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Drainage areas of surface water bodies of eastern Maine coastal river basins
Richard A. Fontaine
1982, Open-File Report 78-556-H
The report contains drainage-area values for: lakes and ponds included in the MIDAS (Maine Informational Display Analysis System) File 906-Z, streams that drain an area greater than 25 square miles, dam sites, and locations where hydrologic data are available. Supplemental information includes State and Federal location systems used to identify...
Drainage areas of surface water bodies of the St. John River basin in northern Maine
Richard A. Fontaine, Emily Herrick, Nancy Norman
1982, Open-File Report 78-556-G
The report contains drainage-area values for: lakes and ponds included in the MIDAS (Maine Informational Display Analysis System) File 906-Z, streams that drain an area greater than 25 square miles, dam sites, and locations where hydrologic data are available. Supplemental information includes State and Federal location systems used to identify...
Floods of October 1977 in southern Arizona and March 1978 in central Arizona
B. N. Aldridge, J.H. Eychaner
1982, Open-File Report 82-687
Major floods occurred in October 1977 and March 1978 in Arizona. As much as 14 inches of rain fell during October 6-9, 1977, over the mountains of southern Arizona and northern Mexico and caused the highest discharge since at least 1892 on the Santa Cruz River upstream from Tucson. The...
Distributed routing rainfall-runoff model; version II
W.M. Alley, P. E. Smith
1982, Open-File Report 82-344
A computer program of a watershed model for routing storm runoff through a branched system of pipes and (or) natural channels using rainfall as input is described. The model provides detailed simulation of storm-runoff periods selected by the user and a daily soil-moisture accounting between storms. A drainage basin is...
An empirical method for determining average soil infiltration rates and runoff, Powder River structural basin, Wyoming
James G. Rankl
1982, Water-Resources Investigations Report 81-76
This report describes a method to estimate infiltration rates of soils for use in estimating runoff from small basins. Average rainfall intensity is plotted against storm duration on log-log paper. All rainfall events are designated as having either runoff or nonrunoff. A power-decay-type curve is visually fitted to separate the...
Ground-water levels in selected well fields and in west-central Florida, May 1982
G. L. Barr
1982, Open-File Report 82-867
The water table in the surficial aquifer and the potentiometric surface of the Floridan aquifer in a 1,700-square-mile area in west-central Florida are mapped semiannually by the U.S. Geological Survey. Maps are based on water levels measured in wells each May to coincide with the seasonal low levels and each...
Multi-event urban runoff quality model
W.M. Alley, P. E. Smith
1982, Open-File Report 82-764
A computer model is presented for simulating the quality of surface runoff from urban watersheds. The model can simulate impervious area, pervious area, and precipitation contributions to runoff quality as well as the effects of street sweeping and (or) detention storage. Within-storm variations of runoff quality are simulated for user-specified...
Tilt networks of Mount Shasta and Lassen Peak, California
Daniel Dzurisin, Daniel J. Johnson, T.L. Murray, Barbara Myers
1982, Open-File Report 82-670
In response to recent eruptions at Mount St. Helens and with support from the USGS Volcanic Hazards Program, the Cascades Volcano Observatory (CVO) has initiated a program to monitor all potentially-active volcanoes of the Cascade Range. As part of that effort, we installed tilt networks and obtained baseline measurements at...
Automation of an ion chromatograph for precipitation analysis with computerized data reduction
Arthur G. Hedley, Marvin J. Fishman
1982, Water-Resources Investigations Report 81-78
Interconnection of an ion chromatograph, an autosampler, and a computing integrator to form an analytical system for simultaneous determination of fluoride, chloride, orthophosphate, bromide, nitrate, and sulfate in precipitation samples is described. Computer programs provided with the integrator are modified to implement ionchromatographic data reduction and data storage. The liquid-flow...
Methodologies for extraction of dissolved inorganic carbon for stable carbon isotope studies: Evaluation and alternatives
Afifa Afifi Hassan
1982, Water-Resources Investigations Report 82-6
The gas evolution and the strontium carbonate precipitation techniques to extract dissolved inorganic carbon (DIC) for stable carbon isotope analysis were investigated. Theoretical considerations, involving thermodynamic calculations and computer simulation pointed out several possible sources of error in delta carbon-13 measurements of the DIC and demonstrated the need for experimental...