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Page 4507, results 112651 - 112675

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Trend analysis of Lake Parker stage and relation to various hydrologic factors, 1950-86, Lakeland, Florida
S.E. Henderson, M. A. Lopez
1989, Water-Resources Investigations Report 89-4037
Kendall tau test and regression analysis were used to determine if statistically significant long-term trends exist for Lake Parker, Florida stage data or for four other area lakes, four groundwater sites, four rainfall sites, Lakeland public-supply pumpage, and pan evaporation. A 10% significance level was used for criterion of an...
Application of the precipitation-runoff modeling system to the Ah-Shi-Sle-Pah Wash watershed, San Juan County, New Mexico
H. R. Hejl Jr.
1989, Water-Resources Investigations Report 88-4140
The precipitation-runoff modeling system was applied to the 8.21 sq-mi drainage area of the Ah-shi-sle-pah Wash watershed in northwestern New Mexico. The calibration periods were May to September of 1981 and 1982, and the verification period was May to September 1983. Twelve storms were available for calibration and 8 storms...
The hydrothermal system in central Twin Falls County, Idaho
R.E. Lewis, H.W. Young
1989, Water-Resources Investigations Report 88-4152
Thermal water in Twin Fall County has been used for space heating, large-scale greenhouse operations, and aquaculture since the mid-1970's. More recently, increased utilization of the thermal water has caused aquifer pressures to decline. Near the city of Twin Falls, water levels in some formerly flowing thermal wells have declined...
National and regional trends in water-well drilling in the United States, 1964-84
S. M. Hindall, Michael Eberle
1989, Circular 1029
Information on national and regional water-well drilling activity is important for water-resource planning and management and for water-related equipment marketing. This report describes a study to analyze drilling trends on the basis of data for selected years from 1964 through 1984. The study focused primarily on the years 1964 and...
Estimation of the recharge area of a pumped, stratified-drift aquifer in Connecticut by simulation modeling
D. L. Mazzaferro
1989, Water-Resources Investigations Report 87-4124
Groundwater quality management plans in Connecticut require information about the size and shape of recharge areas that contribute flow to pumping centers in extensive, stratified-drift aquifers. Flow models of a hypothetical aquifer , and a stratified-drift aquifer in Farmington are used to evaluate how contributing areas change in response to...
Measurement of reaeration coefficients for selected Florida streams
P. S. Hampson, J.E. Coffin
1989, Water-Resources Investigations Report 87-4020
A total of 29 separate reaeration coefficient determinations were performed on 27 subreaches of 12 selected Florida streams between October 1981 and May 1985. Measurements performed prior to June 1984 were made using the peak and area methods with ethylene and propane as the tracer gases. Later measurements utilized the...
Water resources of Brookings and Kingsbury counties, South Dakota
L.J. Hamilton
1989, Water-Resources Investigations Report 88-4185
Surface water and groundwater resources are widely distributed in Brookings and Kingsbury Counties, an area of nearly 1,700 sq mi of glaciated plains of the Coteau des Prairies plateau in eastern South Dakota. The resources are relatively undeveloped except for large withdrawals for irrigation from shallow glacial aquifers. Groundwater withdrawals...
Hydrogeology and ground-water-quality conditions at the Geary County landfill, northeast Kansas, 1988
N. C. Myers, P. R. Bigsby
1989, Water-Resources Investigations Report 89-4114
Chemical analysis of water from monitoring wells upgradient and downgradient of the Geary County Landfill in Kansas near Junction City indicate the presence of several chemically distinct water types. For the dominant calcium bicarbonate water type, concentrations of inorganic and organic constituents indicate the presence of reducing conditions within the...
Analysis of the effect of pumping on ground-water flow in the Springfield Plateau and Ozark aquifers near Springfield, Missouri
J. L. Imes
1989, Water-Resources Investigations Report 89-4079
Pumpage of water from the Ozark aquifer for public supply and industry use by the city of Springfield and surrounding communities in southwestern Missouri has significantly altered the potentiometric surface of the aquifer. Springfield is located on a regional groundwater divide that trends east and west across southern Missouri. Groundwater...
Effects of the 1986 drought on streamflow in Alabama, Georgia, North Carolina, South Carolina, Tennessee, and Virginia
Timothy W. Hale, Evelyn H. Hopkins, Robert F. Carter
1989, Water-Resources Investigations Report 89-4212
A severe drought in the Southeastern United States during 1986 resulted in the lowest flows of record for many streams. Minimum flows in many streams occurred in mid-summer, several months earlier in the year than the minimums that occurred during notable regional droughts of 1954 and 1981. Streamflow data for...
Geology and water resources of Owens Valley, California
Kenneth J. Hollett, W.R. Danskin, W. F. McCaffrey, C.L. Walti
1989, Open-File Report 88-715
Owens Valley, a long, narrow valley located along the east flank of the Sierra Nevada in east-central California, is the main source of water for the city of Los Angeles. The city diverts most of the surface water in the valley into the Owens River-Los Angeles Aqueduct system, which transports...
Triassic-Jurassic stratigraphy of the Culpeper and Barboursville basins, Virginia and Maryland
K. Y. Lee, A.J. Froelich
1989, Professional Paper 1472
The presence of Late Triassic and Early Jurassic spores and pollen throughout an exposed stratigraphic section has enabled the systematic palynofloral zonation of the entire Culpeper Group, supported in places by characteristic fish zones. Strata of the Culpeper Group range in age from the Late Triassic to the Early Jurassic....
Summary and interpretation of geochemical maps for stream sediment and heavy mineral concentrate samples, Mount Hayes Quadrangle, eastern Alaska Range, Alaska
Gary C. Curtin, Richard B. Tripp, Warren J. Nokleberg
1989, Miscellaneous Field Studies Map 1996-B
This report and accompanying maps summarize the results of geochemical exploration studies in the Mount Hayes quadrangle, Alaska. This is one of a series of maps and reports on the geological, geochemical, and geophysical studies of the quadrangle prepared as part of the Alaskan Mineral Resource Assessment Program (AMRAP) of...