Theoretical drawdown due to simulated pumpage from the Ohio River alluvial aquifer near Siloam, Kentucky
J. M. Kernodle
1977, Water-Resources Investigations Report 77-24
Theoretical drawdown due to simulated pumpage was determined for a site near Siloam, Kentucky by using a digital ground-water-flow model. The maximum sustained yield of water from the single well was shown to be less than 900 gallons per minute, and, for a simulated pumping rate of 450 gallons per...
Ground-water resources of the Riviera Beach area, Palm Beach County, Florida
L. F. Land
1977, Water-Resources Investigations Report 77-47
The principal source of freshwater that has been developed in the Riviera Beach area is the so-called shallow aquifer, which is composed of sand, shells, sandstone, limestone, marl, and occasionally clay strata. Often a stratum contains mixtures of two or more of these materials and occasionally they are cemented. The...
Water quality of selected streams in the coal area of southeastern Montana
J. R. Knapton, P. W. McKinley
1977, Water-Resources Investigations Report 77-80
This report summarizes and evaluates water-quality data collected at 35 stream sites the the coal region of southeastern Montana. Sarpy Creek, Armells Creek, and Rosebud Creek sometimes have dissolved-solids concentrations that cause water to be marginal for agricultural purposes. At times of rainfall and snowmelt, the runoff water mixes with...
Potential for downward leakage to the Floridan Aquifer, Green Swamp area, central Florida
H. F. Grubb
1977, Water-Resources Investigations Report 77-71
A qualitative evaluation of the potential for downward leakage from the surficial sand aquifer to the underlying Floridan aquifer was made for the Green Swamp area (about 870 sq mi) in central Florida. Downward leakage, or recharge, is limited under natural conditions owing to the nearness to land surface of...
Digital flow model of the Chowan River estuary, North Carolina
C.C. Daniel
1977, Water-Resources Investigations Report 77-63
A one-dimensional deterministic flow model based on the continuity equation had been developed to provide estimates of daily flow past a number of points on the Chowan River estuary of northeast North Carolina. The digital model, programmed in Fortran IV, computes daily average discharge for nine sites; four of these...
An analysis of salinity in streams of the Green River Basin, Wyoming
Lewis L. DeLong
1977, Water-Resources Investigations Report 77-103
Availability of ground water in the lower Connecticut River basin, southwestern New Hampshire
J. E. Cotton
1977, Water-Resources Investigations Report 77-79
This map scale 1:125,000 presents a preliminary assessment of the availability of ground water in the lower Connecticut River basin in southwestern New Hampshire. It is a generalization of several hydrogeologic factors and provides a guideline for ground-water exploration useful in water- and land-use planning. It does not describe the...
Potentiometric surface of the Floridan aquifer in the Suwannee River Water Management District, north Florida, May 1976
D.W. Fisk, J.C. Rosenau
1977, Water-Resources Investigations Report 77-1
A map showing the potentiometric surface of the Floridan aquifer was prepared for that area north and west of Gainesville to near Tallahassee, Florida. Contoured at 10-foot (3.048-meter) intervals and at a scale of 1:500,000, the map illustrates the altitude to which water would rise in tightly cased wells that...
Simulation studies of flow and sediment transport using a mathematical model, Atchafalaya River Basin, Louisiana
Marshall E. Jennings, Larry F. Land
1977, Water-Resources Investigations Report 77-14
Simulation studies were made of flow and sediment transport for the Atchafalaya River basin, Louisiana using a mathematical model calibrated and supplied by the Hydrologic Engineering Center and the New Orleans District, U.S. Army Corps of Engineers. The study results are based on three, 50-year computer simulations for the following...
Techniques for estimating magnitude and frequency of floods in Minnesota
Lowell C. Guetzkow
1977, Water-Resources Investigations Report 77-31
Estimating relations have been developed to provide engineers and designers with improved techniques for defining flow-frequency characteristics to satisfy hydraulic planning and design requirements. The magnitude and frequency of floods up to the 100-year recurrence interval can be determined for most streams in Minnesota by methods presented. By multiple regression...
Sedimentation in Santa Margarita Lake, San Luis Obispo County, California
G. Douglas Glysson
1977, Water-Resources Investigations Report 77-56
The 1975 storage capacity of Santa Margarita Lake in San Luis Obispo County, Calif., was 41,400 acre-feet, a decrease of 3,400 acre-feet since 1941. Usable capacity decreased from 25,800 to 23,000 acre-feet. Long-term sediment yield for the Salinas River basin upstream from the lake was estimated at 1,150 tons per...
Application of thermal imagery and aerial photography to hydrologic studies of karst terrane in Missouri
E.J. Harvey, J.H. Williams, T.R. Dinkel
1977, Water-Resources Investigations Report 77-16
Evaporation from seven reservoirs in the Denver water-supply system, central Colorado
John F. Ficke, D. Briane Adams, T. W. Danielson
1977, Water-Resources Investigations Report 76-114
Seven reservoirs in central Colorado, operated by the Denver Board of Water Commissioners, were studied during 1967-73 to determine evaporation losses. These reservoirs, Elevenmile Canyon, Dillon, Gross, Antero, Cheesman, Williams Fork, and Ralston, are located on both sides of the Continental Divide. Methods for computing evaporation include energy-budget, mass-transfer, and...
Availability of ground water in the lower Merrimack River basin southern New Hampshire
J. E. Cotton
1977, Water-Resources Investigations Report 77-69
This map, scale 1:125,000, is a preliminary assessment of the availability of ground water in the lower Merrimack River basin in southern New Hampshire. It is a generalization of several hydrogeologic factors and provides a guideline for ground-water exploration, which is useful in water- and land-use planning. It does not...
Computation of records of streamflow at control structures
Dannie L. Collins
1977, Water-Resources Investigations Report 77-8
Traditional methods of computing streamflow records on large, low-gradient streams require a continuous record of water-surface slope over a natural channel reach. This slope must be of sufficient magnitude to be accuratly measured with available stage measuring devices. On highly regulated streams, this slope approaches zero during periods of low...
Trophic conditions in Lake Winnisquam, New Hampshire
Leonard R. Frost Jr.
1977, Water-Resources Investigations Report 77-137
Lake Winnisquam has received treated domestic sewage for approximately 50 years and since June 1961 has been treated with copper sulfate to control the growth of nuisance algae. The Laconia City secondary sewage-treatment plant was upgraded in 1975 to include phosphorus removal. Phosphorus was not removed effectively until early 1976,...
Stream simulation in an analog model of the ground-water system on Long Island, New York
Arlen W. Harbaugh, Rufus T. Getzen
1977, Water-Resources Investigations Report 77-58
The stream circuits of an electric analog model of the ground-water system of Long Island were modified to more accurately represent the relationahip between streamflow and ground-water levels. Assumptions for use of the revised circuits are (1) that streams are strictly gaining, and (2) that ground-water seepage into the streams...
Ice on rivers and lakes: a bibliographic essay
Eleanore R. Ficke, John F. Ficke
1977, Water-Resources Investigations Report 77-95
Ice on rivers and lakes has many important influences on design and construction of structures, operation of shipping, flow and circulation, water quality, and other factors related to the use of the water resources. Human interest in understanding these influences has led to many programs of data collection, research, and...
Low-flow characteristics of Minnesota streams
K.L. Lindskov
1977, Water-Resources Investigations Report 77-48
Low-flow frequency data for 161 continuous-record gaging stations having eight or more complete years of record are presented for 1-, 7-, 14-, 30-, 60-, 90-, 120-, 183-, and 365-day low flows for frequencies ranging from once in 2 years to once in 100 years. In addition, 8,146 low-flow measurements at...
Techniques for estimating flood discharges for Oklahoma streams; Techniques for calculating magnitude and frequency of floods in Oklahoma from rural and urban areas under 2500 square miles, with compilations of flood data through 1975
Wilbert O. Thomas Jr., Robert K. Corley
1977, Water-Resources Investigations Report 77-54
Statewide regression equations are defined for estimating peak discharges of floods having recurrence intervals ranging from 2 to 500 years. Contributing drainage area, main-channel slope and mean annual precipitation are the independent variables required for estimating flood discharges for rural streams. For urban streams the percentage of the basin that...
Flood profiles of the Alafia River, west-central Florida, computed by step-backwater method
A.F. Robertson
1977, Water-Resources Investigations Report 77-74
The Alafia River is a coastal stream that discharges into Hillsborough Bay. The river and its two principal tributaries, North Prong Alafia River and South Prong Alafia River, drain an area of 420 sq mi of predominantly rural land. However, near the coast, urban residential developments are increasing. The flood...
Ground-water resources of Chester County, Pennsylvania
Laurence J. McGreevy, Ronald A. Sloto
1977, Water-Resources Investigations Report 77-67
Fifty gallons per minute (3 liters per second) or more may be obtained from wells in almost all parts of the county, but not at all locations. Adequate exploration to find fracture or solution openings is required. Five hundred gallons per minute (30 liters per second) or more may be...
The Winona-Tallahatta Aquifer in Mississippi
C. A. Spiers
1977, Water-Resources Investigations Report 77-125
This aquifer atlas describing the Winona-Tallahatta aquifer is the seventh in a series prepared in cooperation with the Mississippi Board of Water Commissioners. The atlas summarizes the large amount of unpublished data available in the files of the U.S. Geological Survey and it describes the extent, character, and present utilization...
The Cockfield aquifer in Mississippi
C. A. Spiers
1977, Water-Resources Investigations Report 77-17
The Cockfield Formation in the upper part of the Claiborne Group of Eocene age is a principal source of water supplies in Mississippi. The Cockfield Formation consists of beds of fine to medium sand, sandy carbonaceous clay, and thin beds of lignite. The largest withdrawal from the aquifer is in...
Magnitude and frequency of floods in California
Arvi O. Waananen, John R. Crippen
1977, Water-Resources Investigations Report 77-21
The magnitude and frequency of floods from gaged and ungaged drainage areas in California, for any recurrence interval from 2 to 100 years, can be estimated by use of the method presented. Equations relating flood magnitudes of selected frequency to basin characteristics such as drainage area, precipitation, and altitude were...
