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Page 4525, results 113101 - 113125

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Survey of Fena Reservoir, Island of Guam: Limnological reconnaissance
J. W. LaBaugh
1985, Water-Resources Investigations Report 83-4241
During the limnological reconnaissance of Fena Reservoir, samples of the water columns and bottom sediment were obtained and analyzed at five locations within the reservoir. Major ion analyses of filtered surface water indicated that calcium and bicarbonate are the dominant cation and anion in the reservoir. Thermal stratification was recorded...
Water-resources monitoring in the Cottonwood Creek area, Shasta and Tehama counties, California, 1982-83
R. P. Fogelman, K. D. Evenson
1985, Water-Resources Investigations Report 84-4187
The Cottonwood Creek study area in the Redding basin, California , contains a network of wells established to provide baseline information on ground-water levels and quality prior to the completion of two proposed dams, one on Cottonwood Creek and one on South Fork Cottonwood Creek. Analysis of monthly ground-water levels...
Chemical quality of ground water in Yolo and Solano counties, California
K. D. Evenson
1985, Water-Resources Investigations Report 84-4244
Ground-water-quality conditions were investigated in Yolo and Solano Counties during the summers of 1980 and 1981 by sampling 188 representative wells. Chemical analyses of the water samples show that the ground water is suitable for domestic and most agricultural purposes. Water samples from wells near the Sacramento River generally contained...
Simulated effects of projected pumping on the availability of freshwater in the Evangeline Aquifer in an area southwest of Corpus Christi, Texas
George E. Groschen
1985, Water-Resources Investigations Report 85-4182
This study is an investigation of the continued availability of freshwater in the Evangeline aquifer along the Texas Gulf Coast and the potential for degradation of the water quality by salinewater intrusion. Recharge to the aquifer occurs by the infiltration of precipitation in the outcrop area and by cross-formational flow...
Water-quality of Lake Conroe on the West Fork San Jacinto River, southeastern Texas
Marvin W. Flugrath, Freeman L. Andrews, Emma McPherson
1985, Water-Resources Investigations Report 85-4301
Thermal stratification in Lake Conroe, Texas usually begins to develop in March and persists until October. Thermal stratification has resulted in significant seasonal and areal variations in the concentrations of dissolved oxygen, dissolved iron, dissolved manganese, total inorganic nitrogen, and total phosphorus. Volume-weighted-average concentration of dissolved solids generally was < 120...
Water resources and effects of development in Hernando County, Florida
J. D. Fretwell
1985, Water-Resources Investigations Report 84-4320
In spite of the hill and valley terrain in the Brooksville Ridge area of Hernando County, Florida, little surface drainage occurs within the county. Recharge to the Floridan aquifer system occurs as infiltration of precipitation within the county or as ground-water flow from Sumter County to the east and Pasco...
Estimating annual suspended-sediment loads in the northern and central Appalachian Coal region
G. F. Koltun
1985, Water-Resources Investigations Report 85-4215
Multiple-regression equations were developed for estimating the annual suspended-sediment load, for a given year, from small to medium-sized basins in the northern and central parts of the Appalachian coal region. The regression analysis was performed with data for land use, basin characteristics, streamflow, rainfall, and suspended-sediment load for 15 sites...
Cost effectiveness of the stream-gaging program in Pennsylvania
H.N. Flippo, T.E. Behrendt
1985, Water-Resources Investigations Report 85-4077
This report documents a cost-effectiveness study of the stream-gaging program in Pennsylvania. Data uses and funding were identified for 223 continuous-record stream gages operated in 1983; four are planned for discontinuance at the close of water-year 1985; two are suggested for conversion, at the beginning of the 1985 water year,...
Significance of tourmaline-rich rocks in the Grenville Complex of St. Lawrence County, New York
C. Ervin Brown, Robert A. Ayuso
1985, Bulletin 1626-C
Feldspathic quartzite and metapelite of Middle Proterozic age north of Gouverneur, N.Y., contain abundant dravite-uvite (magnesian tourmaline). These rocks, more than 1,000 feet thick, are regionally metamorphosed to the upper amphibolite facies, are pyritic, and locally contain porphyroblastic scapolite. The rocks are underlain by talctremolite schist and a thick sequence...