Evaluation of ground-water quality in the Santa Maria Valley, California
Jerry L. Hughes
1977, Water-Resources Investigations Report 76-128
The quality and quantity of recharge to the Santa Maria Valley groundwater basin from natural sources, point sources, and agriculture were evaluated. The results are expressed in terms of a hydrologic budget, a solute balance, and maps showing the distribution of selected chemical constituents in ground water. Point sources of...
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...
Digital model analysis of the principal artesian aquifer, Savannah, Georgia area
H. B. Counts, R.E. Krause
1977, Water-Resources Investigations Report 76-133
A digital model of the principal artesian aquifer has been developed for the Savannah, Georgia, area. The model simulates the response of the aquifer system to various hydrologic stresses. Model results of the water levels and water-level changes are shown on maps. Computations may be extended in time, indicating changes...
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
Floods of November 12, 1974 in the Charlotte Amalie area, St Thomas, US Virgin Islands
W.J. Haire, K. G. Johnson
1977, Water-Resources Investigations Report 76-91
The flood on St. Thomas, U.S. Virgin Islands, of November 12, 1974, was the largest recorded flood in the area from Fort Christian through Charlotte Amalie and Frenchtown to the end of Crown Bay. This flood has a recurrence interval of about 60 years. With the exception of a few...
Hydrologic evaluation of the Arikaree Formation near Lusk, Niobrara and Goshen counties, Wyoming
M. A. Crist
1977, Water-Resources Investigations Report 77-111
The Arikaree Formation of early Miocene age is an aquifer of large areal extent and is composed of very fine grained, poorly bedded, loosely to moderately cemented sandstone and interbedded silt, limestone, and many concretionary layers. The area studied is about 800 square miles in southern Niobrara and northern Goshen...
Water and related problems in coal-mine areas of Alabama
Alfred L. Knight, John G. Newton
1977, Water-Resources Investigations Report 76-130
Water-resource problems or potential problems in Alabama resulting from surface and subsurface coal mining include erosion and sedimentation, flooding, diversion of drainage, decline in water level, land subsidence, and the degradation of water quality. The degradation of water quality is the most serious and widespread coal-mine related problem in Alabama....
Public water supplies of selected municipalities in Florida, 1975
H.G. Healy
1977, Water-Resources Investigations Report 77-53
In 1975, the 169 municipalities and 5 county water systems listed in this report supplied 1.037 million gallons of water each day, on the average to 77 percent of the population of the State of Florida. The quantity of water supplied represented 90 percent of the State's public water supply...
Computer simulation of two-dimensional unsteady flows in estuaries and embayments by the method of characteristics : Basic theory and the formulation of the numerical method
Chintu Lai
1977, Water-Resources Investigations Report 77-85
Two-dimensional unsteady flows of homogeneous density in estuaries and embayments can be described by hyperbolic, quasi-linear partial differential equations involving three dependent and three independent variables. A linear combination of these equations leads to a parametric equation of characteristic form, which consists of two parts: total differentiation along the bicharacteristics...
Maps showing ground-water conditions in the southern part of the Chinle area, Apache County, Arizona, 1976
G. W. Levings, C. D. Farrar
1977, Water-Resources Investigations Report 77-50
The southern part of the Chinle area includes about 2,100 sq mi in northeastern Arizona and is entirely in the Navajo Indian Reservation. The main source of water is the ground water in the several aquifers that are made up of one or more formations. The aquifers are stacked one...
Distribution and abundance of benthic organisms in the Sacramento River, California
Rodger F. Ferreira, D. Brady Green
1977, Water-Resources Investigations Report 77-60
General comparisons were made between benthic organism samples collected in 1960-61 and 1972-73 from five sites in the Sacramento River between Red Bluff and Knights Landing, Calif. The composition of benthic organisms from both collection periods was similar. The 1972-73 data showed variable patterns in monthly changes at each site...
Ground-water resources of the Lexington, Kentucky, area
R.J. Faust
1977, Water-Resources Investigations Report 76-113
Ground water in the Lexington, Kentucky, area occurs in Ordovician Limestones in which cavity development is generally limited to about 100 feet below land surface. Some wells produce about 300 gallons per minute in some of the large stream valleys , about 50 gallons per minute in the rolling upland...
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...
Maps showing ground-water conditions in the Monument Valley and northern part of the Black Mesa areas, Navajo, Apache, and Coconino counties, Arizona, 1976
G. W. Levings, C. D. Farrar
1977, Water-Resources Investigations Report 77-44
The Monument Valley and the northern part of the Black Mesa areas include about 2,700 sq mi in northeastern Arizona and are entirely in the Navajo and Hopi Indian Reservations. The main source of water is from the several aquifers that are made up of one or more formations. The...
Maps showing ground-water conditions in the northern part of the Chinle area, Apache County, Arizona, 1976
G. W. Levings, C. D. Farrar
1977, Water-Resources Investigations Report 77-35
The northern part of the Chinle area includes about 3,000 sq mi in northeastern Arizona and is entirely in the Navajo Indian Reservation. The main source of water is from the several aquifers that are made up of one or more formations. The aquifers are stacked one on the other...
Maps showing ground-water conditions in the southern part of the Black Mesa area, Navajo, Apache, and Coconino Counties, Arizona, 1976
Gary W. Levings, C. D. Farrar
1977, Water-Resources Investigations Report 77-41
The southern part of the Black Mesa area includes about 2,500 mi2 in northeastern Arizona and is entirely in the Navajo and Hopi Indian Reservations. The main source of water is the ground water in the several aquifers that are made up of one or more formations. The aquifers are...
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...
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...
Saline-water intrusion in the Floridan Aquifer in the Fernandina Beach area, Nassau County, Florida
Roy W. Fairchild, C.B. Bentley
1977, Water-Resources Investigations Report 77-32
The Floridan aquifer is the major source of water for municipal and industrial use in northeastern Nassau County, Florida. Pumpage from the aquifer at Fernandina Beach has created a cone of depression in the potentiometric surface which is at or below sea level in a 35-square mile area. Since 1880...
Derivation of equations describing solute transport in ground water
Leonard F. Konikow, D.B. Grove
1977, Water-Resources Investigations Report 77-19
A general equation describing the three-dimensional transport and dispersion of a reacting solute in flowing ground water is derived from the principle of conservation of mass. The derivation presented is more detailed but less rigorous than derivations published previously. The general solute-transport equation relates concentration changes to hydrodynamic dispersion, convective...
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. ...
Artificial-recharge tests in Upper Black Squirrel Creek basin, Jimmy Camp Valley, and Fountain Valley, El Paso County, Colorado
P.J. Emmons
1977, Water-Resources Investigations Report 77-11
Artificial-recharge tests were conducted in the alluvium in upper Black Squirrel Creek basin, the alluvium in Jimmy Camp Valley, and in the alluvium overlying the Widefield aquifer which is located in an ancestral channel in Fountain Valley, Colo. Nine artificial-recharge pits with areas of approximately 9,200 square feet each were...
Ground-water resources of the alluvial aquifers in northeastern Larimer County, Colorado
R. T. Hurr, P.A. Schneider
1977, Water-Resources Investigations Report 77-7
Ground water is a source of municipal, domestic, stock, and irrigation supply for most of northeastern Larimer County, Colo. A study of the alluvial aquifers in the northeastern part of the county was conducted to determine volume of water in storage, rate and location of ground-water withdrawals, and chemical quality...
Distribution of nitrate in ground water, Redlands, California
Lawrence A. Eccles, Wesley L. Bradford
1977, Water-Resources Investigations Report 76-117
Wells producing water with nitrate as nitrogen concentrations in excess of 10 milligrams per liter are common throughout the Redlands, Calif., area. Nitrite as nitrogen concentrations in water from the saturated part of the aquifer ranged from much greater than 20 milligrams per liter at the water table to less...
Low-flow characteristics at gaging stations on the Wisconsin, Fox, and Wolf rivers, Wisconsin
W.A. Gebert, B. K. Holmstrom
1977, Water-Resources Investigations Report 77-27
Low-flow characteristics are presented at eleven gaging stations on the main stem of the Wisconsin, Fox, and Wolf Rivers in this report. The low-flow characteristics presented are the annual minimum 7-day mean flow below which the flow will fall on the average of once in 2 years (Q7, 2) and...
