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Page 4538, results 113426 - 113450

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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,...
Salinity and flow relations and effects of reduced flow in the Chassahowitzka River and Homosassa River estuaries, southwest Florida
D. K. Yobbi, L. A. Knochenmus
1989, Water-Resources Investigations Report 88-4044
The Chassahowitzka and Homosassa Rivers Florida, are spring-fed streams flowing into the Gulf of Mexico that may be affected by future development of groundwaters. Reduction of streamflow may cause an upstream movement of saltwater in the rivers. Data on flow, tide, and salinity define the physical characteristics of both estuaries....
Simulation of changes in stormwater quality at four potential flow-attenuation sites in the Irondequoit Creek watershed, Monroe County, New York
Phillip J. Zarriello, Jan M. Surface
1989, Water-Resources Investigations Report 88-4106
The potential for improving stormwater quality in the Irondequoit Creek watershed, New York, using flow attenuation basins was analyzed by deterministic simulations of sediment retention. Simulations are based on ' plug-flow ' concepts and settling of particulate matter according to Stoke 's law in (1) temporary storage basins, which retain...
Hydraulic and salinity characteristics of the tidal reach of the Peace River, southwestern Florida
Y.E. Stoker, S.E. Henderson, B. F. McPherson
1989, Water-Resources Investigations Report 88-4162
The tidal reach of the Peace River in southwestern Florida extends about 26 miles upstream from Charlotte Harbor and is characterized by flow-direction reversals, low velocities, and salinity gradients that vary with freshwater inflow, tides, and wind. Flow reversals generally occur on each tide throughout most of the tidal reach,...
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...
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,...
Water-quality characteristics of the Columbia Plateau regional aquifer system in parts of Washington, Oregon, and Idaho
W.C. Steinkampf
1989, Water-Resources Investigations Report 87-4242
Water quality data for the period 1982 through 1983 from about 350 wells in three Miocene basalt units in the Columbia Plateau regional aquifer system, Washington, show that the quality of groundwater generally is suitable for most uses. The dominant water type is calcium magnesium bicarbonate at shallow depths, and...