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Page 4301, results 107501 - 107525

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Simulation of the ground-water flow system and proposed withdrawals in the northern part of Vekol Valley, Arizona
K.J. Hollett, J.R. Marie
1987, Water-Resources Investigations Report 86-4340
Pursuant to the Ak-Chin Indian Community Water Rights Settlement Act (Public Law 95-328-enacted on July 28, 1978) a study was undertaken to assess the effect of proposed groundwater withdrawal from Federal lands near the reservation. The first area to be evaluated was the northern part of the Vekol Valley. The...
Hydrology of the White Tail Butte area, northern Campbell County, Wyoming
M.E. Lowry, J.G. Rankl
1987, Water-Resources Investigations Report 82-4117
Quantity of runoff and peak discharge from one small basin in the White Tail Butte area, determined from a calibrated rainfall-runoff model, is less than the quantity computed using results of a regional study. The difference is caused by the extensive beds of exposed, permeable clinker in the area. Potentiometric...
Discharge ratings for control gates at Mississippi River lock and dam 21, Quincy, Illinois
A.J. Heinitz
1987, Water-Resources Investigations Report 87-4155
The water levels of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at the locks and dams. Discharge ratings for the gates on Lock and Dam 21, at Quincy, Illinois, were developed from current meter discharge measurements made in the forebays...
Effect of grid size on digital simulation of ground-water flow in the southern High Plains of Texas and New Mexico
R. R. Luckey, D.M. Stephens
1987, Water-Resources Investigations Report 87-4085
Three models of the aquifer in the southern High Plains were compared to determine the effect of grid size on simulated water levels. The first model, calibrated prior to this study, had 10-mi grid spacing. The mean difference between the simulated and measured pre-development water levels in this model was...
Habitat Suitability Index Models: American alligator
John D. Newsom, Ted Joanen, Rebecca J. Howard
1987, FWS/OBS 82/10.136
A review and synthesis of existing information were used to develop a model for evaluating American alligator habitat quality. The model is applicable in marshes along the northern Gulf of Mexico. It is scaled to produce an index between 0 (unsuitable habitat) and 1.0 (optimal habitat). Habitat suitability index models...
Habitat Suitability Index Models: Black Bear, Upper Great Lakes Region
Lynn L. Rogers, Arthur W. Allen
1987, FWS/OBS 82/10.144
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the black bear (Ursus americanus). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Statistical, graphical, and trend summaries of selected water-quality and streamflow data from the Trinity River near Crockett, Texas, 1964-85
Richard L. Goss
1987, Open-File Report 87-393
Statistical and graphical -.summaries of selected water-quality and'" streamflow data collected between 1964 and 1985 at the Trinity River near" Crockett are presented to document the baseline water quality of the Trinity River at this location. Dissolved oxygen exceeded 7.0 milligrams per liter in more than 50 percent- of the...
Flood characteristics of the Buffalo River at Tyler Bend, Arkansas
Braxtel L. Neely
1987, Water-Resources Investigations Report 87-4180
The Buffalo River is located in the Ozark Mountains in north-central Arkansas. Tyler Bend is on the Buffalo River about 1.5 miles upstream from U.S. Highway 65. The National Park Service is developing several recreational park sites along this scenic river. The magnitude, frequency, duration and velocities of floods are...