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Page 4615, results 115351 - 115375

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Reconnaissance geology of the Al'Awshaziyah Quadrangle, sheet 26/41 B, Kingdom of Saudi Arabia
G. W. Leo
1984, Open-File Report 84-497
The Al 'Awshaziyah quadrangle (26/41 B) is located between lat 26°30' and 27°00 f N. and long 41°30' and 42°00' E. in the northeastern part of the Arabian Shield. The quadrangle contains surficial Quaternary deposits and locally exposed underlying upper Proterozoic intrusive, volcanic, and volcaniclastic rocks. The oldest rocks, gabbro and...
Maps showing altitude of the potentiometric surface and changes in water levels of the alluvial aquifer in eastern Arkansas, Spring 1983
Joe Edds, Daniel J. Fitzpatrick
1984, Water-Resources Investigations Report 84-4264
The Mississippi River Alluvial Aquifer is a major source of water supply for irrigation in much of eastern Arkansas. Hydrologic maps of the potentiometric surface, water-level changes and depths to water in the aquifer, based on Spring 1983 measurements, are presented. The Mississippi River Alluvial Aquifer is comprised of Quaternary...
Application of a parameter-estimation technique to modeling the regional aquifer underlying the eastern Snake River Plain, Idaho
S. P. Garabedian
1984, Open-File Report 84-461
A nonlinear, least-squares regression technique for the estimation of ground-water flow model parameters was applied to the regional aquifer underlying the eastern Snake River Plain, Idaho. The computer program simulates two-dimensional, steady-state ground-water flow. Hydrologic data for the 1980 water year were used to calculate recharge rates, boundary fluxes, and...
Computation and use of volume-weighted-average concentrations to determine long-term variations of selected water-quality constituents in lakes and reservoirs
Frank C. Wells, Terry L. Schertz
1984, Water-Resources Investigations Report 83-4287
A computer program using the Statistical Analysis System has been developed to perform the arithmetic calculations and regression analyses to determine volume-weighted-average concentrations of selected water-quality constituents in lakes and reservoirs. The program has been used in Texas to show decreasing trends in dissolved-solids and total-phosphorus concentrations in Lake Arlington...
Habitat Suitability Index Models: Western grebe
Henry L. Short
1984, FWS/OBS 82/10.69
The western grebe (Aechmophorus occi denta 1is) "breeds from southeastern Alaska, south-central British Columbia, central Alberta, central Saskatchewan and southwestern Manitoba south to southern Californi a, north-central Utah, southwestern Colorado, southwest~rn and northeastern New Mexico, western Nebraska, northwestern Iowa, and western Minnesota; and locally in Mexico from Chihuahua and Durango...
The Mid-Cretaceous Frontier Formation near the Moxa Arch, southwestern Wyoming
E.A. Mereweather, P.D. Blackmon, J.C. Webb
1984, Professional Paper 1290
The Frontier Formation in the Green River Basin of Wyoming, Utah, and Colorado, consists of sandstone, siltstone, and shale, and minor conglomerate, coal, and bentonite. These strata were deposited in several marine and nonmarine environments during early Late Cretaceous time. At north-trending outcrops along the eastern edge of the overthrust...