Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

68924 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 1931, results 48251 - 48275

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Hydrology of the U.S. Army Pinon Canyon maneuver site, Las Animas County, Colorado
Paul Von Guerard, P.O. Abbott, Raymond C. Nickless
1987, Water-Resources Investigations Report 87-4227
The U.S. Department of the Army (Fort Carson Military Reservation) has acquired 381 sq mi of semiarid rangeland in southeastern Colorado for mechanized military maneuvers. The study area, known as the Pinon Canyon Maneuver Site, drains into the Purgatoire River, a major tributary of the upper Arkansas River. A multidisciplined...
Ground-water resources of the Bisbee-Naco Area, Cochise County, Arizona
G. R. Littin
1987, Water-Resources Investigations Report 87-4103
The Bisbee-Naco Area is in southeastern Arizona and northeastern Sonora, Mexico. Annual rainfall averages about 17 inches. The basin fill is the principal aquifer and supplies about 95% of all water for domestic purposes. The total groundwater pumped in 1985 was about 6,500 acre/ft. Of that amount, 2,200 acre-ft was...
User's manual for estimation of dissolved-solids concentrations and loads in surface water
T.D. Liebermann, R.F. Middelburg, S.A. Irvine
1987, Water-Resources Investigations Report 86-4124
Dissolved solids in surface water are an important indicator of overall water quality. Ordinarily, dissolved-solids concentrations and loads are estimated by indirect methods that are based on periodic chemical analyses. Three computer programs , FLAGIT, DVCOND, and SLOAD, were developed to provide a consistent and accurate method of estimating dissolved-solids...
Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 6
S.S. DeJarnette, J.E. Crownover
1987, Water-Resources Investigations Report 87-4113
This report delineates and describes the geohyrology and susceptibility of the major aquifers to contamination in Area 6, Greene, Marengo, Pickens, Sumter, and Tuscaloosa Counties in west-central Alabama. The major aquifers in the study area are the Nanafalia, Eutaw, Gordo, and Coker aquifers of Tertiary and Cretaceous age. The recharge...
Effects on water quality due to flood-water detention by Barker and Addicks Reservoirs, Houston, Texas
Fred Liscum, R.L. Goss, E.M. Paul
1987, Water-Resources Investigations Report 86-4356
The Barker and Addicks Reservoirs, located about 16 miles west of Houston, Texas, provide flood-detention storage for storm runoff. Of interest are the water-quality characteristics in the study area and changes in water quality during detention. Study area sampling sites were selected upstream along Buffalo Bayou for Barker Reservoir and...
Calibration of a dissolved-solids model for the Yampa River basin between Steamboat Springs and Maybell, northwestern Colorado
R. S. Parker, D. W. Litke
1987, Water-Resources Investigations Report 86-4190
The cumulative effects of changes in dissolved solids from a number of coal mines are needed to evaluate effects on downstream water use. A model for determining cumulative effects of streamflow, dissolved-solids concentration, and dissolved-solids load was calibrated for the Yampa River and its tributaries in northwestern Colorado. The model...
Description of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
Jeffrey D. Martin, Charles G. Crawford, R.F. Duwelius, D.E. Renn
1987, Open-File Report 87-212
Information on the geology, geomorphology, soils, climate, hydrology, water use, land use, population, and coal mining history of Clay, Owen, Sullivan, and Vigo Counties in Indiana is summarized. Site-specific information is given on the morphology , geology, soils, land use, coal mining history, and hydrologic instrumentation of the six watersheds...
Potential for pollution of the Upper Floridan aquifer from five sinkholes and an internally drained basin in west-central Florida
J.T. Trommer
1987, Water-Resources Investigations Report 87-4013
Sinkholes are natural and common geologic features in west-central Florida, which is underlain by water soluble limestone deposits. Dissolution of these deposits is the fundamental cause of sinkhole development. Sinkholes and other karst features are more pronounced in the northern part of the study area, but sinkhole activity has occurred...
National and regional trends in water-well drilling in the United States, 1964-84
S. M. Hindall, Michael Eberle
1987, Open-File Report 87-247
Information on national and regional water well drilling activity is important for water resource planning and management and for water related equipment marketing. A study was conducted to analyze drilling trends on the basis of data for selected years from 1964 through 1984. The study focused primarily on the years...
Magnitude and frequency of floods in rural and urban basins of North Carolina
H.C. Gunter, R.R. Mason, T. C. Stamey
1987, Water-Resources Investigations Report 87-4096
The applicability of the nationwide urban flood relations in the Piedmont and Coastal Plain provinces is evaluated. Data for 254 gaging stations on rural streams with 10 or more years of record were used in multiple linear regression analyses with basin and climatic variables, to derive regional relations for estimating...
Water quality of Fremont Lake and New Fork Lakes, western Wyoming: A progress report
D. A. Peterson, R. C. Averett, K. L. Mora
1987, Water-Resources Investigations Report 86-4016
Fremont Lake and New Fork Lakes in the New Fork River drainage of western Wyoming were selected for a comprehensive study of hydrologic processes affecting mountain lakes in the Rocky Mountains. Information is needed about lakes in this area to assess their response to existing and planned development. The concerns...
Description and comparison of selected models for hydrologic analysis of ground-water flow, St. Joseph River basin, Indiana
J. G. Peters
1987, Water-Resources Investigations Report 86-4199
The Indiana Department of Natural Resources (IDNR) is developing water-management policies designed to assess the effects of irrigation and other water uses on water supply in the basin. In support of this effort, the USGS, in cooperation with IDNR, began a study to evaluate appropriate methods for analyzing the effects...
Nonpoint-source agricultural chemicals in ground water in Nebraska; preliminary results for six areas of the High Plains Aquifer
Hsiu-Hsiung Chen, A.D. Druliner
1987, Water-Resources Investigations Report 86-4338
The reconnaissance phase of a study to determine the occurrence of agricultural chemicals from nonpoint sources in groundwater in six areas, which represented the major provinces of the High Plains aquifer in Nebraska is described. In 1984, water from 82 wells in the 6 study areas was analyzed for nitrate,...