Limnology of Lago Loiza, Puerto Rico
Ferdinand Quinones-Marquez
1980, Water-Resources Investigations Report 79-97
The principal chemical, physical and biological characteristics of Lago Loize, P.R., and its main tributaries were studied from 1973-74. The lake supplies an average of 300,000 cubic meters per day of water to metropolitan San Juan. Flows from Rio Grande de Loize and Rio Gurabo contribute 84.0 percent of the...
Development of a digital model of ground-water flow in deeply weathered crystalline rock, Chester County, Pennsylvania
Laurence J. McGreevy, Ronald A. Sloto
1980, Water-Resources Investigations Report 80-2
The model developed in this study simulates .recharge to, flow through, and discharge from the water-table aquifer in the upper Pickering Creek basin, a 5.98-square-mile basin representative of most of Chester County, Pennsylvania. The two-dimensional finite-difference model of Trescott, Pinder, and Larson was used with slight modification. The way ground-water...
Selected chemical quality characteristics in streams of Kentucky, 1970-1975
J.F. Santos
1980, Water-Resources Investigations Report 79-21
Generalized maps of average dissolved solids, hardness and nitrate concentrations of water in streams throughout Kentucky were prepared from data collected at more than 100 sites from 1970 to 1975. Average dissolved solids concentrations seldom exceed 250 milligrams per liter. Hardness, mostly of calcium magnesium origin, generally ranges from 60...
Nutrient yield of the Apalachicola River flood plain, Florida; water-quality assessment plan
H. C. Mattraw Jr., John F. Elder
1980, Water-Resources Investigations Report 80-51
The Apalachicola River in northwestern Florida is the location of one of four current U.S. Geological Survey National River Quality Assessments. The investigation of the Apalachicola River and flood plain is designed to quantify the organic detritus and nutrient yield to the productive, estuarine Apalachicola Bay. The extensive riverine flood...
Saline water at the base of the glacial-outwash aquifer near Vincennes, Knox County, Indiana
Robert J. Shedlock
1980, Water-Resources Investigations Report 80-65
A plume of saline water at the base of the glacial outwash aquifer near Vincennes, Indiana, has been drawn into the municipal well field. However, the average chloride concentration of the municipal water, 30 + or - 5 milligrams per liter, did not change significantly from 1976 to 1979. The...
Effects of strip mining the abandoned deep Anna S Mine on the hydrology of Babb Creek, Tioga County, Pennsylvania
Lloyd A. Reed
1980, Water-Resources Investigations Report 80-53
Daylighting (strip mining of coal seams previously deep mined) operations are being conducted on the Anna S Mine, that underlies about 850 acres that are drained by three major discharges. The Hunter Drift drains an underground area of about 400 acres, the Anna S 1 main entry, an area of...
Hydrologic setting of wetlands in the Cottonwood Lake area, Stutsman County, North Dakota
Thomas C. Winter, Mark R. Carr
1980, Water-Resources Investigations Report 80-99
Because of growing interest in the role of lakes and wetlands in the hydrology of the prairie environment, a group of wetlands in the Cottonwood Lake area, Stutsman County, are being instrumented for long-term hydrologic studies. The study site is on a regional topographic high near the eastern edge of...
Quality of urban runoff, Tecolote Creek drainage area, San Diego County, California
James G. Setmire, Wesley L. Bradford
1980, Water-Resources Investigations Report 80-70
The quality of storm runoff from a 9.2-square-mile urbanized watershed, Tecolote Creek, San Diego County, Calif., was studied during nine storms from September 1976 through May 1977. Specific conductance reached 2,100 micromhos and total residue concentrations reached 2,770 milligrams per liter. The chemical oxygen demand concentration in 95% of the...
A comparison of analog and digital modeling techniques for simulating three-dimensional ground-water flow on Long Island, New York
Thomas E. Reilly, Arlen W. Harbaugh
1980, Water-Resources Investigations Report 80-14
A three-dimensional electric-analog model of the Long Island, NY , groundwater system constructed by the U.S. Geological Survey in the early 1970 's was used as the basis for developing a digital, three-dimensional finite-difference model. The digital model was needed to provide faster modifications and more rapid solutions to water-management...
Ground water in the Piedmont Upland of central Maryland
Claire A. Richardson
1980, Water-Resources Investigations Report 80-18
Aquifers in a 130-square-mile area of the central Maryland and Piedmont, are shown to be the sole or principal source of water. The study area is underlain chiefly by crystalline rocks and partly by unaltered sandstones and siltstones. The groundwater is derived from local precipitation and generally occurs under water-table...
Model evaluation of the hydrogeology of the Morris Bridge well field and vicinity in West-Central Florida
Paul D. Ryder, Dale M. Johnson, James M. Gerhart
1980, Water-Resources Investigations Report 80-29
The Morris Bridge well field in west-central Florida, which is being developed may have a maximum well-field withdrawal of 40 million gallons per day. The water will be pumped from the Floridan aquifer--a sequence of carbonate rocks about 1,100 feet thick underlying surficial sand and clay deposits. A highly fractured...
Effects of storm runoff on water quality in the Mill Creek drainage basin, Willingboro, New Jersey
James C. Schornick Jr., David K. Fishel
1980, Water-Resources Investigations Report 80-98
The effect of storm runoff on the quality of water in the the Mill Creek drainage basin in west-central New Jersey is described in this report. The study area (23.7 square kilometers) consists of agricultural and undeveloped land and the residential community of Willingboro. From October 1975 to September 1976,...
Flood of August 31-September 1, 1978, in Crosswicks Creek basin and vicinity, central New Jersey
Arthur A. Vickers
1980, Water-Resources Investigations Report 80-115
A thunderstorm during the evening of August 31, 1978, caused flooding in a small area of south central New Jersey. Maximum peaks of record occurred on the upper Crosswicks Creek basin in the vicinity of Fort Dix, Wrightstown, and New Egypt. At New Egypt, high water crest elevations for Crosswicks...
Impact of reservoir-development alternatives on streamflow quantity in the Yampa River Basin, Colorado and Wyoming
Jack E. Veenhuis, Donald E. Hillier
1980, Water-Resources Investigations Report 80-113
Bibliography of geology and hydrology, southwestern New Mexico
Ann Finley Wright
1980, Water-Resources Investigations Report 80-20
The southwestern part of New Mexico is recognized as a source of abundant and varied natural resources. This bibliography of over 2,700 references concerned with geology, hydrology, chemistry, and geography has been compiled to assist physical science researchers in their study and development of this region....
Seawater intrusion and potential yield of aquifers in the Soquel-Aptos area, Santa Cruz County, California
K. S. Muir
1980, Water-Resources Investigations Report 80-84
Seawater has intruded the Purisima Formation in the interval 0-100 feet below sea level in the Soquel-Aptos area. It occurs in the central part of the area and extends inland about half a mile. The potential yields of the two principal aquifers in the Soquel-Aptos area are 4,400 acre-feet per...
Physical environment and hydrologic characteristics of coal-mining areas in Missouri
J. E. Vaill, James H. Barks
1980, Water-Resources Investigations Report 80-67
Hydrologic information for the north-central and western coal-mining regions of Missouri is needed to define the hydrologic system in these areas of major historic and planned coal development. This report describes the physical setting, climate, coal-mining practices, general hydrologic system, and the current (1980) hydrologie data base in these two...
An analysis of the magnitude and frequency of floods on Oahu, Hawaii
R. H. Nakahara
1980, Water-Resources Investigations Report 80-45
An analysis of available peak-flow data for the island of Oahu, Hawaii, was made by using multiple regression techniques which related flood-frequency data to basin and climatic characteristics for 74 gaging stations on Oahu. In the analysis, several different groupings of stations were investigated, including divisions by geographic location and...
A summary report of the regional geology, petroleum potential, environmental geology, and operational considerations in the area of proposed lease sale No. 68, offshore southern California
J. G. Vedder, J.K. Crouch, E. W. Scott, H. Gary Greene, D. Cranmer, M. Ibrahim, R.B. Tudor, G. Vinning
1980, Open-File Report 80-198
This report reviews geological, geophysical and technological data that are pertinent to proposed OCS Lease Sale 68. Under consideration are 26,000 mi2 (67,400 km2) of the California Continental Borderland north of the U.S.-Mexico boundary. The area includes both leased and unleased tracts and lies adjacent to the highly productive coastal...
Ground-water conditions in the upper Virgin River and Kanab Creek basins area, Utah, with emphasis on the Navajo Sandstone
R.M. Cordova
1980, Open-File Report 80-524-W
The upper Virgin River and Kanab Creek basins area occupies parts of Iron, Kane, and Washington Counties in south-central Utah. It includes about 1,300 square miles (3,370 square kilometers) in the upper Virgin River basin and about 650 square miles (1,680 square kilometers) in the upper Kanab Creek basin. The...
Status of USGS effort towards water depth determination with Landsat imagery
Alden P. Colvocoresses
1980, Open-File Report 80-102
No abstract available....
A summary report of the regional geology, environmental geology, OCS resource appraisal, petroleum potential, and operational considerations in the area of proposed lease sale 73, offshore California
David S. McCulloch
1980, Open-File Report 80-2007
This report reviews geological, geophysical and technological data pertinent to proposed Lease Sale 73. Under consideration is the entire continental margin of California that is bounded on the west by the 2500 meter isobath. This area encompasses the whole of the southern California Borderland, the continental shelves of central and...
Water resources data for Massachusetts and Rhode Island, water year 1979
Water Resources Division, U.S. Geological Survey
1980, Water Data Report MA-RI-79-1
Water-resources data for the 1979 water year for Massachusetts and Rhode Island consist of records of stage, discharge, and water quality of streams; contents of lakes and reservoirs; and ground-water levels. This report contains discharge records for 102 gaging stations, month end contents for 30 lakes and reservoirs, water quality...
Chemical analysis of 659 coal samples from the eastern United States
Peter Zubovic, Charles L. Oman, Linda J. Bragg, S.L. Coleman, N. H. Rega, M.E. Lemaster, H.J. Rose, D. W. Golightly, John Puskas
1980, Open-File Report 80-2003
This report includes the analytical data on 659 coal samples from 8 States east of the Mississippi River. The number of samples from each State are: Pennsylvania, 132; Ohio, 101; Maryland, 25; West Virginia, 254; Virginia, 33; Indiana, 49; Massachusetts, 5; and Rhode Island, 10. The analytic data are filed...
Water resources data for Hawaii and other Pacific areas, water year 1979: Volume 2. Trust Territory of the Pacific Islands, Guam, American Samoa, and Northern Mariana Islands
Water Resources Division, U.S. Geological Survey
1980, Water Data Report HI-79-2
Volume 2 of water resources data for the 1979 water year for other Pacific areas consist of records of stage, discharge, and water quality of streams; stage of a reservoir; and water levels in wells and springs. This report contains discharge records for 41 gaging stations; stage only record for...
