Effect of urban runoff on the quality of lakes in Eagan, Minnesota
L. H. Tornes
1989, Water-Resources Investigations Report 86-4331
Sixteen lakes in the city of Eagan, Minnesota, were sampled during 1982-83 to detect water-quality changes that might have occurred because of urbanization since a previous study conducted during 1972-78. Each of the lakes was sampled five times to determine pH, specific conductance, dissolved oxygen, water temperature, transparency, and concentration...
Simulation of steady-state ground water and spring flow in the upper Floridan aquifer of coastal Citrus and Hernando Counties, Florida
D. K. Yobbi
1989, Water-Resources Investigations Report 88-4036
A digital groundwater flow model was developed to approximate steady-state predevelopment flow conditions in the Upper Floridan aquifer of coastal west-central Florida. The aquifer is the major source of water and natural spring flow in the area. The aquifer was simulated as a one-layer system with constant vertical recharge and...
Traveltime and reaeration of selected streams in the North Platte and Yampa River basins, Colorado
B. C. Ruddy, L. J. Britton
1989, Water-Resources Investigations Report 88-4205
Traveltime characteristics were measured using rhodamine WT dye as a tracer in the Canadian and Michigan Rivers in the North Platte river basin and in the Yampa, Elk, and Williams Fork Rivers, and Trout and Fish Creeks in the Yampa River basin of Colorado. Reaeration coefficients were determined by use...
Assessment of processes affecting low-flow water quality of Cedar Creek, west-central Illinois
Arthur R. Schmidt, W.O. Freeman, R.D. McFarlane
1989, Water-Resources Investigations Report 88-4141
Water quality and the processes that affect dissolved oxygen, nutrient (nitrogen and phosphorus species), and algal concentrations were evaluated for a 23.8-mile reach of Cedar Creek near Galesburg, west-central Illinois, during periods of warm-weather, low-flow conditions. Water quality samples were collected and stream conditions were measured over a diel (24...
Progress report on the ground-water, surface-water, and quality-of-water monitoring program, Black Mesa area, northeastern Arizona— 1988-89
R. J. Hart, J. P. Sottilare
1989, Open-File Report 89-383
The Black Mesa monitoring program in Arizona is designed to determine long-term effects on the water resources of the area resulting from withdrawals of groundwater from the N aquifer by the strip-mining operation of Peabody Coal Company. Withdrawals by Peabody Coal Company increased from 95 acre-ft in 1968 to 4...
Cost-effectiveness of the stream-gaging program in Kentucky
K.J. Ruhl
1989, Water-Resources Investigations Report 89-4067
This report documents the results of a study of the cost-effectiveness of the stream-gaging program in Kentucky. The total surface-water program includes 97 daily-discharge stations , 12 stage-only stations, and 35 crest-stage stations and is operated on a budget of $950,700. One station used for research lacks adequate source of...
Compilation of geohydrologic data collected as part of the areal appraisal of ground-water resources near Branson, Missouri
J. L. Imes
1989, Open-File Report 89-401
A rapidly developing retirement community and tourist industry in the Branson, Missouri area has created an increased demand for potable water, especially in the summer months. The rapid pace of residential and business expansion has created concerns regarding the future groundwater availability and quality. Water levels measured in the Ozark...
A point-infiltration model for estimating runoff from rainfall on small basins in semiarid areas of Wyoming
James G. Rankl
1989, Open-File Report 88-337
No abstract available....
Water movement in the unsaturated zone at a low-level radioactive-waste burial site near Barnwell, South Carolina
Kevin F. Dennehy, Peter B. McMahon
1989, Water Supply Paper 2345
Four unsaturated-zone monitoring sites and a meteorologic station were installed at the low-level radioactive-waste burial site near Barnwell, S.C., to investigate the geohydrologic and climatologic factors affecting water movement in the unsaturated zone. The study site is located in the Atlantic Coastal Plain. The unsaturated zone consists of a few...
Sources of coal-mine drainage and their effects on surface-water chemistry in the Claybank Creek basin and vicinity, north-central Missouri, 1983-84
Dale W. Blevins
1989, Water Supply Paper 2305
Eighteen sources of drainage related to past coal-mining activity were identified in the Claybank Creek, Missouri, study area, and eight of them were considered large enough to have detectable effects on receiving streams. However, only three sources (two coal-waste sites and one spring draining an underground mine) significantly affected the...
A computer program for converting rectangular coordinates to latitude-longitude coordinates
A. T. Rutledge
1989, Water-Resources Investigations Report 89-4070
A computer program was developed for converting the coordinates of any rectangular grid on a map to coordinates on a grid that is parallel to lines of equal latitude and longitude. Using this program in conjunction with groundwater flow models, the user can extract data and results from models with...
Geohydrology, simulation of ground-water flow, and ground-water quality at two landfills, Marion County, Indiana
R.F. Duwelius, T. K. Greeman
1989, Water-Resources Investigations Report 89-4100
Geologic, hydrologic, and water-quality data were collected at the Julietta and Tibbs-Banta landfills in Marion County. Both landfills were closed in the mid-1970's, and sewage sludge mixed with dirt was spread on the landfills in the mid-1980's as part of a revegetation project. The landfills were constructed in unconsolidated glacial sediments...
Results of hydrologic research at a low-level radioactive-waste disposal site near Sheffield, Illinois
Barbara J. Ryan, editor(s)
1989, Open-File Report 88-318
Ten years of hydrologic research have been conducted by the U.S. Geological Survey at a commercial low-level radioactive-waste disposal site near Sheffield, Illinois. Research included studies of microclimate, evapotranspiration, and tritium release by plants; runoff and land modification; water movement through a trench cover; water and tritium movement in the...
Studies of geology and hydrology in the Basin and Range Province, Southwestern United States, for isolation of high-level radioactive waste - Basis of characterization and evaluation
M. S. Bedinger, K. A. Sargent, William H. Langer, Frank B. Sherman, J.E. Reed, B. T. Brady
1989, Professional Paper 1370-A
The geologic and hydrologic factors in selected regions of the Basin and Range province were examined to identify prospective areas for further study that may provide isolation of high-level radioactive waste from the accessible environment. The six regions selected for study were characterized with respect to the following guidelines: (1)...
Hydrology of the Mississippi River Valley alluvial aquifer, south- central United States — A preliminary assessment of the regional flow system
D. J. Ackerman
1989, Water-Resources Investigations Report 88-4028
Data describing the aquifer framework and steady-state regional flow were assembled for the Mississippi River Valley alluvial aquifer north of Vicksburg, Mississippi. The aquifer is part of the Mississippi embayment aquifer system. The 60 to 140 ft thick alluvial aquifer grades from gravel at the bottom to fine sand near...
Hydrology of the Oakley Fan Area, south-central Idaho
H.W. Young, G. D. Newton
1989, Water-Resources Investigations Report 88-4065
The Oakley Fan area is a broad, crescent-shaped lowland along the southern margin of the Snake River Plain in south-central Idaho. Intensive groundwater development for irrigation has resulted in rapid water-level declines and, as a consequence, designation by the State of four Critical Groundwater Areas. Principal aquifers are in limestone,...
Procedure for evaluating observation-well networks in Wyoming, and application to northeastern Wyoming, 1986
J.C. Wallace, M. A. Crist
1989, Water-Resources Investigations Report 88-4215
A sequence of steps was developed for evaluating and modifying the existing, long-term, observation-well network in any part of Wyoming. The State was subdivided geographically into nine groundwater areas, including the northeastern Wyoming groundwater area, based on major structural features. Northeastern Wyoming was the first of the nine areas to...
Estimating soil matric potential in Owens Valley, California
Stephen K. Sorenson, Reuben F. Miller, Michael R. Welch, David P. Groeneveld, Farrel A. Branson
1989, Water Supply Paper 2370-C
Much of the floor of Owens Valley, California, is covered with alkaline scrub and alkaline meadow plant communities, whose existence is dependent partly on precipitation and partly on water infiltrated into the rooting zone from the shallow water table. The extent to which these plant communities are capable of adapting...
Evaluation of methodology for delineation of protection zones around public-supply wells in west-central Florida
John Vecchioli, J. D. Hunn, W. R. Aucott
1989, Water-Resources Investigations Report 88-4051
Public-supply wells in the west-central Florida area of Citrus, Hernando, Pasco, Hillsborough, and Pinellas Counties derive their supply solely from the Floridan aquifer system. In much of this area, the Floridan is at or near land surface and vulnerable to contamination. Recognizing this potential threat to the aquifer, the Florida...
Ground-water-flow modeling and optimization techniques applied to high-ground-water problems in San Bernardino, California
W.R. Danskin, J. R. Freckleton
1989, Open-File Report 89-75
No abstract available....
Variable-density ground-water flow and paleohydrology in the Waste Isolation Pilot Plant (WIPP) region, southeastern New Mexico
P. B. Davies
1989, Open-File Report 88-490
Variable-density groundwater flow was studied near the Waste Isolation Pilot Plant in southeastern New Mexico. An analysis of the relative magnitude of pressure-related and density-related flow-driving forces indicates that density-related gravity effects are not significant at the plant and to the west but are significant in areas to the north,...
Simulation analysis of the ground-water system in Mesozoic rocks in the Four Corners area, Utah, Colorado, Arizona, and New Mexico
B. E. Thomas
1989, Water-Resources Investigations Report 88-4086
The steady-state groundwater system in Mesozoic rocks in the Four Corners area, Utah, Colorado, Arizona, and New Mexico, was simulated with a finite-difference digital-computer model to improve the understanding of the system. The simulated area is 4 ,100 sq mi, and it includes three aquifers. The Entrada-Navajo aquifer includes the...
Hydrogeology, ground-water movement, and subsurface storage in the Floridan aquifer system in southern Florida
Frederick W. Meyer
1989, Professional Paper 1403-G
The Floridan aquifer system of southern Florida is composed chiefly of carbonate rocks that range in age from early Miocene to Paleocene. The top of the aquifer system in southern Florida generally is at depths ranging from 500 to 1,000 feet, and the average thickness is about 3,000 feet. It...
Program SEISRISK III adapted to personal computers computer file, Part C - ASCII format, OS/2 executable module
E.P. Arnold
1989, Open-File Report 89-557-C
Description of data files compiled for the Central Midwest Regional Aquifer-System Analysis
John O. Helgesen, Cristi V. Hansen
1989, Open-File Report 89-42
Several types of geologic and hydrologic data were collected and compiled as part of the Central Midwest Regional Aquifer-System Analysis. The study described the hydrology of Cambrian-age through Cretaceous-age rocks in all of Kansas and Nebraska and parts of eight other states. Information from both water wells and petroleum wells...
