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Page 4990, results 124726 - 124750

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Not all publications have extents, not all extents are completely accurate
Calibration of a distributed routing rainfall-runoff model at four urban sites near Miami, Florida
W. Harry Doyle Jr., Jeffrey E. Miller
1980, Water-Resources Investigations Report 80-1
Urban stormwater data from four Miami, Fla. catchments were collected and compiled by the U.S. Geological Survey and were used for testing the applicability of deterministic modeling for characterizing stormwater flows from small land-use areas. A description of model calibration and verification is presented for: (1) A 40.8 acre single-family...
Statistical analyses of surface-water-quality variables in the coal area of southeastern Montana
J. R. Knapton, Rodger F. Ferreira
1980, Water-Resources Investigations Report 80-40
Since 1974 a network of water-quality stations has been operated in the coal area of southeastern Montana. This report updates a previous report with 2 years of additional data collection and presents statistics and regression equations for water-quality variables. The most apparent feature of the study is the variability of...
Simulation of water-quality data at selected stream sites in the Missouri River Basin, Montana
J. R. Knapton, M.A. Jacobson
1980, Water-Resources Investigations Report 80-76
Modification of sampling programs at some water-quality stations in the Missouri River basin in Montana has eliminated the means by which solute loads have been directly obtained in past years. To compensate for this loss, water-quality and streamflow data were statistically analyzed and solute loads were simulated using computer techniques.Functional...
Distribution of nitrate in the unsaturated zone, Highland-East Highlands area, San Bernardino County, California
John M. Klein, Wesley L. Bradford
1980, Water-Resources Investigations Report 80-48
Nitrogen in the unsaturated soil zone in the Highland-East Highlands area of San Bernardino County, Calif., has been suspected as the source of nitrate in water from wells. Plans to recharge the local aquifers with imported surface water would raise the water table and intercept that nitrogen. This study was...
Dissolved-solids concentrations and loads in return flows to the Colorado River from agricultural land in southern California
John M. Klein, Wesley L. Bradford
1980, Water-Resources Investigations Report 80-52
The dissolved-solids concentration in Colorado River water increases from less than 50 mg/L (milligrams per liter) at the river's origin to about 700 mg/L at the California border and to about 900 mg/L at the United States-Mexico boundary. Much of the latter increase is due to depletion by agricultural use...
Potential effects of increased ground-water pumpage on Barka Slough, San Antonio Creek Valley, Santa Barbara County, California
Michael J. Mallory
1980, Water-Resources Investigations Report 80-95
Ground-water use in San Antonio Creek valley is expected to increase significantly as a result of planned extensive agricultural development in the basin. The effects of this additional stress on the ground-water system, particularly on the environmentally sensitive Barka, Slough, are of concern in the basin.Expectations of the developer are...
Calibration and potential uses of a digital water-quality model for the Arkansas River in Pueblo County, Colorado
Kimball E. Goddard
1980, Water-Resources Investigations Report 80-38
The U.S. Geological Survey conducted a 1-year study to calibrate and demonstrate the use of a steady-state water quality model for a 42-mile reach of the Arkansas River in Pueblo County, Colo. Based on the calibration, the model is capable of accurately predicting concentrations of carbonaceous biochemical oxygen demand, total...
Reconnaissance snow survey of the National Petroleum Reserve in Alaska, April-May 1979
William J. Glude, Charles E. Sloan
1980, Water-Resources Investigations Report 80-49
Moderately low snowfall and an early and abrupt spring thaw resulted in removal of most of the snow cover from the National Petroleum Reserve in Alaska (NPRA) before the snow survey of April 30 through May 2, 1979. Logistical problems and lack of snow permitted sampling at only seven sites....
A limnological study of 43 selected Maine lakes
Derrill J. Cowing, Matthew Scott
1980, Water-Resources Investigations Report 80-69
Federal and State legislation require the trophic classification of lakes and ponds in the State of Maine as part of a lake management program. In 1974, the State of Maine Department of Environmental Protection (DEP) adopted a preliminary set of procedures for establishing an index of lake trophic status. Also...
The effects of highway construction on sediment discharge into Blockhouse Creek and Steam Valley Run, Pennsylvania
Robert A. Hainly
1980, Water-Resources Investigations Report 80-68
From October 1972 through September 1977, the effects of highway construction in the 38 square mile Blockhouse Creek basin were studied. Water discharge, suspended-sediment discharge, and stream-temperature data were collected at four stations in the basin. The 5-year period included 1 year before construction, 2 years during construction, and 2...
Water-quality monitoring of three major tributaries to the Chesapeake Bay: Interim data report
David J. Lang, David Grason
1980, Water-Resources Investigations Report 80-78
The U.S. Geological Survey is monitoring the water quality of three major tributaries to Chesapeake Bay at their fall lines to obtain estimates of constituent inputs potentially available to the bay. The monitoring sites are: Susquehanna River at Conowingo, Md.; Potomac River at Washington, D.C.; and James River at Cartersville,...
Estimated water use in Florida, 1977
Stanley D. Leach, Henry G. Healy
1980, Water-Resources Investigations Report 79-112
During 1977, an average of 21,466 million gallons of water was withdrawn daily for use in Florida--an increase of 6,153 million gallons per day since 1970. The 1977 daily use was 14,812 million gallons of saline water and 6,654 million gallons of freshwater. Most of the saline water, largely surface...
Computer-model analysis of the use of Delaware River water to supplement water from the Potomac-Raritan-Magothy aquifer system in southern New Jersey
Arlen W. Harbaugh, J. E. Luzier, Flavian Stellerine
1980, Water-Resources Investigations Report 80-31
A computer model of the Potomac-Raritan-Magothy aquifer system was used to simulate the effects of supplementing ground water with water from the Delaware River. Replacement of ground water pumpage with surface water in a 150-square-mile area near Camden, N.J., was simulated. Artificial recharge of surface water was also simulated in...
Using channel geometry to estimate flood flow at ungaged sites in Idaho
W. A. Harenberg
1980, Water-Resources Investigations Report 80-32
Measurements at bankfull stage were made at 136 sites to determine whether predictions of flood discharges using channel-geometry characteristics are as good as or better than predictions using basin characteristics. These measurements are used to determine the variables of bankfull width, area, depth, and velocity. These variables are combined with...
Water quality of the Neuse River, North Carolina: Variability, pollution loads, and long-term trends
Douglas A. Harned
1980, Water-Resources Investigations Report 80-36
A water-quality study of the Neuse River, N.C., based on data collected during 1956-77 at the U.S. Geological Survey stations at Clayton and Kinston, employs statistical trend analysis techniques that provide a framework for river quality assessment. Overall, water-quality of the Neuse River is satisfactory for most uses. At Clayton,...
Geothermal gradients in the Missoula and Bitterroot Valleys, west-central Montana
Robert B. Leonard, Wayne A. Wood
1980, Water-Resources Investigations Report 80-89
Temperature-depth profiles of six cased test holes in the Missoula and Bitterroot Valleys, west-central Montana, consist of linear segments, the intersections of which commonly correspond with lithologic boundaries. Geothermal gradients commonly decreased with depth, probably as a result of compaction and higher quartz content of the deeper sedimentary deposits. There...
A water-quality monitoring network for Vallecitos Valley, Alameda County, California
C. D. Farrar
1980, Water-Resources Investigations Report 80-59
A water-quality monitoring network is proposed to detect the presence of and trace the movement of radioisotopes in the hydrologic system in the vicinity of the Vallecitos Nuclear Center. The source of the radioisotopes is treated industrial wastewater from the Vallecitos Nuclear Center that is discharged into an unnamed tributary...
Chemical quality of water from community systems in New York, November 1970 to May 1975
Robert H. Cartwright, James A. Ziarno
1980, Water-Resources Investigations Report 80-77
Chemical analyses of 2,802 water samples from 784 of approximately 1,500 community water systems in the State of New York are presented. The data were collected from November 1970 to May 1975 and were originally released in a series of four U.S. Geological Survey open-file reports during the mid-1970's. The...
A technique for estimating flood heights on small streams in the city of Charlotte and Mecklenburg County, North Carolina
William H. Eddins, N.M. Jackson Jr.
1980, Water-Resources Investigations Report 80-106
A method for estimating the height reached by floods having recurrence intervals of 10, 20, and 100 years is defined for unregulated streams in Charlotte and Mecklenburg County draining areas of less than 1.0 square mile. Flood heights, defined as the vertical distance between the streambed at riffles and the...
Investigation of artificial recharge of aquifers in Nebraska
William F. Lichtler, David I. Stannard, Edwin Kouma
1980, Water-Resources Investigations Report 80-93
Large withdrawals of ground water for irrigation are causing progressive declines of ground-water levels in some areas of Nebraska. An investigation was conducted to determine the technical feasibility of artificially recharging aquifers through wells and through surface spreading by means of impoundments, pits, and canals. Information gained from a literature...
Geology and ground water in north-central Santa Cruz County, California
Michael J. Johnson
1980, Water-Resources Investigations Report 80-26
North-central Santa Cruz County is underlain mainly by folded sedimentary rocks of Tertiary and Cretaceous age that have been highly fractured by movements in the San Andreas fault system. Ground water is stored in fractures within shale and mudstone formations and in intergranular pore spaces within fine- to very fine-grained...
Hydrology and model study of the proposed Prosperity Reservoir, Center Creek Basin, southwestern Missouri
Edward Joseph Harvey, Leo F. Emmett
1980, Water-Resources Investigations Report 80-7
A dam and reservoir have been proposed for construction on Center Creek, Jasper County, in southwestern Missouri. Ground-water levels in the hills adjacent to the reservoir will rise when the impoundment is completed. One of the problems is that the proposed site of Prosperity Reservoir is a few miles upstream...
Temperature and solute-transport simulation in streamflow using a Lagrangian reference frame
Harvey E. Jobson
1980, Water-Resources Investigations Report 81-2
A computer program for simulating one-dimensional, unsteady temperature and solute transport in a river has been developed and documented for general use. The solution approach to the convective-diffusion equation uses a moving reference frame (Lagrangian) which greatly simplifies the mathematics of the solution procedure and dramatically reduces errors caused by...