Technique for estimating magnitude and frequency of peak flows in Delaware
J.J. Dillow
1996, Water-Resources Investigations Report 95-4153
Methods are presented for estimating peak-flow magnitudes of selected frequencies for drainage basins in Delaware. The methods were developed by generalized least-squares regression techniques using data from 74 streamflow-gaging stations in and near Delaware, and apply to peak flows with recurrence intervals of 2, 5, 10, 25, 50, 100, and...
Water-quality assessment of the Connecticut, Housatonic, and Thames River Basins study unit: Analysis of available data on nutrients, suspended sediments, and pesticides, 1972-92
Marc J. Zimmerman, Stephen J. Grady, Elaine C. Todd Trench, Sarah M. Flanagan, Martha G. Nielson
1996, Water-Resources Investigations Report 95-4203
This retrospective report examines available nutrient, suspended sediment, and pesticide data in surface and ground water in the Connecticut, Housatonic and Thames Rivers Study Unit of the National Water-Quality Assessment Program. The purpose of this study is to improve the understanding of natural and anthropogenic factors affecting water quality in...
Hydrogeology and simulation of ground-water flow in the alluvial aquifer at Louisville, Kentucky
M. A. Lyverse, J.J. Starn, M.D. Unthank
1996, Water-Resources Investigations Report 91-4035
The alluvial aquifer at Louisville, Ky., lies in a valley eroded by glacial meltwater that was later partly filled with outwash sand and gravel deposits. The aquifer is primarily unconfined, and the direction of flow is from the adjacent limestone and shale valley wall toward the Ohio River and major...
Effects of low-flow diversions from the South Wichita River on downstream salinity of the South Wichita River, Lake Kemp, and the Wichita River, North Texas, October 1982-September 1992
Stanley Baldys, Peter W. Bush, Charles C. Kidwell
1996, Water-Resources Investigations Report 95-4288
In parts of the upper reaches of the Red River Basin in Texas, streamflow is characterized by levels of salinity that limit its usefulness for most purposes. Large dissolved solids and dissolved chloride concentrations are caused primarily by flow from natural salt springs in tributaries to the Red River. To...
Sediment transport, particle size, and loads in North Fish Creek in Bayfield County, Wisconsin, water years 1990-91
W. J. Rose, D.J. Graczyk
1996, Water-Resources Investigations Report 95-4222
North Fish Creek is underused as a trout and salmon hatchery despite its excellent water quality. The shifting-sand streambed in the lower 9 miles of the stream inhibits successful spawning and is a poor habitat for macroinvertebrates, the primary food for juvenile trout and salmon. To provide data necessary for...
Ground-water levels and flow at selected study sites in the Walnut Creek Management System Evaluation Area, Boone and Story counties, Iowa, 1991-93
Robert Buchmiller
1996, Water-Resources Investigations Report 95-4109
Data collected from May 1991 through September 1993 to determine seasonal fluctuations in ground-water levels and to estimate directions of ground-water flow in the saturated zone at selected study sites at the Iowa Management Systems Evaluation Area in the Walnut Creek Watershed are presented. The Walnut Creek Watershed is located...
Discharge, water-quality characteristics, and nutrient loads from McKay Bay, Delaney Creek, and East Bay, Tampa, Florida, 1991-1993
Y.E. Stoker, V.A. Levesque, E.M. Fritz
1996, Water-Resources Investigations Report 95-4167
Nutrient enrichment in Tampa Bay has caused a decline in water quality in the estuary. Efforts to reduce the nutrient loading to Tampa Bay have resulted in improvement in water quality from 1981 to 1991. However, Tampa Bay still is onsidered enriched with nutrients. Water quality in East Bay (located...
Technique for estimating magnitude and frequency of peak flows in Maryland
Jonathan J.A. Dillow
1996, Water-Resources Investigations Report 95-4154
Methods are presented for estimating peak-flow magnitudes of selected frequencies for drainage basins in Maryland. The methods were developed by generalized least-squares regression techniques using data from 219 streamflow-gaging stations in and near Maryland, and apply to peak flows with recurrence intervals of 2, 5, 10, 25, 50, 100, and...
Hydrogeology and ground-water quality of glacial-drift aquifers, Leech Lake Indian Reservation, north-central Minnesota
R. J. Lindgren
1996, Water-Resources Investigations Report 95-4077
Among the duties of the water managers of the Leech Lake Indian Reservation in north-central Minnesota are the development and protection of the water resources of the Reservation. The U.S. Geological Survey, in cooperation with the Leech Lake Indian Reservation Business Committee, conducted a three and one half-year study (1988-91)...
Synthesis of natural flows at selected sites in the upper Missouri River basin, Montana, 1928-89
L. E. Cary, Charles Parrett
1996, Water-Resources Investigations Report 95-4261
Natural monthly streamflows were synthesized for the years 1928-89 for 43 sites in the upper Missouri River Basin upstream from Fort Peck Lake in Montana. The sites are represented as nodes in a streamflow accounting model being developed by the Bureau of Reclamation. Recorded and historical flows at most sites...
The effect of discharge and water quality of the Alafia River, Hillsborough River, and the Tampa Bypass Canal on nutrient loading to Hillsborough Bay, Florida
Y.E. Stoker, V.A. Levesque, W. M. Woodham
1996, Water-Resources Investigations Report 95-4107
Techniques to measure discharge and nutrient loads in the tidally affected portions of two major rivers tributary to Tampa Bay, the Alafia River and the Hillsborough River, were developed and tested. Discharge, water quality, and total phosphorus and total nitrogen loads for the period April 1, 1991, through March 31,...
Simulation of subsurface storage and recovery of treated effluent injected in a saline aquifer, St. Petersburg, Florida
D. K. Yobbi
1996, Water-Resources Investigations Report 95-4271
The potential for subsurface storage and recovery of treated effluent into the uppermost producing zone (zone A) of the Upper Floridan aquifer in St. Petersburg, Florida, is being studied by the U.S. Geological Survey, in cooperation with the city of St. Petersburg and the Southwest Florida Water Management District. A...
Infiltration of wastewater effluent in the Santa Cruz River Channel, Pima County, Arizona
Ken Galyean
1996, Water-Resources Investigations Report 96-4021
Infiltration of effluent into the Santa Cruz River channel from water-treatment plants near Tucson, Arizona was studied from March 23, 1990, to September 30, 1993. The study reach extended along a 23-mile stream reach from the water-treatment plants, about 5 miles northwest of central Tucson, downstream to Trico Road, about...
Water quality of the lower Columbia River Basin: Analysis of current and historical water-quality data through 1994
Gregory J. Fuhrer, Dwight Q. Tanner, Jennifer L. Morace, Stuart W. McKenzie, Kenneth A. Skach
1996, Water-Resources Investigations Report 95-4294
The lower Columbia River Basin includes the river basins draining into the Columbia River below Bonneville Dam—the largest of which is the Willamette River. This report presents the results of a study by the U.S. Geological Survey, done in cooperation with the Lower Columbia River Bi-State Water- Quality Program, to...
Trend analysis of selected water-quality data associated with salinity-control projects in the Grand Valley, in the lower Gunnison River basin, and at Meeker Dome, western Colorado
D. L. Butler
1996, Water-Resources Investigations Report 95-4274
To decrease salt loading to the Colorado River from irrigated agriculture, salinity-control projects have been under construction since 1979 by the Bureau of Reclamation and the U.S. Department of Agriculture in the Grand Valley and since 1988 in the lower Gunnison River Basin of western Colorado. In 1980, a salinity-control...
Analysis of nutrients in the surface waters of the Georgia–Florida Coastal Plain study unit, 1970–91
L. K. Ham, H. H. Hatzell
1996, Water-Resources Investigations Report 96-4037
During the early phase of the Georgia-Florida National Water Quality Assessment study, existing information on nutrients was compiled and analyzed in order to evaluate the nutrient concentrations within the 61,545 square mile study unit. Evaluation of the nutrient concentrations collected at surface- water sites between October 1, 1970, and September...
Concentrations and loads of selected trace elements and other constituents in the Rio Grande in the vicinity of Albuquerque, New Mexico, 1994
Todd Kelly, Howard E. Taylor
1996, Open-File Report 96-126
The Pueblo of Isleta and the New Mexico Environment Department have established water-quality standards for the Rio Grande, which flows through Albuquerque, New Mexico. Trace-element concentrations historically have been greater than maximum permissible concentrations allowed by these standards. It is not known if these concentrations are due to sources from...
Evaluation of the streamflow-gaging network of Alaska in providing regional streamflow information
Timothy P. Brabets
1996, Water-Resources Investigations Report 96-4001
In 1906, the U.S. Geological Survey (USGS) began operating a network of streamflow-gaging stations in Alaska. The primary purpose of the streamflow- gaging network has been to provide peak flow, average flow, and low-flow characteristics to a variety of users. In 1993, the USGS began a study to evaluate the...
Hydrogeology of the Quitobaquito Springs and La Abra Plain area, Organ Pipe Cactus National Monument, Arizona, and Sonora, Mexico
R. L. Carruth
1996, Water-Resources Investigations Report 95-4295
Quitobaquito Springs, in Organ Pipe Cactus National Monument near the south end of the northwestward-trending Quitobaquito Hills, are less than 0.25 mile north of the international boundary between the United States and Mexico. The National Park Service is concerned that the natural flow from Quitobaquito Springs might be reduced by...
Hydrogeology and simulation of ground-water flow at the South Well Field, Columbus, Ohio
W. L. Cunningham, E. Scott Bair, W.P. Yost
1996, Water-Resources Investigations Report 95-4279
The City of Columbus, Ohio, operates four radial collector wells in southern Franklin County. The 'South Well Field' is completed in permeable outwash and ice-contact deposits, upon which flow the Scioto River and Big Walnut Creek. The wells are designed to yield approximately 42 million gallons per day; part of...
Direct temperature measurements of deposits, Mount St. Helens, Washington, 1980-1981
Norman G. Banks, Richard P. Hoblitt
1996, Professional Paper 1387
A program of temperature studies of the eruptive products of Mount St. Helens was established May 20, 1980, 2 days after the catastrophic eruption of May 18. Temperature-depth profiles were measured by thermocouple to determine the emplacement temperatures of deposits of the debris avalanche and blast of May 18 and...
Plan of study to quantify the hydrologic relations between the Rio Grande and the Santa Fe Group aquifer system near Albuquerque, central New Mexico
D. P. McAda
1996, Water-Resources Investigations Report 96-4006
The Albuquerque Basin in central New Mexico covers an area of about 3,060 square miles. Ground water from the Santa Fe Group aquifer system of the Albuquerque Basin is the principal source of water for municipal, domestic, commercial, and industrial uses in the Albuquerque area, an area of about 410 square miles....
Variations in land use and nonpoint-source contamination on the Fort Berthold Indian Reservation, west-central North Dakota, 1990-93
Kathleen Macek-Rowland, Robert M. Lent
1996, Water-Resources Investigations Report 96-4007
The effects of land-use activities on the water quality of five streams on the Fort Berthold Indian Reservation were evaluated. The five basinsevaluated were East Fork Shell Creek, Deepwater Creek, Bear Den Creek, Moccasin Creek, and Squaw Creek. East Fork Shell Creek and DeepwaterCreek Basins are located east of Lake...
Temporal changes in the configuration of the water table in the vicinity of the management systems evaluation area site, central Nebraska
John M. Kilpatrick
1996, Water-Resources Investigations Report 94-4173
To improve understanding of the hydrologic characteristics of the shallow aquifer in the vicinity of the Management Systems Evaluation Area site near Shelton, Nebraska, water levels were measured in approximately 130 observation wells in both June and September 1991. Two water-table maps and a water-level-change map were drawn on the...
Stormwater-runoff data, Madison, Wisconsin, 1993-94
R.J. Waschbusch
1996, Open-File Report 95-733
Section 402(P) of the Water Quality Control Act of 1987 requires that municipalities with a population of 100,000 or more obtain permits to discharge stormwater runoff and to control its quality. Monitoring and sampling of stormwater runoff from seven drainage basins in Madison, Wis., was performed from April 1993 through...
