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Page 4332, results 108276 - 108300

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Selected hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin in Arizona, Colorado, Utah, and Wyoming: Excluding the San Juan Basin
J. F. Weigel
1987, Water-Resources Investigations Report 86-4170
Data for hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin, excluding the San Juan Basin, have been collected by government agencies, private industry, property owners, and other sources. These data were compiled and analyzed so that they would be available for use by hydrologists, earth...
Reflections on writing hydrologic reports
Perry G. Olcott
1987, Open-File Report 87-398
Reporting of scientific work should be characterized by a logical argument that is developed through presentation of the problem, tabulation and display of data pertinent to the problem , and testing and interpretation of the data to prove hypotheses that address the problem. Organization of the report is vital to...
Simulation of flood hydrographs for Georgia streams
Ernest J. Inman
1987, Water Supply Paper 2317
Flood hydrographs are needed for the design of many highway drainage structures and embankments. A method for simulating these flood hydrographs at ungaged sites in Georgia is presented in this report. The O'Donnell method was used to compute unit hydrographs and lagtimes for 355 floods at 80 gaging stations. An...
Roughness coefficients for densely vegetated flood plains
G.J. Arcement, V.R. Schneider
1987, Water-Resources Investigations Report 83-4247
Although much research has been done on Manning 's roughness coefficients for stream channels, very little has been done on the selection of roughness values for densely vegetated flood plains. In this report four method for determining roughness coefficients for flood plains are examined and evaluated. Field data were collected...
Water resources data for Arkansas, water year 1986
T.E. Lamb, J.E. Porter, B.F. Lambert, J. Edds
1987, Water Data Report AR-86-1
Water resources data for the 1986 water year for Arkansas consist of records of gage height, discharge, and water quality of streams; water quality of lakes; and water levels and water quality of wells. This report contains discharge records for 48 gaging stations; water quality for 154 stations, 73 partial-record stations, 5 observation...
A conceptual framework for ground-water solute-transport studies with emphasis on physical mechanisms of solute movement
Thomas E. Reilly, O. Lehn Franke, Herbert T. Buxton, Gordon D. Bennett
1987, Water-Resources Investigations Report 87-4191
Analysis of solute transport in groundwater systems involves a complex, multi-discipline study that requires intensive and costly investigation. Groundwater contamination, particularly from point sources, has been growing in importance in recent years. This report examines the physical mechanisms of solute transport, advection and dispersion, and explains how they relate to...
Hydrologic and geochemical monitoring in Long Valley Caldera, Mono County, California, 1985
C. D. Farrar, M.L. Sorey, S.A. Rojstaczer, C. J. Janik, T. L. Winnett, M. D. Clark
1987, Water-Resources Investigations Report 87-4090
Hydrologic and geochemical monitoring, to detect changes caused by magmatic and tectonic processes in the Long Valley caldera has continued through 1985. The monitoring included the collection of the following types of data: chemical and isotopic composition of water and gases from springs, wells, and steam vents; temperatures in wells,...
Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 1
C. R. Bossong, W. F. Harris
1987, Water-Resources Investigations Report 87-4068
This report delineates and describes the geohydrology and susceptibility of the major aquifers to contamination in Area 1 - Colbert, Franklin, Lauderdale, Lawrence, Limeston, Madison, and Morgan Counties. Most of the area is underlain by a Mississippian carbonate sequence that includes two major aquifers, the Tuscumbia-Fort Payne aquifer and the...
Development of ground-water resources in the Orange County area, Texas and Louisiana, 1980-Spring of 1985
C.W. Bonnet, James Frank Williams III
1987, Water-Resources Investigations Report 87-4158
This report updates ground-water information pertaining to the lower unit of the Chicot aquifer in the Orange County area, Texas and Louisiana. The period of data collection was from 1980 to the spring of 1985. Some data collected prior to 1980 are presented to establish long-term trends and relations. The...
A review of surface-water sediment fractions and their interactions with persistent manmade organic compounds
P.J. Witkowski, J. A. Smith, T. V. Fusillo, C. T. Chiou
1987, Circular 993
This paper reviews the suspended and surficial sediment fractions and their interactions with manmade organic compounds. The objective of this review is to isolate and describe those contaminant and sediment properties that contribute to the persistence of organic compounds in surface-water systems. Most persistent, nonionic organic contaminants, such as the...