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...
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...
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...
Technique for estimating magnitude and frequency of floods in Illinois
George W. Curtis
1977, Water-Resources Investigations Report 77-117
A technique is presented for estimating flood magnitudes at recurrence intervals ranging from 2 to 500 years, for unregulated rural streams in Illinois, with drainage areas ranging from 0.02 to 10,000 square miles. Multiple regression analyses, using streamflow data from 241 sampling sites, were used to define the flood-frequency relationships....
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...
An analysis of salinity in streams of the Green River Basin, Wyoming
Lewis L. DeLong
1977, Water-Resources Investigations Report 77-103
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,...
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...
Availability of ground water in the Piscataqua and other coastal river basins southeastern New Hampshire
J. E. Cotton
1977, Water-Resources Investigations Report 77-70
This map (scale 1:125,000) is a preliminary assessment of the availability of ground water in the Piscataqua and coastal river basins in New Hampshire. It is a generalization of several hydrogeologic factors and provides a guide for ground-water exploration, which is useful in water- and land-use planning. The best aquifers...
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...
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...
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...
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...
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...
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...
Frequency analysis of Illinois floods using observed and synthetic streamflow records
George W. Curtis
1977, Water-Resources Investigations Report 77-104
Equations, applicable Statewide, for estimating flood magnitudes having recurrence intervals ranging from 2 to 500 years for unregulated rural streams, with drainage areas ranging from 9.02 to 10,000 square miles (0.05 to 25,900 sqiiare kilometers), were derived by multiple regression an. A rainfall-runoff model was used in the synthesis of...
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...
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...
Ground-water hydrology of the Lower Milliken-Sarco-Tulucay Creeks area, Napa County, California
Michael J. Johnson
1977, Water-Resources Investigations Report 77-82
The Sonoma Volcanics are the principal water-bearing materials in the lower Milliken-Sarco-Tulucay Creeks area, which occupies about 15 square miles (39 square kilometers) in and east of Napa, Calif. The distribution and composition of these volcanic units are highly variable and complex. Within the Sonoma Volcanics the tuffs constitute the...
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...
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...
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...
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...
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...
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...
