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...
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...
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...
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...
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...
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...
Hydrologic map of the Orlando West Quadrangle, Florida
W.D. Wood, L.J. Snell
1977, Water-Resources Investigations Report 77-135
No abstract available. ...
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,...
Time of travel of solutes in the Tuscarawas River Basin, Ohio, August and September, 1974
Arthur O. Westfall, Earl E. Webber
1977, Water-Resources Investigations Report 77-23
A time-of-travel study was made on a 106-mile reach of the Tuscarawas River to determine average velocity and dispersion characteristics between selected points. The reach was divided into five subreaches, and a fluorescent dye used as a tracer material. At about the 50-percent flow-duration level, time of travel of the...
Hydrologic map of the Orlando East Quadrangle, Florida
W.D. Wood, L.J. Snell
1977, Water-Resources Investigations Report 77-134
No abstract available. ...
Reconnaissance of ground-water resources in the Mountain Home plateau area, southwest Idaho
H.W. Young
1977, Water-Resources Investigations Report 77-108
The Mountain Home plateau area occupies approximately 1,220 square miles of the western Snake River Plain in southwestern Idaho. About 40,000 acres are presently (1977) irrigated with ground water, about 30,000 acres with surface water. An estimated 450,000 acres are potentially irrigable, if water is available. Development of ground-water re-sources...
Listing of analytical results for rock, stream-sediment, water, and algae samples, calculated minimum thermal-reservoir temperatures, and the statistical summary of the analytical results for rock and stream-sediment samples, Charles Sheldon wilderness study area, Humboldt and Washoe counties, Nevada, and Lake County, Oregon
John B. Cathrall, E.F. Cooley, T. M. Bilings, R. J. Smith, G. L. Crenshaw, M. L. Marchitti
1977, Open-File Report 77-403
No abstract available....
Evaluation of a potential well field near Church Rock as a water supply for , New Mexico
Glenn A. Hearne
1977, Water-Resources Investigations Report 77-98
No abstract available. ...
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...
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...
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...
The use of Galerkin finite-element methods to solve mass-transport equations
David B. Grove
1977, Water-Resources Investigations Report 77-49
The partial differential equation that describes the transport and reaction of chemical solutes in porous media was solved using the Galerkin finite-element technique. These finite elements were superimposed over finite-difference cells used to solve the flow equation. Both convection and flow due to hydraulic dispersion were considered. Linear and Hermite...
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 appraisal of the Pineland Sands area, central Minnesota
J. O. Helgesen
1977, Water-Resources Investigations Report 77-102
The Pineland Sands area consists of 770 square miles of surficial glacial outwash, which is undergoing increasing ground-water development for irrigation. The aquifer material is commonly very fine sand to fine gravel, and grain size generally increases from south to north. Thickness, transmissivity, and theoretical well yields are highest in...
Water quality in Rhode River at Smithsonian Institution Pier near Annapolis, Maryland, January 1974 through December 1975
Robert L. Cory
1977, Water-Resources Investigations Report 77-20
Preliminary flood-frequency relations for urban streams, Metropolitan Atlanta, Georgia
Harold G. Golden
1977, Water-Resources Investigations Report 77-57
A method is presented for estimating the magnitude and frequency of floods for urban streams in metropolitan Atlanta. The method is based on adjustments to the natural stream flood-frequency and rainfall-frequency characteristics of the local area as defined by urban flood studies in other areas.The effects of urbanization on flood-peak...
Water-level changes in wells along the west side of the Cedar Creek anticline, southeastern Montana
D.L. Coffin, T.E. Reed, S.D. Ayers
1977, Water-Resources Investigations Report 77-93
Water levels have been measured periodically in wells along the west side of the Cedar Creek anticline in southeastern Montana since 1962-64. The measurements show the response of the Fox Hills-Hell Creek aquifer of Late Cretaceous age to withdrawals for domestic, stock, and industrial uses. Water levels were as much...
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...
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...
Ground water in the Koehn Lake area, Kern County, California
J. H. Koehler
1977, Water-Resources Investigations Report 77-66
Hydrologic characteristics of the Koehn Lake area were investigated to determine the effects of external stresses on the system. Unconsolidated deposits are more than 900 feet thick in the central part of the basin. Cantil Valley fault, in the central part of the basin, acts as a barrier to the...
