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Page 4690, results 117226 - 117250

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Hydrologic data for the drainage basins of Chatfield and Cherry Creek Lakes, Denver metropolitan area, Colorado
J. W. Gibbs, L.M. Arnold, R.L. Reed
1983, Open-File Report 83-857
Chatfield and Cherry Creek Lakes are flood control lakes constructed by the U.S. Army Corps of Engineers and leased to the Colorado Division of Parks and Recreation. Both lakes are in the Denver metropolitan area and provide a variety of recreational activities, including boating, camping, fishing, picnicking, and swimming. The...
Simulated changes in ground-water levels related to proposed development of Federal coal leases, San Juan Basin New Mexico
P. F. Frenzel
1983, Open-File Report 83-949
The effects of coal-related ground-water withdrawals on potentiometric surfaces of aquifers in the San Juan Basin, New Mexico, were estimated. A previously published steady-state finite-difference digital model was converted to a transient-state model by changing boundary conditions and adding storage coefficients. No calibration of the transient-state model was attempted. Predicted...
Water resources in the Blackstone River basin, Massachusetts
Eugene H. Walker, Bruce E. Krejmas
1983, Open-File Report 83-700
The Blackstone River heads in brooks 6 miles northwest of Worcester and drains about 330 square miles of central Massachusetts before crossing into Rhode Island at Woonsocket. The primary source of the Worcester water supply is reservoirs, but for the remaining 23 communities in the basin, the primary source is wells. Bedrock...
Water resources of the Tulalip Indian Reservation, Washington
B. W. Drost
1983, Open-File Report 82-648
Water will play a significant role in the future development of the Tulalip Indian Reservation. Ground-water resources are sufficient to supply several times the 1978 population. Potential problems associated with increased ground-water development are saltwater encroachment in the coastal areas and septic-tank contamination of shallow aquifers. There are sufficient good-quality...
Analytical results for 544 water samples collected in the Attean Quartz Monzonite in the vicinity of Jackman, Maine
W. H. Ficklin, G.A. Nowlan, D. J. Preston
1983, Open-File Report 83-831
Water samples were collected in the vicinity of Jackman, Maine as a part of the study of the relationship of dissolved constituents in water to the sediments subjacent to the water. Each sample was analyzed for specific conductance, alkalinity, acidity, pH, fluoride, chloride, sulfate, phosphate, nitrate, sodium, potassium, calcium, magnesium,...
Forward and inverse cartographic projection procedures
G. I. Evenden
1983, Open-File Report 83-625
A set of procedures for performing 19 common cartographic transformations between geographic and artesian coordinate systems are presented along with instruction for usage, installation and testing results. These procedures are written in the RATFOR preprocessor language and effort was made to ensure transportability of the code as well as consistency...
Submarine canyon and slope processes of the U.S. Atlantic continental margin
B.A. McGregor
1983, Open-File Report 83-735
Two regions on the U.S. Atlantic continental margin were surveyed using single-channel, seismic-reflection profiling techniques: the Mid-Atlantic Continental Slope and Rise seaward of New Jersey in the vicinity of Baltimore Canyon and the Continental Slope and upper Rise just north of Cape Hatteras. Submarine canyons are the dominant morphologic feature...
A description of aquifer units in western Oregon
W. D. McFarland
1983, Open-File Report 82-165
Hydrogeologic information for western Oregon was compiled to aid the U.S. Environmental Protection Agency in evaluating proposals for underground injection of waste fluid. Geologic formations were grouped into seven aquifer units according to hydraulic and geologic similarities. The bedrock aquifer units in the Klamath Mountains, Coast Range, and Western Cascade...
Streamflow and water-quality data for lake and wetland inflows and outflows in the Twin Cities metropolitan area, Minnesota, 1981-82
Luanne Nelson, R. G. Brown
1983, Open-File Report 83-543
A study of runoff to selected lakes was done in the Twin Cities metropolitan area from July 1981 to December 1982. The purpose of the study was to determine differences in nutrient-loading characteristics for lakes with and without wetlands and settling ponds. The study also quantified nutrient loading to lakes...