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Page 4917, results 122901 - 122925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Toxicity of Mount St. Helens ash leachate to a blue-green alga
Diane M. McKnight, Gerald L. Feder, Eric A. Stiles
1981, Circular 850-F
During several periods of volcanic-ash eruption at Mount St. Helens, Wash., (March 30, May 25-26, May 30-June 2, and June 12-13, 1980) strong winds from the north occurred at high altitudes. As a result, the volcanic ash fell some 50 miles to the south in the Bull Run watershed, the...
Selected hydrologic relationships for Soldier Creek, northeastern Kansas
William J. Carswell Jr.
1981, Water-Resources Investigations Report 81-8
Hydrologic data from Soldier Creek basin were compared with relations from statewide data. The quantity and quality of streamflow were affected mostly by soils, slopes, and land use. Average annual precipitation during the study (196476) was 35.12 inches, or 2.3 percent greater than the long-term (1929-76) average. The average streamflow...
Organic substances in water
Phillip E. Greeson, editor(s)
1981, Circular 848-C
This is the third of several compilations of briefing papers on water quality by the U.S. Geological Survey. Each briefing paper is prepared in a simple, nontechnical, easy-to-understand manner. This U.S. Geological Survey Circular contains papers on selected organic substances in water. Briefing papers are included on ' Why study...
Water-quality assessment of the Merced River, California, in the 1977 water year
Stephen K. Sorenson, Ray J. Hoffman
1981, Water-Resources Investigations Report 80-75
Water-quality conditions in the Merced River in California were sampled four times during the 1977 water year at 12 stations on the river and its major impoundments. Samples taken at the record or near-record low flows of the 1976-77 drought, showed that calcium and bicarbonate were the predominant ions in...
Potentiometric surface of the Floridan Aquifer, St. Johns River Water Management District and vicinity, Florida, May 1981
George R. Schiner, Eugene C. Hayes
1981, Open-File Report 81-1052
This map presents the potentiometric surface of the Floridan aquifer in the St. Johns River Water Management District and vicinity for May 1981. The Floridan aquifer is the principal source of potable water in the area. Water-level measurements were made in approximately 1,000 wells and at several springs. The potentiometric...
Maps Showing Ground-Water Conditions in the San Francisco Peaks Area, Coconino County, Arizona - 1979
Cynthia L. Appel, Donald J. Bills
1981, Open-File Report 81-914
INTRODUCTION The San Francisco Peaks area includes about 2,300 mi2, of which about 500 mi2 is in the Navajo Indian Reservation, in north-central Arizona. Ground-water development has been slight except for the public-supply wells for Flagstaff and domestic wells in Fort Valley, Pitman Valley, and the area west of Elden Mountain....