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Page 4033, results 100801 - 100825

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Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1991
S. J. Kalkhoff, R.L. Kuzniar
1994, Open-File Report 94-56
Hydrologic data were collected in the Big Spring Basin located in Clayton County, Iowa, during the 1991 water year. The data were collected by the U.S. Geological Survey in cooperation with the Iowa Department of Natural Resources, Geological Survey Bureau, to provide information on variation and movement of agricultural chemicals...
Bibliography of selected publications approved by the U.S. Geological Survey on the water resources of New Mexico, 1975-93
O.M. Sandoval
1994, Open-File Report 94-361
This bibliography of about 500 references authored by U.S. Geological Survey employees has been compiled to assist in the study and development of water resources. The citations are dated from January 1975 to December 1993. Each citation is numbered and indexed by geographic location and discipline. Selected citations are indexed...
Major ions, nutrients, and trace elements in the Mississippi River near Thebes, Illinois, July through September 1993
Howard E. Taylor, Ronald C. Antweiler, Terry I. Brinton, David A. Roth, John A. Moody
1994, Circular 1120-D
Extensive flooding in the upper Mississippi River Basin during summer 1993 had a significant effect on the water quality of the Mississippi River. To evaluate the change in temporal distribution and transport of dissolved constituents in the Mississippi River, six water samples were collected by a discharge-weighted method from July...
Map showing major drainage basins and stream-gaging stations in Massachusetts
J. C. Rader
1994, Open-File Report 94-380
This map report shows the 27 major drainage basins, locations of the 71 permanent stream- gaging stations, and the primary rivers, lakes, and reservoirs of Massachusetts. These features are presented at a scale of 1:400,000 (map size about 36 by 24 inches). The map also lists uses of...
Rainfall, evapotranspiration, total soil-water potential, and soil-water content at a sagebrush site and a replacement-vegetation site near Fort Defiance, Arizona, 1989-91
C. L. Thomas
1994, Open-File Report 94-43
The Navajo Nation Forestry Department established a growth of four species of native grasses and two species of native shrubs on formerly sagebrush- covered land about 6 miles north of Fort Defiance, Arizona. The native grasses and shrubs grew under conditions of natural precipitation and soil fertility. This provided alternate...
Methods for estimating magnitude and frequency of floods in the southwestern United States
B. E. Thomas, H. W. Hjalmarson, S. D. Waltemeyer
1994, Open-File Report 93-419
Methods have been developed for estimating magni- tude and frequency of floods at gaged and ungaged sites on streams in the southwestern United States. Estimating equations for ungaged sites that apply to small drainage basins were developed by transferring information from ungaged sites using techniques such as multiple regression...
Using analytical services at the National Water Quality Laboratory
L.K. Pratt
1994, Open-File Report 94-26
The National Water Quality Laboratory (NWQL) offers a variety of analytical services for the determination of constituents in samples of water, sediment, and biological material. As technology has advanced, many new methods have been introduced but not always incorporated into plans and schedules developed in the districts. The strengths and...
Cretaceous rocks from southwestern Montana to southwestern Minnesota, northern Rocky Mountains, and Great Plains
T. S. Dyman, W. A. Cobban, J. E. Fox, R. H. Hammond, D. J. Nichols, W. J. Perry Jr., K. W. Porter, D. D. Rice, D. R. Setterholm, G. W. Shurr, R. G. Tysdal, J. C. Haley, E. B. Campen
1994, Book chapter, Perspectives on the eastern margin of the Cretaceous Western Interior basin
In Montana, Wyoming, North and South Dakota, and Minnesota, Cretaceous strata are preserved in the asymmetric Western Interior foreland basin. More than 5,200 m (17,000 ft) of Cretaceous strata are present in southwestern Montana, less than 300 m (1,000 ft) in eastern South Dakota. The asymmetry resulted from varying rates...
Salinity and temperature effects on chronic toxicity of 2,4-dinitrophenol and 4-nitrophenol to sheepshead minnows (Cyprinodon variegatus)
T.K. Linton, F.L. Mayer, T.L. Simon, J.A. Malone, L. L. Marking
1994, Environmental Toxicology and Chemistry (13) 85-92
Toxicity tests (28-d early-life-stage) were conducted to determine the effects of nine combinations of salinity (15, 20, 25 ppt) and temperature (22, 27, 32°C) on the toxicity of 2,4-dinitrophenol (2,4-DNP) and 4-nitrophenol (4-NP) to sheepshead minnows (Cyprinodon variegatus). The highest tested concentration having no observed effect (NOEC) on mortality and...
National Water-Quality Assessment Program - The Upper Mississippi River Basin
J. R. Stark
1994, Open-File Report 94-101
In 1991, the U.S. Geological Survey (USGS), U.S. Department of the Interior, began a National Water-Quality Assessment (NAWQA) program. The long-term goals of the NAWQA program are to describe the status and trends of the quality of a large, representative part of the Nation’s surfaceand ground-water resources, and to identify...