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Impact of flow regulation and power plant effluents on the flow and temperature regimes of the Chattahoochee River - Atlanta to Whitesburg, Georgia
Robert E. Faye, Harvey E. Jobson, Larry F. Land
1978, Open-File Report 78-528
A calibrated and verified transient flow temperature model was used to evaluate the effects of flow regulation and powerplant loadings on the natural temperature regime of the Chattahoochee River in northeast Georgia. Estimates were made of both instantaneous and average natural temperatures in the river during an eight-day period in...
Ore controls at the Mahd adh Dhahab gold mine, Kingdom of Saudi Arabia
Ronald G. Worl
1978, Open-File Report 78-778
Mahd adh Dhahab is the largest of numerous ancient gold mines scattered through the Precambrian shield of Saudi Arabia and the only one with recent production. Free gold and silver, tellurides, pyrite, galena, sphalerite, and chalcopyrite are in and associated with quartz veins and quartz veinlet stockworks. Country rocks consist...
Mallets Creek Marsh, Lake Champlain: A plant-nutrient study
John T. Turk
1978, Open-File Report 78-462
Nitrogen and phosphorus dissolved in the interstitial water of Mallets Creek Marsh sediments supply about 42 percent of the nitrogen and about 9 percent of the phosphorus used by rooted macrophytes within the marsh. These percentages may become larger during middle and late summer, when water inflow to the marsh...
Calibration of a simple oilspill trajectory model using the Argo Merchant spill
Timothy Wyant
1978, Open-File Report 78-334
An oil spill risk analysis was conducted to determine the relative envionmental hazards of developing oil in different regions of the Eastern Gulf of Mexico Outer Continental Shelf lease area. The study analyzed the probability of spill occurrence, likely paths of the spills, and locations in space and time of...
Least-squares refinement of powder diffraction data for unit cell parameters: Program listing for DEC 10 computer
George Van Trump, Phoebe L. Hauff
1978, Open-File Report 78-431
This FORTRAN computer program is a time-sharing version of the classic program of Appleman and Evans (1973) and Evans, Appleman, and Handwerker (1963), which indexes powder patterns and refines unit-cell dimensions. The program, originally written to be processed in batch mode for an IBM computer, was modified to run in...
Progress toward a ground-water-quality monitoring network for Idaho
R.L. Whitehead
1978, Open-File Report 78-786
A ground-water-quality monitoring network is being designed for Idaho. The primary objectives of the network are to (1) determine the present quality of the State's ground water, (2) provide continual monitoring of groundwater quality for water-management purposes, and (3) serve as a warning system of undesirable changes in ground-water quality. Data...