Technique for estimating the magnitude and frequency of floods in Texas
E.E. Schroeder, B.C. Massey
1977, Water-Resources Investigations Report 77-110
Drainage area, slope, and mean annual precipitation were the only factors that were statistically significant at the 95-percent confidence level when the characteristics of the drainage basins were used as independent variables in a multiple-regression flood-frequency analysis of natural, unregulated streams in Texas. The State was divided into six regions...
Map showing ground-water conditions in the lower Verde River area, Maricopa, Yavapai, and Gila Counties, Arizona, 1976
P. P. Ross
1977, Water-Resources Investigations Report 77-113
Arizona is divided into 67 ground-water areas, and individual areas are selected for intensive data collection once every 6 years. The data collected in the lower Verde River area are given on a map that shows altitude of the water level, depth of water, well depth, chemical quality of the...
Hydrology of Lake Panasoffkee, Sumter County, Florida
G.F. Taylor
1977, Water-Resources Investigations Report 77-88
Lake Panasoffkee, in midwest Sumter County of central Florida, receives water from three creeks and discharges water through Outlet River at an average daily rate of 207 cubic feet per second. The eastern shore of the lake is marsh and wooded swamp with inflow to the lake coming from the...
Indiana stream-temperature characteristics
W. J. Shampine
1977, Water-Resources Investigations Report 77-6
Periodic stream-temperature data have been collected at 280 different sites in Indiana by the U.S. Geological Survey and the Indiana State Board of Health. These data have been analyzed using a simple-harmonic curve-fitting procedure. When the equation coefficients are known, calculations can be made for a given stream to estimate...
Hydrologic considerations associated with dredging spring ponds in Wisconsin
William J. Rose
1977, Water-Resources Investigations Report 77-18
Spring ponds (small spring-fed bodies of water) are natural features of some glaciated areas and have a continuous flow of ground water entering through their bottoms and exiting through surface outlets. Dredging has been used to restore ponds that have been filled in part or totally by sediment. The purpose of...
Techniques for Estimating Flood-Depth Frequency Relations on Natural Streams in Georgia
McGlone Price
1977, Water-Resources Investigations Report 77-90
Regional relations are defined for estimating the depth of floods having recurrence intervals of 10, 50, and 100 years on streams with natural flow in Georgia. Multiple-regression analysis of station data is used to define the relations between flood depths and frequency for streams draining from 1 to 1,000 square miles,...
Geohydrology of part of the Round Valley Indian Reservation, Mendocino County, California
K. S. Muir, Dwight Albert Webster
1977, Water-Resources Investigations Report 77-22
The Round Valley Indian Reservation in northern California obtains most of its water from the ground-water reservoir. The ground-water reservoir is made up of continental deposits, alluvium, and stream-channel deposits ranging in age from Pliocene to Holocene. Most of the water is pumped from the alluvium. Most ground water (about...
Saltwater intrusion in the shallow aquifer in Martin and Palm Beach counties, Florida
W. B. Scott, L. F. Land, H.G. Rodis
1977, Water-Resources Investigations Report 76-135
Urban growth has been rapid in recent years in Palm Beach and Martin Counties, Fla. The withdrawal of large quantities of fresh ground water in the vicinity of the coast has reduced or locally reversed the natural seaward hydraulic gradient and, in places, allowed saltwater to advance landward in the...
Digital-model evaluation of the ground-water resources in Ocotillo-Coyote Wells Basin, Imperial County, California
James A. Skrivan
1977, Water-Resources Investigations Report 77-30
A flow model using finite-element techniques has been constructed for an alluvial aquifer in the Ocotillo-Coyote Wells Basin, Imperial County, Calif. Natural recharge is about 2,600 acre-feet per year, and estimated ground water in storage is 640 ,000 acre-feet. Pumpage totaled 880 acre-feet in 1975. The computed decline from steady-state...
Potentiometric surface map of the Floridan Aquifer in the St. Johns River Water Management District and vicinity, Florida, September, 1977
F. A. Watkins, C. P. Laughlin, E. C. Hayes
1977, Water-Resources Investigations Report 78-69
This map presents the potentiometric surface of the Floridan aquifer in the St. Johns River Water Management District and vicinity for September 1977. The Floridan aquifer is the principal source of potable water in the area. Water-level measurements were made on approximately 900 wells and springs. The potentiometric surface is...
Effectiveness of pilot connector well in artificial recharge of the Floridan aquifer, western Orange County, Florida
Frank A. Watkins Jr.
1977, Water-Resources Investigations Report 77-112
A connector well pilot installation, in continuous operation in western Orange County since December 4, 1970, was transferring water from the lower of two shallow sand aquifers to the Floridan aquifer at a rate of 13 gallons per minute when measured on September 23, 1971. The recharge water is untreated...
Ground water in the Fresno area, California
K. S. Muir
1977, Water-Resources Investigations Report 77-59
The Fresno area of California uses about 140,000 acre-feet of ground water a year for municipal and domestic purposes. An average of 2,000,000 acre-feet of water a year is pumped for irrigation. Major sources of recharge are deep penetration of irrigation water (80 percent) and seepage from canals, rivers, and...
Ground-water resources along the Blue Ridge Parkway, North Carolina
M. D. Winner Jr.
1977, Water-Resources Investigations Report 77-65
The best areas to develop ground water along the Blue Ridge Parkway in North Carolina are in broad draws and in stream valleys where draws open to the valleys. Saprolite thickness in these places can exceed 50 feet and provide adequate ground-water storage; draws are topographic expressions of fracture zones...
Ground-water quality near a sewage-sludge recycling site and a landfill near Denver, Colorado
Stanley G. Robson
1977, Water-Resources Investigations Report 76-132
The Metropolitan Denver Sewage Disposal District and the City and County of Denver operate a sewage-sludge recycling site and a landfill in an area about 15 miles (24 kilometers) east of Denver. The assessment of the effects of these facilities on the ground-water system included determining the direction of ground-water...
Hydrology of the Creeping Swamp Watershed, North Carolina with reference to potential effects of stream channelization
M.D. Winner, C.E. Simmons
1977, Water-Resources Investigations Report 77-26
Hydrologic data were collected for four years at six sites in the Creeping Swamp watershed in eastern North Carolina in a preliminary effort to study the effects of stream channelization on the hydrology of a small watershed. A water-budget evaluation for pre-channelized conditions showed that runoff accounts for about 17...
Initial assessment of the ground-water resources in the Monterey Bay region, California
K. S. Muir
1977, Water-Resources Investigations Report 77-46
The Association of Monterey Bay Area Governments (AMBAG) has been designated as the areawide waste-treatment-management planning agency for the Monterey Bay region under Sec. 208 of the Federal Water Pollution Control Act Amendments of 1972 (Public Law 92-500). Sec. 208 establishes the authority and responsibility of the designated local agency...
Guide for data collection to calibrate a predictive digital ground-water model of the unconfined aquifer in and near the city of Modesto, California
R. W. Page
1977, Water-Resources Investigations Report 76-41
The city of Modesto encompasses about 12 square miles in the northeastern part of the San Joaquin Valley, Calif. The ground-water model encompasses about 542 square miles. In the Modesto area, ground water occurs in an unconfined aquifer a confined aquifer. both of which are composed of unconsolidated materials, and...
Experimental study of artificial recharge alternatives in northwest Hillsborough County, Florida
William C. Sinclair
1977, Water-Resources Investigations Report 77-13
Extensive water withdrawal from the Floridan aquifer in the urban Tampa Bay area has induced leakage from the overlying surficial aquifer adversely effecting the water table and lake levels. Artificial recharge could reduce the impact of these effects. Four experiments were conducted to investigate possible recharge alternatives; sinkhole recharge, water-spreading,...
Effects on ground-water quality from irrigating pasture with sewage effluent near Lakeland, Florida
R.C. Reichenbaugh
1977, Water-Resources Investigations Report 76-108
Since 1969 an average of 25,000 gpd of domestic secondary-treated effluent has been used to supplement irrigation of 30 acres of grazed pasture north of Lakeland, Florida. Monitor wells were contructed near the effluent-irrigated pasture. The water table in the surficial aquifer under the pasture varied from 1.0 to 3.3...
Evaluation of chemical, biological, and physical conditions in the Winter Haven chain of lakes, Florida, March-June 1976
R.C. Reichenbaugh, G.H. Hughes
1977, Water-Resources Investigations Report 77-52
Reconnaissance of water-quality conditions of 14 interconnected navigable lakes, in and around Winter Haven, Fla., revealed that in March and May, 1976 most were eutrophic, on the basis of high nutrient (nitrogen and phosphorus) concentrations. Lakes Lulu and Shipp were the most enriched as a result of surface runoff from...
Water resources of Okaloosa County and adjacent areas, Florida
Henry Trapp, C.A. Pascale, J.B. Foster
1977, Water-Resources Investigations Report 77-9
Okaloosa County, in the northwest Florida panhandle, uses the Floridan aquifer for water supply, although it also has abundant surface water and ground water in the surficial sand-and-gravel aquifer. Water levels have declined locally more than 90 feet in the upper limestone of the Floridan aquifer. The Floridan aquifer is...
A digital model of the Floridan Aquifer, north of Tampa, Florida
A.F. Robertson, M. J. Mallory
1977, Water-Resources Investigations Report 77-64
A regional ground-water model of the Floridan aquifer was constructed for an 875-square-mile portion of the rapidly developing area north of Tampa Bay. The digital model was calibrated by comparing observed (March 1974 and May 1975) and computed potentiometric heads. A good comparison was obtained by adjusting leakance and transmissivity....
Physical, chemical, and biological relations of four ponds in the Hidden Water Creek strip-mine area, Powder River Basin, Wyoming
David J. Wangsness
1977, Water-Resources Investigations Report 77-72
The Hidden Water Creek area in Wyoming was mined from 1944 to 1955 and abandoned. The open pits filled with water and pond-type ecosystems developed. Light was transmitted to greater depths within two control ponds located outside the mine area. The lower light transmittance in the ponds within the mined...
Limnology of selected lakes in Ohio, 1975
Robert L. Tobin, John D. Youger
1977, Water-Resources Investigations Report 77-105
Water-quality reconnaissance by the U.S. Geological Survey and Ohio Environmental Protection Agency, to evaluate the status of Ohio's lakes and reservoirs was begun in 1975 with studies of 17 lakes. Spring and summer data collections for each lake included: profile measurements of temperature, dissolved oxygen, pH, and specific conductance; field...
Geohydrology of the Englishtown Formation in the northern Coastal Plain of New Jersey
W. D. Nichols
1977, Water-Resources Investigations Report 76-123
The Englishtown Formation of the Matawan Group of Late Cretaceous age is exposed in the western part of the New Jeresy Coastal Plain along a northeast-southwest trending zone extending from Raritan Bay to Delaware Bay. In outcrop, in the northern part of the Coastal Plain, the Englishtown typically consists of...
