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Page 4428, results 110676 - 110700

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Not all publications have extents, not all extents are completely accurate
Bedrock topography of northwest Iowa
R.E. Hansen, D. L. Runkle
1986, IMAP 1726
Bedrock in Iowa (Hershey, 1969) generally is overlain by deposits of glacial drive and alluvium. The drift, consisting of glacial till and glacial outwash, ranges in thickness from zero to more than 500 feet in western Iowa; the alluvium in stream valleys ranges in thickness from less than 1 foot...
Effect of urban stormwater runoff on ground water beneath recharge basins on Long Island, New York
H. F. Ku, D. L. Simmons
1986, Water-Resources Investigations Report 85-4088
Urban stormwater runoff was monitored during 1980-82 to investigate the source, type, quantity, and fate of contaminants routed to the more than 3,000 recharge basins on Long Island and to determine whether this runoff might be a significant source of contamination to the groundwater reservoir. Forty-six storms were monitored at...
Estimating magnitude and frequency of floods for Wisconsin urban streams
D.H. Conger
1986, Water-Resources Investigations Report 86-4005
Equations for estimating magnitude and frequency of floods for Wisconsin streams with drainage basins containing various amounts of existing or projected urban development were developed by flood-frequency and multiple-regression analyses. Multiple-regression techniques were used to develop equations for estimating flood frequencies at ungaged urban sites. The flood-frequency equations are based on...
Comparison of flood frequency estimates from synthetic and observed data on small drainage areas in Mississippi
B.E. Colson
1986, Water-Resources Investigations Report 86-4034
In 1964 the U.S. Geological Survey in Mississippi expanded the small stream gaging network for collection of rainfall and runoff data to 92 stations. To expedite availability of flood frequency information a rainfall-runoff model using available long-term rainfall data was calibrated to synthesize flood peaks. Results obtained from observed annual...
Exploration for areas suitable for ground-water development, central Connecticut Valley lowlands, Massachusetts
B. P. Hansen
1986, Water-Resources Investigations Report 84-4106
Drilling and geophysical borehole logs for a 25-sq-mi section of the Connecticut River valley lowlands area of Amherst, Hadley, and Sunderland, Massachusetts, indicate that the area is mostly underlain by fine-grained lacustrine deposits. Nine test wells ranging in depth from 100 to 303 ft completely penetrate the unconsolidated valley fill....
Ground-water movement and effects of coal strip mining on water quality of high-wall lakes and aquifers in the Macon-Huntsville area, north-central Missouri
D. C. Hall, R. E. Davis
1986, Water-Resources Investigations Report 85-4102
Glacial drift and Pennsylvanian bedrock were mixed together forming spoil during pre-reclamation strip mining for coal in north-central Missouri. This restructuring of the land increases the porosity of the material, and increases aqueous concentrations of many dissolved constituents. Median sodium and bicarbonate concentrations were slightly greater, calcium 5 times greater,...
A description of the hydrologic system and the effects of coal mining on water quality in the East Fork Little Chariton River and the alluvial aquifer between Macon and Huntsville, north-central Missouri
D. C. Hall
1986, Water-Resources Investigations Report 86-4160
The quality of surface and groundwater has been affected by abandoned strip mines and by abandoned underground mines in a 110-sq mi subbasin of the East Fork Little Chariton River. More than 14% of the area was strip mined for coal before 1979. The hydrologic system in the area was...
Directions and rates of ground-water movement in the vicinity of Kesterson Reservoir, San Joaquin Valley, California
R.J. Mandle, A.L. Kontis
1986, Water-Resources Investigations Report 86-4196
A three-dimensional groundwater flow model was used to simulate groundwater flow for a 124 sq mi area in the vicinity of Kesterson Reservoir in the San Joaquin Valley, California. Available data were used to calculate a probable range of groundwater flow rates, but calibration and sensitivity analysis were not done...
Discharge ratings for control gates at Mississippi River Lock and Dam 13, Fulton, Illinois
Albert J. Heinitz
1986, Water-Resources Investigations Report 86-4134
The water level 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 13, at Fullerton, Illinois, were developed from current-meter discharge measurements made in the forebays of...
Discharge ratings for control gates at Mississippi River Lock and Dam 22, Saverton, Missouri
Albert J. Heinitz
1986, Water-Resources Investigations Report 86-4137
The water level of the navigation pools on the Mississippi River are maintained by the operation of tainted and roller gates at the locks and dams. Discharge ratings for the gates on Lock and Dam 22, at Saverton, Missouri, were developed from current-meter discharge measurements made in the forebays of...
Discharge ratings for control gates at Mississippi River Lock and Dam 16, Muscatine, Iowa
Albert J. Heinitz
1986, Water-Resources Investigations Report 86-4136
The water level of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at the lock and dams. Discharge ratings for the gates on Lock and Dam 16, at Muscatine, Iowa, were developed from current-meter discharge measurements made in the forebays of...
Evaluation of streams in selected communities for the application of limited-detail study methods for flood-insurance studies
Ernest D. Cobb
1986, Water-Resources Investigations Report 85-4098
The U.S. Geological Survey evaluated 2,349 communities in 1984 for the application of limited-detail flood-insurance study methods, that is, methods with a reduced effort and cost compared to the detailed studies. Limited-detail study methods were found to be appropriate for 1,705 communities, while detailed studies were appropriate for 62 communities...
Selenium concentrations in leaf material from Astragalus Oxyphysus (diablo locoweed) and Atriplex Lentiformis (quail bush) in the interior Coast Ranges and the western San Joaquin Valley, California
J. A. Izbicki, T. F. Harms
1986, Water-Resources Investigations Report 86-4066
Leaf material from selenium accumulating plants was collected and analyzed for selenium to obtain a relative indication of selenium concentrations in soils and identify sites suitable for further soil study. Selenium concentrations of 14 samples of leaf material from Astragalus oxyphysus ranged from 0.08 to 3.5 microg/g dry weight and...