Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165505 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 4824, results 120576 - 120600

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Automation of an ion chromatograph for precipitation analysis with computerized data reduction
Arthur G. Hedley, Marvin J. Fishman
1982, Water-Resources Investigations Report 81-78
Interconnection of an ion chromatograph, an autosampler, and a computing integrator to form an analytical system for simultaneous determination of fluoride, chloride, orthophosphate, bromide, nitrate, and sulfate in precipitation samples is described. Computer programs provided with the integrator are modified to implement ionchromatographic data reduction and data storage. The liquid-flow...
Effects of volcanic ash on the benthic environment of a mountain stream, northern Idaho
S.A. Frenzel
1982, Water-Resources Investigations Report 82-4106
The May 18, 1980, eruption of Mount St. Helens deposited about 15 millimeters of volcanic ash on the Big Creek basin in northern Idaho. Much of the uncompacted ash remained on hillsides a year after the eruption. Physical and chemical analyses of water samples from Big Creek collected from December...
Estimates of vertical hydraulic conductivity and regional ground-water flow rates in rocks of Jurassic and Cretaceous age, San Juan Basin, New Mexico and Colorado
P. F. Frenzel, F. P. Lyford
1982, Water-Resources Investigations Report 82-4015
The San Juan structural basin northwestern New Mexico was modeled in three dimensions using a finite-difference, steady-state model. The modeled space was divided into seven layers of square prisms that were 6 miles on a side in the horizontal directions. In the vertical direction, the layers of prisms ranged in...
Ground water in the Twenty-Nine Palms Indian Reservation and vicinity, San Bernardino County, California
J. R. Freckleton
1982, Water-Resources Investigations Report 82-4060
The Twenty-Nine Palms Indian Reservation is in San Bernardino County, California. Movement of ground water in the area is impeded locally by faults which act as ground-water barriers. There are indications that a fault probably crosses the reservation in an east-west direction; such a fault may interfere with ground-water pumping....
Evaluation of the streamflow-data program in Pennsylvania
Herbert N. Flippo Jr.
1982, Water-Resources Investigations Report 82-21
The stream-gaging program in Pennsylvania is subject to budgetary constraints in the next several years. Elimination of those gaging stations that have no current-purpose use and little utility in providing regional flow-characteristic information is the most effective way to reduce costs. The efficient design of a network of gaging stations for obtaining regional information...
Map showing geochemical characteristics of rock samples from the Kalmiopsis Wilderness, southwestern Oregon
Carl A. Carlson, Norman J. Page, David J. Grimes, Reinhard W. Leinz
1982, Miscellaneous Field Studies Map 1240-C
This report summarizes 1,307 semiquantitative chemical analyses of rocks collected to aid int he evaluation of the mineral resources of the Kalmiopsis Wilderness, Oreg. Chemical analyses and sample location maps are presented by Grimes, Leinz, and Speckman (1981). The area is located in the Kilamath Mountains geoporphic province of southwestern...
Geologic, geochemical and mineral resource potential map of the Piney Creek Wilderness, Stone and Barry counties, Missouri
Walden P. Pratt, Ralph L. Erickson, Kenneth C. Thomson, Clarence Ellis
1982, Miscellaneous Field Studies Map 1494
There is no evidence of significant metallic-mineral deposits in the rock units that are exposed at the surface in the wilderness, but there may be some potential for mineral deposits of two different types at depths from 400ft (120 m) to more than 2,100 ft (640 m) below the surface....
Mineral resource potential map of the Vermilion Cliffs-Paria Canyon instant study area, Coconino County, Arizona, and Kane County, Utah
Alfred L. Bush, Michael Lane
1982, Miscellaneous Field Studies Map 1475-D
In general, the mineral potential of the study area is low; in the past the area has yielded only several hundred tons of uranium ore, and there have been a number of unsuccessful efforts to produce gold. The generally small uraniferous deposits are in the Chinle Formation, mostly in the basal...
Water resources data for Florida, water year 1981; Volume 1. Northeast Florida
Water Resources Division, U.S. Geological Survey
1982, Water Data Report FL-81-1
Water resources data for the 1981 water year for northeast Florida consist of records of stage, discharge, and water quality of streams; elevation and water quality of lakes and reservoirs; water levels and water quality of wells; and discharge and water quality of springs. Additional water data were collected at...