":"

The northern Bering Sea has a history of severe storm surges. The most recent, and perhaps the worst in historical times, occurred in November, 1974 (Fathauer, 1975). Evidence of storm surge events is exhibited in sea-floor stratigraphy as well as shoreline flooding and indicates that significant widespread changes in sea-floor sedimentation take place (Nelson and Creager, 1977). These changes have implications for installations on the sea floor and for mass transport of pollutants.

This paper describes the interbedded sand layers found in southern Norton Sound off the modern Yukon Delta that are deposited by the storm surge events. Such deposits are evident in both modern and ancient deposits of epicontinental shelves (Hays, 1967; Howard and Reineck, in press; Anderton, 1976.). These graded sand layers in very shallow water mimic many of the features of thin-bedded turbidite sands, although the shallow water deposits are thought to have a very different mechanism of deposition related to storm surge processes.

Two factors in the oceanographic setting of northern Bering Sea magnify the effects of storm surge. The sea floor is very shallow (less than 20 m deep over wide areas) particularly in Norton Sound. Consequently there is intensive wave reworking which causes extensive sea-floor erosion, mass movement, displacement, and offshore progradation of significant amounts of sediment during storm surges; The second factor is a system of strong dynamic_ bottom currents that can move large amounts of sediment northward to Chukchi Sea during normal weather. Much more sediment is moved when the current is reinforced by relaxing of the sea surface set-up caused by storm surge (Fig. 1) (Flemming and Heggarty, 1966; Coachman et al., 1976; Cacchione and Drake, 1979; Schumacher and Tripp, 1979).

Another important influence on the sedimentation in southern Norton Sound is the effect of seasonal processes on the Yukon River delta, During the winter months from November to May the Yukon River averages 40,000 cfs when the ice-covered river is fed mainly by base flow (Dupre, 1976). Within less than a week of river breakup, peak discharges may reach 1,000,000 cfs or more and then decline throughout the summer.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr80712","usgsCitation":"Nelson, C.H., 1980, Graded storm sand layers offshore from the Yukon Delta, Alaska: U.S. Geological Survey Open-File Report 80-712, 14 p., https://doi.org/10.3133/ofr80712.","productDescription":"14 p.","costCenters":[],"links":[{"id":156316,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0712/report-thumb.jpg"},{"id":422862,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0712/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon Delta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -161.58644631128854,\n 63.49574914683663\n ],\n [\n -166.02212168061303,\n 63.49574914683663\n ],\n [\n -166.02212168061303,\n 59.74690004761109\n ],\n [\n -161.58644631128854,\n 59.74690004761109\n ],\n [\n -161.58644631128854,\n 63.49574914683663\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abbe4b07f02db672bbe","contributors":{"authors":[{"text":"Nelson, C. Hans","contributorId":34909,"corporation":false,"usgs":true,"family":"Nelson","given":"C.","email":"","middleInitial":"Hans","affiliations":[],"preferred":false,"id":191212,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":17489,"text":"ofr80435 - 1980 - Planning and design of studies for river-quality assessment in the Truckee and Carson River basins, California and Nevada","interactions":[],"lastModifiedDate":"2019-06-28T15:39:31","indexId":"ofr80435","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-435","title":"Planning and design of studies for river-quality assessment in the Truckee and Carson River basins, California and Nevada","docAbstract":"The objectives of the Geological Survey 's river-quality assessment in the Truckee and Carson River basins in California and Nevada are to identify the significant resource management problems; to develop techniques to assess the problems; and to effectively communicate results to responsible managers. Six major elements of the assessment to be completed by October 1981 are (1) a detailing of the legal, institutional, and structural development of water resources in the basins and the current problems and conflicts; (2) a compilation and synthesis of the physical hydrology of the basins; (3) development of a special workshop approach to involve local management in the direction and results of the study; (4) development of a comprehensive streamflow model emcompassing both basins to provide a quantitative hydrologic framework for water-quality analysis; (5) development of a water-quality transport model for selected constituents and characteristics on selected reaches of the Truckee River; and (6) a detailed examination of selected fish habitats for specified reaches of the Truckee River. Progress will be periodically reported in reports, maps, computer data files, mathematical models, a bibliography, and public presentations. In building a basic framework to develop techniques, the basins were viewed as a single hydrologic unit because of interconnecting diversion structures. The framework comprises 13 hydrographic subunits to facilitate modeling and sampling. Several significant issues beyond the scope of the assessment were considered as supplementary proposals; water-quality loadings in Truckee and Carson Rivers, urban runoff in Reno and management alternatives, and a model of limnological processes in Lahontan Reservoir. (USGS)","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr80435","usgsCitation":"Nowlin, J.O., Brown, W., Smith, L.H., and Hoffman, R., 1980, Planning and design of studies for river-quality assessment in the Truckee and Carson River basins, California and Nevada: U.S. Geological Survey Open-File Report 80-435, vii, 81 p. , https://doi.org/10.3133/ofr80435.","productDescription":"vii, 81 p. 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\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad6e4b07f02db683fe2","contributors":{"authors":[{"text":"Nowlin, Jon O.","contributorId":34937,"corporation":false,"usgs":true,"family":"Nowlin","given":"Jon","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":176573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brown, W. M.","contributorId":106138,"corporation":false,"usgs":true,"family":"Brown","given":"W. M.","affiliations":[],"preferred":false,"id":176576,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, L. H.","contributorId":59447,"corporation":false,"usgs":true,"family":"Smith","given":"L.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":176575,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hoffman, R.J.","contributorId":38582,"corporation":false,"usgs":true,"family":"Hoffman","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":176574,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":24155,"text":"ofr80840 - 1980 - An earthquake catalog and velocity model for the USGS Peter the First Range seismic array, Tadjikistan USSR","interactions":[],"lastModifiedDate":"2012-02-02T00:08:07","indexId":"ofr80840","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-840","title":"An earthquake catalog and velocity model for the USGS Peter the First Range seismic array, Tadjikistan USSR","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80840","issn":"0094-9140","usgsCitation":"Pelton, J., and Fischer, F., 1980, An earthquake catalog and velocity model for the USGS Peter the First Range seismic array, Tadjikistan USSR: U.S. Geological Survey Open-File Report 80-840, 28 p. ill., map ;28 cm., https://doi.org/10.3133/ofr80840.","productDescription":"28 p. ill., map ;28 cm.","costCenters":[],"links":[{"id":156525,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad9e4b07f02db684c09","contributors":{"authors":[{"text":"Pelton, Jack","contributorId":81521,"corporation":false,"usgs":true,"family":"Pelton","given":"Jack","email":"","affiliations":[],"preferred":false,"id":191415,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fischer, Fred","contributorId":75964,"corporation":false,"usgs":true,"family":"Fischer","given":"Fred","email":"","affiliations":[],"preferred":false,"id":191414,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":24165,"text":"ofr80992 - 1980 - Preliminary observations of noise spectra at the SRO and ASRO stations","interactions":[],"lastModifiedDate":"2018-07-17T10:44:45","indexId":"ofr80992","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-992","title":"Preliminary observations of noise spectra at the SRO and ASRO stations","docAbstract":"

The seismic noise spectra presented in this report were derived from SRO and ASRO station data for the purpose of evaluating the performance of the seismic instruments. They are also useful for constructing a spectral estimate of earth noise at a quiet site based on noise samples obtained from a network of globally distributed sites. It is hoped that the spectra will be usefull for other purposes as well.

The term 'noise' is used here to describe the ambient signals recorded during a quiet period when earthquake signals have not been detected by visual inspectino of the analog seismogram. The total recorded noise is the sum of instrumental noise, environmental noise (such as effects of temperature, pressure, wind), earth background noise from both natural and cultural sources, and very possibly low-level signals from earthquakes that cannot be visually identified. It is not possible to separate and quantify the signals generated by these independent noise sources using a single sample of station data, although instrumental problems may be indicated by gross changes of noise levels, if the changes are not in the microseismic bands. Since seismic data at the SRO and ASRO stations are recorded in a digital format, spectral computations can be automated so that station noise levels can be monitored as part of data-review procedures. The noise spectra presented in this study are intended to serve as an initial baseline against which relative changes in noise levels can be measured.

Total noise power was computed separately for the short- and long-period bands, which are recorded separately at the stations. Power spectral densities were derived by averaging the spectral estimates of a number of contiguous dat segments. The mean value and slope were removed from each segment, cosine-tapered windows were applied, and the estimates were obtained using a fast Fourier transform. In the short-period analyses 16 segments were used, each segment being 1024 samples in length. Because the sampling interval is .05 seconds, the total record length is nearly 13.7 minutes. Normally, the short-period SRO and ASRO data are recorded in an event-only mode. However, several days of continuous short-period data were acquired from most stations for the purpose of this study. Where there was appreciable diurnal variation in short-period noise, spectral data were computed for both day and night intervals. In most cases the long-period spectral densities were obtained by averagin the estimates from 16 data segments, each segment having a length of 2048 samples. Since the long-period sampling interval in 1 second, the total record length used was nearly 9.1 hours. In a few instances, a smaller number of segments was averaged. Spectral data were computed from the vertical-component short-period signals and all three components of long-period signals. All of the spectral plots have been corrected for known instrument response and presented in units of earth displacement.

With a few exceptions, the samples of noise data used were acquired during the early months of 1980, winter at some of the stations and summer at others. The starting times for the intervals analyzed are listed in Table 1. A seasonal variation of noise levels in microseismic bands is to be expected. However, none of the stations were experiencing a noticeably high level of microseisms during the intervals analyzed. Weltman and others (1979) have studied and reported daily and seasonal RMS (root-mean-square) noise trends at the SRO and ASRO stations.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr80992","issn":"0094-9140","usgsCitation":"Peterson, J., 1980, Preliminary observations of noise spectra at the SRO and ASRO stations: U.S. Geological Survey Open-File Report 80-992, 26 p., https://doi.org/10.3133/ofr80992.","productDescription":"26 p.","costCenters":[{"id":122,"text":"Albuquerque Seismological Laboratory","active":false,"usgs":true}],"links":[{"id":155745,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0992/coverthb.jpg"},{"id":9704,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0992/ofr80-992.pdf","text":"Report","size":"1.0 MB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 1980-0992"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acce4b07f02db67e482","contributors":{"authors":[{"text":"Peterson, Jon","contributorId":67522,"corporation":false,"usgs":true,"family":"Peterson","given":"Jon","affiliations":[],"preferred":false,"id":191430,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24297,"text":"ofr80446 - 1980 - Digital-computer model of ground-water flow in Tooele Valley, Utah","interactions":[],"lastModifiedDate":"2017-09-02T14:02:18","indexId":"ofr80446","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-446","title":"Digital-computer model of ground-water flow in Tooele Valley, Utah","docAbstract":"

A two-dimensional, finite-difference digital-computer model was used to simulate the ground-water flow in the principal artesian aquifer in Tooele Valley, Utah. The parameters used in the model were obtained through field measurements and tests, from historical records, and by trial-and-error adjustments. The model was calibrated against observed water-level changes that occurred during 1941-50, 1951-60, 1961-66, 1967-73, and 1974-78. The reliability of the predictions is good in most parts of the valley, as is shown by the ability of the model to match historical water-level changes.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Salt Lake City, Utah","doi":"10.3133/ofr80446","issn":"0094-9140","collaboration":"Prepared in cooperation with the Utah Department of Natural Resources, Division of Water Rights","usgsCitation":"Razem, A.C., and Bartholoma, S.D., 1980, Digital-computer model of ground-water flow in Tooele Valley, Utah: U.S. Geological Survey Open-File Report 80-446, iv, 55 p., https://doi.org/10.3133/ofr80446.","productDescription":"iv, 55 p.","numberOfPages":"58","costCenters":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"links":[{"id":155065,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0446/report-thumb.jpg"},{"id":53413,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0446/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Utah","otherGeospatial":"Tooele Valley","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64ae83","contributors":{"authors":[{"text":"Razem, Allan C.","contributorId":72390,"corporation":false,"usgs":true,"family":"Razem","given":"Allan","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":191649,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bartholoma, Scott D.","contributorId":39408,"corporation":false,"usgs":true,"family":"Bartholoma","given":"Scott","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":191648,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":2003,"text":"wsp2064 - 1980 - Relationships between basic soils-engineering equations and basic ground-water flow equations","interactions":[],"lastModifiedDate":"2012-02-02T00:05:22","indexId":"wsp2064","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2064","title":"Relationships between basic soils-engineering equations and basic ground-water flow equations","docAbstract":"The many varied though related terms developed by ground-water hydrologists and by soils engineers are useful to each discipline, but their differences in terminology hinder the use of related information in interdisciplinary studies. Equations for the Terzaghi theory of consolidation and equations for ground-water flow are identical under specific conditions. A combination of the two sets of equations relates porosity to void ratio and relates the modulus of elasticity to the coefficient of compressibility, coefficient of volume compressibility, compression index, coefficient of consolidation, specific storage, and ultimate compaction. Also, transient ground-water flow is related to coefficient of consolidation, rate of soil compaction, and hydraulic conductivity. Examples show that soils-engineering data and concepts are useful to solution of problems in ground-water hydrology.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, Geological Survey ;\r\nFor sale by Supt. of Docs., U.S. Govt. Print. Off.,","doi":"10.3133/wsp2064","usgsCitation":"Jorgensen, D.G., 1980, Relationships between basic soils-engineering equations and basic ground-water flow equations: U.S. Geological Survey Water Supply Paper 2064, vi, 40 p. :ill. ;23 cm., https://doi.org/10.3133/wsp2064.","productDescription":"vi, 40 p. :ill. ;23 cm.","costCenters":[],"links":[{"id":138385,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/2064/report-thumb.jpg"},{"id":27447,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/2064/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a5fe4b07f02db6346b3","contributors":{"authors":[{"text":"Jorgensen, Donald G.","contributorId":19537,"corporation":false,"usgs":true,"family":"Jorgensen","given":"Donald","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":144511,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24507,"text":"ofr80503 - 1980 - Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography","interactions":[],"lastModifiedDate":"2013-08-01T12:54:36","indexId":"ofr80503","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-503","title":"Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography","docAbstract":"A finite-difference digital model was developed to simulate the effects of a proposed well field on the water levels in existing wells in the Salt River Indian Reservation, which is in the southeastern part of Paradise Valley in central Arizona. The model area includes about 600 square miles in Paradise Valley and the adjoining Salt River Valley. In 1975 about 37,500 acre-feet of ground water was withdrawn for irrigation in the Salt River Indian Reservation. The proposed well field would withdraw as much as 45,000 acre-feet per year of additional irrigation water north of the Arizona Canal. The model was calibrated by using measured water-level declines for 1923-76 and simulated declines for 1946-75. The calibrated model was then used to predict water-level declines, based on projected amounts of pumpage, after 20 years of pumping. The rate of water-level decline would be an additional 2 to 6 feet per year in existing wells after 20 years of pumping in the proposed well field. The model was more sensitive to changes in pumpage distribution and in pumpage and recharge amounts than to changes in transmissivity and specific yield. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey],","doi":"10.3133/ofr80503","issn":"0094-9140","usgsCitation":"Senftle, F.E., 1980, Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography: U.S. Geological Survey Open-File Report 80-503, 44 p. ; 28 cm., https://doi.org/10.3133/ofr80503.","productDescription":"44 p. ; 28 cm.","costCenters":[],"links":[{"id":156761,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0503/report-thumb.jpg"},{"id":275698,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0503/report.pdf"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a07e4b07f02db5f96d3","contributors":{"authors":[{"text":"Senftle, Frank E.","contributorId":49401,"corporation":false,"usgs":true,"family":"Senftle","given":"Frank","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":192049,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24525,"text":"ofr80403 - 1980 - Hydrologic setting of Williams Lake, Hubbard County, Minnesota","interactions":[],"lastModifiedDate":"2022-09-15T18:12:26.459915","indexId":"ofr80403","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-403","title":"Hydrologic setting of Williams Lake, Hubbard County, Minnesota","docAbstract":"

The hydrology and geology of Williams Lake watershed was studied to evaluate the accuracy of various methods used to determine precipitation and evaporation in lake water-balance studies and to define a lake and ground-water system according to approaches suggested by theoretical modeling studies. Regression analysis between estimated and measured precipitation at the lake showed that the accuracy of regionalization techniques is dependent on the closeness of the data network to the lake. For individual storms, the average-value method was found to be better than either the weighted average or isohyetal methods of determining precipitation, but it was least accurate in estimating 14-day average precipitation. The amount of evaporation calculated by the mass-transfer method ranged from 2 to 7 inches per month from July to October 1978, depending on the method used to determine the mass-transfer coefficient. Test drilling indicated that 30 to 150 feet of sand and gravel overlies till in the Williams Lake watershed. A sand lens about 50 feet thick occurs within the till.

\n

The configuration of the water table and vertical-head gradients measured from July to December 1978 indicate that ground water moves into the lake from the south and east and moves from the lake into the ground-water reservoir to the west. Preliminary numerical models indicate that the sand lens within the till is effectively isolated from the flow system interacting with the lake and that both inseepage and outseepage were about 1.4 inches from mid-July to mid-October 1978. When estimated as a residual in a water balance, ground water showed a net outseepage only of 1.47 inches.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"St. Paul, MN","doi":"10.3133/ofr80403","collaboration":"Prepared in cooperation with Minnesota Department of Natural* Resources Division of Waters","usgsCitation":"Siegel, D., and Winter, T.C., 1980, Hydrologic setting of Williams Lake, Hubbard County, Minnesota: U.S. Geological Survey Open-File Report 80-403, vii, 56 p., https://doi.org/10.3133/ofr80403.","productDescription":"vii, 56 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"links":[{"id":53576,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0403/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":406774,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_25793.htm"},{"id":156479,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0403/report-thumb.jpg"}],"country":"United States","state":"Minnesota","county":"Hubbard County","otherGeospatial":"Williams Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -94.67845916748047,\n 46.948152929705195\n ],\n [\n -94.66163635253906,\n 46.948152929705195\n ],\n [\n -94.66163635253906,\n 46.959870280492964\n ],\n [\n -94.67845916748047,\n 46.959870280492964\n ],\n [\n -94.67845916748047,\n 46.948152929705195\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db60547b","contributors":{"authors":[{"text":"Siegel, Donald I.","contributorId":97499,"corporation":false,"usgs":true,"family":"Siegel","given":"Donald I.","affiliations":[],"preferred":false,"id":192082,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Winter, Thomas C.","contributorId":84736,"corporation":false,"usgs":true,"family":"Winter","given":"Thomas","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":192081,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":24534,"text":"ofr80680 - 1980 - Hydrology of the Chicod Creek basin, North Carolina, prior to channel improvements","interactions":[],"lastModifiedDate":"2016-12-14T11:49:47","indexId":"ofr80680","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-680","title":"Hydrology of the Chicod Creek basin, North Carolina, prior to channel improvements","docAbstract":"Extensive modification and excavation of stream channels in the 6-square mile Chicod Creek basin began in mid-1979 to reduce flooding and improve stream runoff conditions. The effects of channel improvements on this Coastal Pain basin 's hydrology will be determined from data collected prior to, during, and for several years following channel alternations. This report summarizes the findings of data collected prior to these improvements. During the 3-year study period, flow data collected from four stream gaging stations in the basin show that streams are dry approximately 10 percent of the time. Chemical analyses of water samples from the streams and from eight shallow groundwater observation wells indicate that water discharge from the surficial aquifer is the primary source of streamflow during rainless periods. Concentrations of Kjeldahl nitrogen, total nitrogen, and total phosphorus were often 5 to 10 times greater at Chicod Creek sites than those at nearby baseline sites. It is probable that runoff from farming and livestock operations contributes significantly to these elevated concentrations in Chicod Creek. The only pesticides detected in stream water were low levels of DDT and dieldrin, which occurred during storm runoff. A much wider range of pesticides, however, are found associated with streambed materials. The ratio of fecal coliform counts to those of fecal streptococcus indicate that the streams receive fecal wastes from livestock and poultry operations.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80680","issn":"0094-9140","usgsCitation":"Simmons, C.E., and Aldridge, M.C., 1980, Hydrology of the Chicod Creek basin, North Carolina, prior to channel improvements: U.S. Geological Survey Open-File Report 80-680, v, 32 p. ill., maps ;28 cm., https://doi.org/10.3133/ofr80680.","productDescription":"v, 32 p. ill., maps ;28 cm.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":275930,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0680/report.pdf"},{"id":155544,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0680/report-thumb.jpg"}],"country":"United States","state":"North Carolina","otherGeospatial":"Chicod Creek basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.37876892089844,\n 35.45283961767315\n ],\n [\n -77.37876892089844,\n 35.67570522138987\n ],\n [\n -77.069091796875,\n 35.67570522138987\n ],\n [\n -77.069091796875,\n 35.45283961767315\n ],\n [\n -77.37876892089844,\n 35.45283961767315\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a13e4b07f02db601f65","contributors":{"authors":[{"text":"Simmons, Clyde E.","contributorId":71528,"corporation":false,"usgs":true,"family":"Simmons","given":"Clyde","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":192099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aldridge, Mary C.","contributorId":7734,"corporation":false,"usgs":true,"family":"Aldridge","given":"Mary","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":192098,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":10313,"text":"ofr81386 - 1980 - Water-level monitoring along San Andreas and San Jacinto faults, southern California, during fiscal year 1980","interactions":[],"lastModifiedDate":"2022-08-09T15:26:34.56685","indexId":"ofr81386","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"81-386","title":"Water-level monitoring along San Andreas and San Jacinto faults, southern California, during fiscal year 1980","docAbstract":"

Beginning in October 1976, a program of water-level monitoring of abandoned water wells was initiated in the Palmdale area with the purpose of identifying possible water-level changes premonitory to a major earthquake on the San Andreas fault. In October 1977, the program was extended southeastward along the rift zone to the Valyermo area. In November 1977, the monitoring of water wells along the San Jacinto fault was initiated with the expectation of experiencing a moderate size earthquake while monitoring was in progress. Currently over thirty wells are being monitored. Eleven wells are monitored continuously with Stevens Type F recorders, two of which have been modified to operate with the Caltech Remote Observatory Support Systems (TIMS). The remaining wells are probed weekly, or in some cases semi-weekly or daily, by volunteers. We are endeavoring to improve the volunteer program by increasing the frequency of measurements and simplifying the procedure to minimize measurement errors. Weekly water-level data are displayed on computer-generated hydrographs for each well. Rainfall and earthquakes are plotted on the graphs for direct comparison with water levels. The hydrographs are updated and reviewed weekly. Weekly hydrographs are also prepared from recorder charts on two wells maintained by W. R. Moyle, Jr., of the U.S. Geological Survey, Water Resources Division Office, Laguna Niguel, California. A M5.5 earthquake occurred on 25 February 1980, between the Buck Ridge and San Jacinto strands of the San Jacinto fault zone, about 8 miles east-southeast of Anza. This is the largest earthquake which has occurred on the faults within our monitoring network. The Stevens recorder chart for well number 11S/6E-3N4 located in Borrego Valley about 20 miles southeast of the epicenter indicates that, during a period of about four hours on 21 February, the water level rose 1.5 to 1.6 feet and returned to its prior level. This is one of the most remarkable short-term water-level fluctuations observed during our monitoring program; it occurred about 88 hours prior to the earthquake. This well has been monitored since October 1977 and has had a Stevens recorder since October 1978. Long-term water levels have been remarkably steady compared to those in other wells we are monitoring. This well shows a strong response to earth tides. The Stevens record on a second well in Borrego Valley (11S/6E-1C1) showed a much smaller (0.1 foot) spike in water level at the same time as the spike in well number 11S/6E-3N4. Other continuously recording wells in Anza and Ocotillo Wells showed no identifiable water-level anomalies. The two wells in Borrego Valley which showed possible strain-induced water-level spikes appear to be more sensitive to earth tides than wells in the same area which did not show spikes in water level. We cannot conceive of any nontectonic cause for the spike on the Stevens record of well 11S/6E3N4. A creep event on the Coyote Creek fault about four miles from the well is one possibility. Because the spikes in the two wells in Borrego Valley are unique for the long-term record of these wells, they may represent precursors to the 25 February earthquake. Local seismic activity was also recorded in water levels of the two wells in Borrego Springs with continuous water-level recorders. One well showed peculiar high frequency water-level fluctuations from 22 July to 21 August 1980; since then the record has appeared normal. Several wells in the Palmdale-Valyermo area have shown peculiar changes in water level within the past year or so. The long-term hydrograph of well number 5N/12W-4H1 shows the most unusual behavior. The well showed no response to the 1977 and very heavy 1978 rainstorms, yet began to rise in early 1979 and continued to rise through the dry season of 1979. By comparison, most wells show a more normal seasonal response to rainfall. Eight wells in the Palmdale-Valyermo area have shown water-level changes which are different than would have been predicted from the previous history of water-level changes and seasonal rainfall. A longer period of observation is required to determine whether the changes are anomalous. Changes in the strain pattern and other geophysical phenomena have also been observed in southern California during about the same period as the water-level changes. If the water-level changes are the result of tectonic strain, the mechanism and significance are unknown. However, it is interesting that five of the eight wells with possibly anomalous water-level changes have been identified as good strain meters based on their response to earth tides. Six wells showing an unexpected rise in water level are located west of the earthquake swarm which occurred in 1976-1977 (McNally et al, 1978), whereas the two which show water levels lower than would have been predicted are located east of the earthquake swarm.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr81386","usgsCitation":"Merifield, P., and Lamar, D., 1980, Water-level monitoring along San Andreas and San Jacinto faults, southern California, during fiscal year 1980: U.S. Geological Survey Open-File Report 81-386, x, 77 p., https://doi.org/10.3133/ofr81386.","productDescription":"x, 77 p.","costCenters":[],"links":[{"id":405009,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/0386/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":144264,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/0386/report-thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"southern California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.1572265625,\n 32.54681317351514\n ],\n [\n -114.3017578125,\n 32.54681317351514\n ],\n [\n -114.3017578125,\n 35.782170703266075\n ],\n [\n -121.1572265625,\n 35.782170703266075\n ],\n [\n -121.1572265625,\n 32.54681317351514\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ae4b07f02db5fb79d","contributors":{"authors":[{"text":"Merifield, P.M.","contributorId":69557,"corporation":false,"usgs":true,"family":"Merifield","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":161183,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lamar, D.L.","contributorId":53801,"corporation":false,"usgs":true,"family":"Lamar","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":161182,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":10309,"text":"ofr80407 - 1980 - Finite-difference model to simulate the areal flow of saltwater and fresh water separated by an interface","interactions":[],"lastModifiedDate":"2012-02-02T00:06:29","indexId":"ofr80407","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-407","title":"Finite-difference model to simulate the areal flow of saltwater and fresh water separated by an interface","docAbstract":"Model documentation is presented for a two-dimensional (areal) model capable of simulating ground-water flow of salt water and fresh water separated by an interface. The partial differential equations are integrated over the thicknesses of fresh water and salt water resulting in two equations describing the flow characteristics in the areal domain. These equations are approximated using finite-difference techniques and the resulting algebraic equations are solved for the dependent variables, fresh water head and salt water head. An iterative solution method was found to be most appropriate. The program is designed to simulate time-dependent problems such as those associated with the development of coastal aquifers, and can treat water-table conditions or confined conditions with steady-state leakage of fresh water. The program will generally be most applicable to the analysis of regional aquifer problems in which the zone between salt water and fresh water can be considered a surface (sharp interface). Example problems and a listing of the computer code are included. (USGS).","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80407","usgsCitation":"Mercer, J.W., Larson, S.P., and Faust, C.R., 1980, Finite-difference model to simulate the areal flow of saltwater and fresh water separated by an interface: U.S. Geological Survey Open-File Report 80-407, 93 p. ill. ;28 cm., https://doi.org/10.3133/ofr80407.","productDescription":"93 p. ill. ;28 cm.","costCenters":[],"links":[{"id":144244,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0407/report-thumb.jpg"},{"id":38167,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0407/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db696b99","contributors":{"authors":[{"text":"Mercer, James W.","contributorId":85968,"corporation":false,"usgs":true,"family":"Mercer","given":"James","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":161176,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Larson, S. P.","contributorId":34903,"corporation":false,"usgs":true,"family":"Larson","given":"S.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":161175,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Faust, Charles R.","contributorId":89533,"corporation":false,"usgs":true,"family":"Faust","given":"Charles","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":161177,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1330,"text":"wsp2063 - 1980 - Channel and dynamic flow characteristics of the Chattahoochee River, Buford Dam to Georgia Highway 141","interactions":[],"lastModifiedDate":"2017-02-01T09:51:35","indexId":"wsp2063","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2063","title":"Channel and dynamic flow characteristics of the Chattahoochee River, Buford Dam to Georgia Highway 141","docAbstract":"Detailed flow and cross-section data for a 17-mile reach of the Chattahoochee River in northeast Georgia are described and summarized. Flow data include measurements of highly dynamic stage and discharge at five stations during the period March 21-23, 1976. Flow data were collected at 5-minute intervals and are listed accordingly. Coordinate data for 39 cross sections in the study reach are also listed. A mathematical model is developed and applied whereby stage data collected at a single station can be used to compute highly dynamic discharge at the station. The model is based on the continuity and momentum equations that describe unsteady, one-dimensional flow in open channels. Both equations are transformed to a single quadratic equation which describes mean flow velocity at a single station. Flow-geometry parameters used by the model are computed using cross-section coordinates and the equation which describes the area of an irregular polygon. Use of the model in conjunction with highly dynamic stage data collected on March 23, 1976, provided close agreement between measured and computed discharges. The model was also used to investigate the sensitivity of highly dynamic discharge to channel and flow parameters. Computed discharge was most sensitive to changes in channel roughness and slope.","language":"ENGLISH","publisher":"U.S. Govt. Print. Off.,","doi":"10.3133/wsp2063","usgsCitation":"Faye, R.E., and Cherry, R.N., 1980, Channel and dynamic flow characteristics of the Chattahoochee River, Buford Dam to Georgia Highway 141: U.S. Geological Survey Water Supply Paper 2063, 66 p. : ill., maps ; 24 cm., https://doi.org/10.3133/wsp2063.","productDescription":"66 p. : ill., maps ; 24 cm.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":26385,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/2063/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":137364,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/2063/report-thumb.jpg"}],"country":"United States","state":"Georgia","otherGeospatial":"Buford Dam, Chattahoochee River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -84.5343017578125,\n 32.99023555965106\n ],\n [\n -84.8089599609375,\n 32.8472886646638\n ],\n [\n -85.0177001953125,\n 32.81959486923976\n ],\n [\n -85.220947265625,\n 32.856518010109546\n ],\n [\n -85.3143310546875,\n 32.99945000822837\n ],\n [\n -85.3143310546875,\n 33.22030778968541\n ],\n [\n -84.9462890625,\n 33.6420625047537\n ],\n [\n -84.9517822265625,\n 33.970697997361626\n ],\n [\n -84.72656249999999,\n 34.17090836352573\n ],\n [\n -84.407958984375,\n 34.16636338473789\n ],\n [\n -84.166259765625,\n 34.37517887533528\n ],\n [\n -84.0618896484375,\n 34.52918706954935\n ],\n [\n -84.04541015625,\n 34.768691457552706\n ],\n [\n -83.82568359375,\n 34.88142481679756\n ],\n [\n -83.64990234375,\n 34.89494244739732\n ],\n [\n -83.3917236328125,\n 34.8183131456094\n ],\n [\n -83.34228515625,\n 34.56990638085636\n ],\n [\n -83.64990234375,\n 34.20271636159618\n ],\n [\n -83.95751953125,\n 33.897777013859475\n ],\n [\n -84.5452880859375,\n 33.38558626887102\n ],\n [\n -84.5343017578125,\n 32.99023555965106\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e47cd","contributors":{"authors":[{"text":"Faye, Robert E.","contributorId":92221,"corporation":false,"usgs":true,"family":"Faye","given":"Robert","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":143573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cherry, Rodney N.","contributorId":85941,"corporation":false,"usgs":true,"family":"Cherry","given":"Rodney","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":143572,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":12391,"text":"ofr80822 - 1980 - Modern chrysomonad cysts from Alta Morris Lake, El Dorado County, California","interactions":[],"lastModifiedDate":"2012-02-02T00:06:27","indexId":"ofr80822","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-822","title":"Modern chrysomonad cysts from Alta Morris Lake, El Dorado County, California","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr80822","usgsCitation":"Adam, D.P., and Mahood, A.D., 1980, Modern chrysomonad cysts from Alta Morris Lake, El Dorado County, California: U.S. Geological Survey Open-File Report 80-822, 17 p. ill., map ;28 cm., https://doi.org/10.3133/ofr80822.","productDescription":"17 p. ill., map ;28 cm.","costCenters":[],"links":[{"id":143302,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0822/report-thumb.jpg"},{"id":40626,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0822/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db69957b","contributors":{"authors":[{"text":"Adam, David P.","contributorId":36132,"corporation":false,"usgs":true,"family":"Adam","given":"David","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":166055,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mahood, Albert D.","contributorId":97493,"corporation":false,"usgs":true,"family":"Mahood","given":"Albert","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":166056,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":9419,"text":"ofr801023 - 1980 - Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico","interactions":[{"subject":{"id":9419,"text":"ofr801023 - 1980 - Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico","indexId":"ofr801023","publicationYear":"1980","noYear":false,"title":"Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico"},"predicate":"SUPERSEDED_BY","object":{"id":1817,"text":"wsp2205 - 1985 - Mathematical model of the Tesuque aquifer system near Pojoaque, New Mexico","indexId":"wsp2205","publicationYear":"1985","noYear":false,"title":"Mathematical model of the Tesuque aquifer system near Pojoaque, New Mexico"},"id":1}],"supersededBy":{"id":1817,"text":"wsp2205 - 1985 - Mathematical model of the Tesuque aquifer system near Pojoaque, New Mexico","indexId":"wsp2205","publicationYear":"1985","noYear":false,"title":"Mathematical model of the Tesuque aquifer system near Pojoaque, New Mexico"},"lastModifiedDate":"2022-04-26T22:39:03.500599","indexId":"ofr801023","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-1023","title":"Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico","docAbstract":"

A three-dimensional digital model of ground-water flow was constructed to represent the dipping anisotropic beds of the Tesuque aquifer system underlying the Pojoaque River basin and vicinity, New Mexico. Simulations of steady-state conditions and historical ground-water withdrawals were consistent with observed data. The model was used to simulate the response of the aquifer system to an irrigation development plan in the Pojoaque River basin. Storage is the main source of water as 34.05 cubic feet per second (86 percent of the withdrawal rate) was simulated to be withdrawn from storage after 50 years of withdrawals for irrigation development; the maximum simulated water-level decline was 334 feet; and net simulated streamflow capture from the Rio Grande, Santa Cruz, Pojoaque, and Santa Fe Rivers was 5.63 cubic feet per second (14 percent of the withdrawal rate). The sensitivity of the model was tested by varying aquifer characteristics to the limits of the plausible range. Change in hydraulic head in Pojoaque River basin is most sensitive to hydraulic conductivity. In all simulations, after 50 years of withdrawals, the maximum simulated decline in hydraulic head ranged between 210 and 474 feet, storage in the aquifer system was the source of 80 to 90 percent of the water withdrawn from wells, and streamflow capture from the Rio Grande and its tributaries plus irrigation diversions from the tributaries of the Pojoaque River simulated a decrease in the flow of the Rio Grande of between 17.13 and 21.11 cubic feet per second.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr801023","collaboration":"Prepared in cooperation with the U.S. Bureau of Indian Affairs","usgsCitation":"Hearne, G.A., 1980, Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico: U.S. Geological Survey Open-File Report 80-1023, xiv, 181 p., https://doi.org/10.3133/ofr801023.","productDescription":"xiv, 181 p.","costCenters":[],"links":[{"id":141821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/1023/report-thumb.jpg"},{"id":399718,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/1023/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"New Mexico","otherGeospatial":"Pojoaque River basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -106.09840393066406,\n 35.93354064249312\n ],\n [\n -106.06098175048828,\n 35.93354064249312\n ],\n [\n -106.06098175048828,\n 35.980228800645676\n ],\n [\n -106.09840393066406,\n 35.980228800645676\n ],\n [\n -106.09840393066406,\n 35.93354064249312\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a27e4b07f02db60ffd5","contributors":{"authors":[{"text":"Hearne, Glenn A.","contributorId":50882,"corporation":false,"usgs":true,"family":"Hearne","given":"Glenn","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":159655,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24845,"text":"ofr80564 - 1980 - Planning report for the southwest alluvial basins (east) regional aquifer-system analysis, parts of Colorado, New Mexico, and Texas","interactions":[],"lastModifiedDate":"2012-02-02T00:08:13","indexId":"ofr80564","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-564","title":"Planning report for the southwest alluvial basins (east) regional aquifer-system analysis, parts of Colorado, New Mexico, and Texas","docAbstract":"The study of the Southwest alluvial basins (east) will involve an analysis of the regional aquifer system in parts of Colorado, New Mexico, and Texas. This area has been divided into 22 basins. The study of the alluvial aquifer-system will be made in the following stages: (1) project planning, (2) literature searches, (3) compiling existing data, (4) data collection, (5) basin modeling, (6) regional aquifer modeling, and (7) reports. The regional aquifer study will be accomplished through studying each of the 22 basins. Data compilation and limited data collection will be part of each basin study. Digital computer models will be made for those basins where data are sufficient. A regional aquifer model will be developed from the basin models. In addition to this report, there will be basin hydrology reports and the final regional report. Included in the final report will be a description of the regional hydrology and geology. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey, Water Resources Division ;\r\nFor sale by Open-file Services Section, Branch of Distribution, U.S. Geological Survey,","doi":"10.3133/ofr80564","issn":"0094-9140","usgsCitation":"Wilkins, D.W., Scott, W.B., and Kaehler, C., 1980, Planning report for the southwest alluvial basins (east) regional aquifer-system analysis, parts of Colorado, New Mexico, and Texas: U.S. Geological Survey Open-File Report 80-564, iv, 43 p. ill. ;28 cm., https://doi.org/10.3133/ofr80564.","productDescription":"iv, 43 p. ill. ;28 cm.","costCenters":[],"links":[{"id":157126,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0564/report-thumb.jpg"},{"id":53845,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0564/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4adae4b07f02db68535f","contributors":{"authors":[{"text":"Wilkins, D. W.","contributorId":97471,"corporation":false,"usgs":true,"family":"Wilkins","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":192675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scott, W. B.","contributorId":87887,"corporation":false,"usgs":true,"family":"Scott","given":"W.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":192674,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kaehler, C. A.","contributorId":59469,"corporation":false,"usgs":true,"family":"Kaehler","given":"C. A.","affiliations":[],"preferred":false,"id":192673,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":9821,"text":"ofr801153 - 1980 - A homogeneous stochastic model for earthquake occurrences","interactions":[],"lastModifiedDate":"2022-08-26T22:07:34.790663","indexId":"ofr801153","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-1153","title":"A homogeneous stochastic model for earthquake occurrences","docAbstract":"

The objective of this study is to develop a probabilistic model for earthquake occurrences with temporal and spatial memory. Stochastic processes are used to characterize both the spatial and temporal dependencies of seismic occurrences along a fault. Currently, only homogeneous space and time transitions are considered. The resulting process however is evolutionary and depends on the specific sequence of events over a period of time. The model provides estimates on the cumulative activity of a fault over a future time period. In addition, probabilities of occurrences of individual events along a geologic fault at some specified future time are obtained when a descritized time scale is used. The information from these evaluations is particularly useful in engineering seismic hazard computations and for social and engineering seismic risk assessments.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr801153","usgsCitation":"Kiremidjian, A.S., and Anagnos, T., 1980, A homogeneous stochastic model for earthquake occurrences: U.S. Geological Survey Open-File Report 80-1153, v, 41 p., https://doi.org/10.3133/ofr801153.","productDescription":"v, 41 p.","costCenters":[],"links":[{"id":405729,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/1153/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":142791,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/1153/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae416","contributors":{"authors":[{"text":"Kiremidjian, Anne S.","contributorId":60649,"corporation":false,"usgs":true,"family":"Kiremidjian","given":"Anne","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":160359,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anagnos, Thalia","contributorId":66690,"corporation":false,"usgs":true,"family":"Anagnos","given":"Thalia","email":"","affiliations":[],"preferred":false,"id":160360,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":24887,"text":"ofr80569 - 1980 - Paleohydrology of the southern Great Basin, with special reference to water table fluctuations beneath the Nevada Test Site during the late(?) Pleistocene","interactions":[],"lastModifiedDate":"2012-02-02T00:08:20","indexId":"ofr80569","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-569","title":"Paleohydrology of the southern Great Basin, with special reference to water table fluctuations beneath the Nevada Test Site during the late(?) Pleistocene","docAbstract":"Knowledge of the magnitude of water-table rise during Pleistocene pluvial climates, and of the resultant shortening of groundwater flow path and reduction in unsaturated zone thickness, is mandatory for a technical evaluation of the Nevada Test Site (NTS) or other arid zone sites as repositories for high-level or transuranic radioactive wastes. The distribution of calcitic veins filling fractures in alluvium, and of tufa deposits between the Ash Meadows spring discharge area and the Nevada Test Site indicates that discharge from the regional Paleozoic carbonate aquifer during the Late( ) Pleistocene pluvial periods may have occurred at an altitude about 50 meters higher than at present and 14 kilometers northeast of Ash Meadows. Use of the underflow equation (relating discharge to transmissivity, aquifer width, and hydraulic gradient), and various assumptions regarding pluvial recharge, transmissivity, and altitude of groundwater base level, suggest possible rises in potentiometric level in the carbonate aquifer of about -90 meters beneath central Frenchman Flat. During Wisconsin time the rise probably did not exceed 30 meters. Water-level rises beneath Frenchman Flat during future pluvials are unlikely to exceed 30 meters and might even be 10 meters lower than modern levels. Neither the cited rise in potentiometric level in the regional carbonate aquifer, nor the shortened flow path during the Late( ) Pleistocene preclude utilization of the NTS as a repository for high-level or transuranic-element radioactive wastes provided other requisite conditions are met as this site. Deep water tables, attendant thick (up to several hundred meter) unsaturated zones, and long groundwater flow paths characterized the region during the Wisconsin Stage and probably throughout the Pleistocene Epoch and are likely to so characterize it during future glacial periods. (USGS)","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, Geological Survey ; Open-file Services Section, U.S. Geological Survey [distributor],","doi":"10.3133/ofr80569","issn":"0094-9140","usgsCitation":"Winograd, I.J., and Doty, G.C., 1980, Paleohydrology of the southern Great Basin, with special reference to water table fluctuations beneath the Nevada Test Site during the late(?) Pleistocene: U.S. Geological Survey Open-File Report 80-569, iv, 97 p. ill., maps ;28 cm., https://doi.org/10.3133/ofr80569.","productDescription":"iv, 97 p. ill., maps ;28 cm.","costCenters":[],"links":[{"id":157228,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0569/report-thumb.jpg"},{"id":53875,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0569/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db689d2c","contributors":{"authors":[{"text":"Winograd, Isaac Judah","contributorId":9233,"corporation":false,"usgs":true,"family":"Winograd","given":"Isaac","email":"","middleInitial":"Judah","affiliations":[],"preferred":false,"id":192744,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doty, Gene C.","contributorId":96272,"corporation":false,"usgs":true,"family":"Doty","given":"Gene","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":192745,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":11698,"text":"ofr791271 - 1980 - Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida","interactions":[{"subject":{"id":11698,"text":"ofr791271 - 1980 - Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida","indexId":"ofr791271","publicationYear":"1980","noYear":false,"title":"Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida"},"predicate":"SUPERSEDED_BY","object":{"id":38602,"text":"pp1217 - 1982 - Simulated effects of ground-water development on the potentiometric surface of the Floridan aquifer, west-central Florida","indexId":"pp1217","publicationYear":"1982","noYear":false,"title":"Simulated effects of ground-water development on the potentiometric surface of the Floridan aquifer, west-central Florida"},"id":1}],"supersededBy":{"id":38602,"text":"pp1217 - 1982 - Simulated effects of ground-water development on the potentiometric surface of the Floridan aquifer, west-central Florida","indexId":"pp1217","publicationYear":"1982","noYear":false,"title":"Simulated effects of ground-water development on the potentiometric surface of the Floridan aquifer, west-central Florida"},"lastModifiedDate":"2012-02-02T00:06:35","indexId":"ofr791271","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"79-1271","title":"Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida","docAbstract":"A digital model of two-dimensional ground-water flow was used to predict changes in the potentiometric surface of the Floridan aquifer, 1976-2000, in a 5,938-square-mile area of west-central Florida. In 1975, ground water withdrawn from the Floridan aquifer for irrigation, phosphate mines, other industries, and municipal supplies averaged about 649 million gallons per day. Rates are projected to increase to about 840 million gallons per day by 2000. The model was calibrated under steady-state and transient conditions. Input parameters included transmissivity and storage coefficient of the Floridan aquifer; thickness, vertical hydraulic conductivity, and storage coefficient of the upper confining bed; altitudes of the water table and potentiometric surface; and ground-water withdrawals. Simulation of May 1976 to May 2000, using projected combined pumping rates for municipal supplies, irrigation, and industry (including existing and proposed phosphate mines), resulted in a rise in the potentiometric surface of about 10 feet in Polk County, and a decline of about 35 feet in parts of Manatee and Hardee Counties. The lowest predicted potentiometric level was about 30 feet below sea level. Predicted declines for November 1976 to October 2000 were generally 5 to 10 feet less than those for May 1976 to May 2000. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr791271","usgsCitation":"Wilson, W.E., and Gerhart, J.M., 1980, Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida: U.S. Geological Survey Open-File Report 79-1271, 128 p. :ill., maps (2 fold. in pocket) ;28 cm., https://doi.org/10.3133/ofr791271.","productDescription":"128 p. :ill., maps (2 fold. in pocket) ;28 cm.","costCenters":[],"links":[{"id":145060,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1979/1271/report-thumb.jpg"},{"id":39579,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1979/1271/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":39580,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1979/1271/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":39581,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1979/1271/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f9e4b07f02db5f3922","contributors":{"authors":[{"text":"Wilson, William Edward","contributorId":82321,"corporation":false,"usgs":true,"family":"Wilson","given":"William","email":"","middleInitial":"Edward","affiliations":[],"preferred":false,"id":163587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gerhart, James M.","contributorId":35717,"corporation":false,"usgs":true,"family":"Gerhart","given":"James","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":163586,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":17976,"text":"ofr80208 - 1980 - Hydrology of Jumper Creek Canal basin, Sumter County, Florida","interactions":[],"lastModifiedDate":"2022-10-24T18:59:01.217381","indexId":"ofr80208","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-208","title":"Hydrology of Jumper Creek Canal basin, Sumter County, Florida","docAbstract":"

In 1960, floods caused extensive damage to agribusiness in Jumper Creek Canal basin. In 1962, a plan was developed for a proposed project to reduce the threat of floods. In 1976, a study of the hydrology of the basin was proposed to help evaluate this plan and to serve as a basis for its modification; the study was conducted from October 1976 through September 1977.

Jumper Creek Canal drains a basin of 83 square miles in which the average yearly rainfall is about 53 inches. Average runoff from the upper 40 square miles of the basin is estimated to be about 30 cubic feet per second or 10 inches per year. Evapotranspiration is estimated to be about 37 inches per year. Variation in runoff from Jumper Creek Canal is much less than that from most other basins in west-central Florida because of large storage capacity in the basin both on the surface and in the ground.

Limestone in Jumper Creek Canal basin is covered by a veneer of sand and clays which ranges in thickness from 0 to 10 feet. The study indicates that most of the base flow in the canal enters the canal east of the site of the proposed water-control structure number 5 and that the discharge in the canal at State Highway 475 has been about the same relative to rainfall in the basin since 1963 whether the base flow was derived entirely from natural inseepage or partly from mine pumpage.

The study shows that implementation of the proposed project will result in (1) a decrease in surface outflow, (2) an increase in subsurface outflow, (3) a rise in the potentiometric surface of the Floridan aquifer near the canal and (4) a tendency to increase evapotranspiration and the magnitude of floods in the basin.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr80208","collaboration":"Prepared in cooperation with the Sumter County Recreation and Water Conservation and Control Authority and the U.S. Department of Agriculture Soil Conservation Service","usgsCitation":"Anderson, W., 1980, Hydrology of Jumper Creek Canal basin, Sumter County, Florida: U.S. Geological Survey Open-File Report 80-208, v, 41 p., https://doi.org/10.3133/ofr80208.","productDescription":"v, 41 p.","costCenters":[],"links":[{"id":408664,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1980/0208/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":151018,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1980/0208/report-thumb.jpg"}],"country":"United States","state":"Florida","county":"Sumter County","otherGeospatial":"Jumper Creek Canal","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -82.333,\n 28.5\n ],\n [\n -81.917,\n 28.5\n ],\n [\n -81.917,\n 28.917\n ],\n [\n -82.333,\n 28.917\n ],\n [\n -82.333,\n 28.5\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acce4b07f02db67e83a","contributors":{"authors":[{"text":"Anderson, Warren","contributorId":7712,"corporation":false,"usgs":true,"family":"Anderson","given":"Warren","affiliations":[],"preferred":false,"id":178312,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":5881,"text":"pp1101 - 1980 - The Boulder Creek Batholith, Front Range, Colorado","interactions":[{"subject":{"id":14095,"text":"ofr6570 - 1965 - Allanites from the Boulder Creek batholith, Colorado","indexId":"ofr6570","publicationYear":"1965","noYear":false,"title":"Allanites from the Boulder Creek batholith, Colorado"},"predicate":"SUPERSEDED_BY","object":{"id":5881,"text":"pp1101 - 1980 - The Boulder Creek Batholith, Front Range, Colorado","indexId":"pp1101","publicationYear":"1980","noYear":false,"title":"The Boulder Creek Batholith, Front Range, Colorado"},"id":1}],"lastModifiedDate":"2012-02-02T00:05:48","indexId":"pp1101","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1101","title":"The Boulder Creek Batholith, Front Range, Colorado","docAbstract":"The Boulder Creek batholith is the best known of several large Precambrian batholiths of similar rock composition that crop out across central Colorado. The rocks in the batholith belong to the calc-alkaline series and range in composition from granodiorite through quartz diorite (tonalite) to gneissic aplite. Two rock types dominate': the Boulder Creek Granodiorite, the major rock unit, and a more leucocratic and slightly younger unit herein named Twin Spruce Quartz Monzonite. Besides mafic inclusions, which occur mainly in hornblende-bearing phases of the Boulder Creek Granodiorite, there are cogenetic older and younger lenses, dikes, and small plutons of hornblende diorite, hornblendite, gabbro, and pyroxenite. Pyroxenite is not found in the batholith. The Boulder Creek Granodiorite in the batholith represents essentially two contemporaneous magmas, a northern body occurring in the Gold Hill and Boulder quadrangles and a larger southern body exposed in the Blackhawk and the greater parts of the Tungsten and Eldorado Springs quadrangles. The two bodies are chemically and mineralogically distinct. The northern body is richer in CaO and poorer in K2O, is more mafic, and has a larger percentage of plagioclase than the southern body. \r\n\r\nA crude sequence of rock types occurs from west to east in the batholith accompanied by a change in plagioclase composition from calcic plagioclase on the west to sodic on the east. Ore minerals tend to decrease, and the ratio potassium feldspar:plagioclase increases inward from the western contact of the batholith, indicating that the Boulder Creek batholith is similar to granodiorite batholiths the world over. Emplacement of the Boulder Creek batholith was contemporaneous with plastic deformation and high-grade regional metamorphism that folded the country rock and the batholith contact along west-northwest and north-northwest axes. Also, smaller satellitic granodiorite bodies tend to conform to the trends of foliation and fold axes in the country rock, suggesting that emplacement was controlled by preexisting structures in the country rock. \r\n\r\nOn a gross scale, chemical equilibrium in the Boulder Creek Granodiorite is expressed by a near 1:1 ratio, or straight-line relationship in the distribution of iron, magnesium, and manganese in biotite and hornblende. General mineralogical trends in the Boulder Creek Granodiorite indicate that modal biotite, hornblende, and plagioclase tend to increase and quartz and microcline tend to decrease as CaO increases. These trends were not found in the Twin Spruce Quartz Monzonite. \r\n\r\nDifferentiation is believed to have played a major role and assimilation a minor role in the development of the Boulder Creek batholith. The Boulder Creek Granodiorite is of probable mantle or lower crust origin, and, based on the scant data available, the Twin Spruce Quartz Monzonite may be of crustal origin, but the magma was extensively altered by contaminants of ambiguous origin. Mafic inclusions, possibly derived from a dioritic magma which was an early differentiate associated temporally with the Boulder Creek Granodiorite and (or) the Twin Spruce Quartz Monzonite, were in jected into the Boulder Creek Granodiorite during the mush stage and before the batholith was completely crystallized. \r\n\r\nBiotite, hornblende, and potassium feldspar were studied extensively. Their chemistry and petrology indicate a homogeneity throughout the batholith not believed possible by a casual observance of the batholithic rocks in the field. The accessory minerals, where investigated, also tend to indicate this same pervasive homogeneity.","language":"ENGLISH","publisher":"U.S. Govt. Print. Off.,","doi":"10.3133/pp1101","usgsCitation":"Gable, D.J., 1980, The Boulder Creek Batholith, Front Range, Colorado: U.S. Geological Survey Professional Paper 1101, 88 p; 2 plates in pocket, https://doi.org/10.3133/pp1101.","productDescription":"88 p; 2 plates in pocket","costCenters":[],"links":[{"id":104551,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_4720.htm","linkFileType":{"id":5,"text":"html"},"description":"4720"},{"id":124378,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1101/report-thumb.jpg"},{"id":32702,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/pp/1101/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":32703,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/pp/1101/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":32704,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1101/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad3e4b07f02db68231b","contributors":{"authors":[{"text":"Gable, Dolores J.","contributorId":52957,"corporation":false,"usgs":true,"family":"Gable","given":"Dolores","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":151739,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":11562,"text":"ofr80186 - 1980 - Seismic refraction data for shots recorded in the Coso Range, California, October 1976","interactions":[],"lastModifiedDate":"2022-10-24T19:10:14.089586","indexId":"ofr80186","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1980","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"80-186","title":"Seismic refraction data for shots recorded in the Coso Range, California, October 1976","docAbstract":"
The Coso Range lies in the southwest corner of the Basin and Range province, east of the Sierra Nevada and north of the Garlock Fault. The range, circular in form, is covered by a thin sequence of late-cenozoic volcanics which overlie highly fractured crystalline basement, similar in composition to the nearby Sierra Nevada (Duffield et al., 1980). Thirty-eight rhyolite domes of Pleistocene age were emplaced near the center of the range and are aligned approximately parallel to the direction of Basin and Range faulting (Figure 1). Bacon et al. (1980), using both age-dates and chemical analyses, inferred that the domes originated from a magma source beneath the central and largest of the rhyolite domes, Sugarloaf Mountain (Figure 1). A shallow source was inferred because active fumeroles, hydrothermally altered zones, and high heat flow values (Combs, 1980) are presently observed in this vicinity.

In an effort to collect seismic data which could be used to identify a magma body beneath Sugarloaf Mountain, a 16 station seismograph array was operated in the Coso Range from September 1975 through September 1977. During the two years of network operation, over 4000 local earthquakes were located in the vicinity of the Coso Range (Walter and Weaver, 1980a, 1980b). In October of 1976, a seismic refraction experiment was conducted in the Coso Range in order to develop a crustal velocity model for use in interpreting the earthquake data.
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