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

184569 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 5924, results 148076 - 148100

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
A digital model of the Floridan Aquifer, north of Tampa, Florida
A.F. Robertson, M. J. Mallory
1977, Water-Resources Investigations Report 77-64
A regional ground-water model of the Floridan aquifer was constructed for an 875-square-mile portion of the rapidly developing area north of Tampa Bay. The digital model was calibrated by comparing observed (March 1974 and May 1975) and computed potentiometric heads. A good comparison was obtained by adjusting leakance and transmissivity....
Flood profiles of the Alafia River, west-central Florida, computed by step-backwater method
A.F. Robertson
1977, Water-Resources Investigations Report 77-74
The Alafia River is a coastal stream that discharges into Hillsborough Bay. The river and its two principal tributaries, North Prong Alafia River and South Prong Alafia River, drain an area of 420 sq mi of predominantly rural land. However, near the coast, urban residential developments are increasing. The flood...
Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Tanana Quadrangle, Alaska
Edward Huntington Cobb
1977, Open-File Report 77-432
These summaries of references are designed to aid in library research on metallic and nonmetallic (other than mineral fuels and construction materials) mineral occurrences in the Tanana quadrangle, Alaska. All references to reports of the Geological Survey, to most reports of the U.S. Bureau of Mines, and to most reports...
Analysis of runoff from small drainage basins in Wyoming
Gordon S. Craig, James G. Rankl
1977, Open-File Report 77-727
A flood-hydrograph study has defined the magnitude and frequency of flood volumes and flood peaks that can be expected from drainage basins smaller than 11 square miles in the plains and valley areas of Wyoming. Rainfall and runoff data, collected for 9 years on a seasonal basis (April through September),...
The Triassic Chitistone Limestone, Wrangell Mountains, Alaska: stressing detailed descriptions of sabkha facies and other rocks in lower parts of the Chitistone and their relations to Kennecott-type copper deposits
Augustus K. Armstrong, E. M. MacKevett
1977, Open-File Report 77-217
Recent investigations show that sabkha deposits were important in the genesis of Kennecott-type copper ore. Massive chalcocite-rich lodes at Kennecott and nearby deposits formed in the lower 110 meters of the Upper Triassic Chitistone Limestone. The Chitistone and superimposed Upper Triassic and Jurassic sedimentary rocks formed in a marine basin...
Calcic soils and calcretes in the southwestern United States
George Odell Bachman, Michael N. Machette
1977, Open-File Report 77-794
Secondary calcium carbonate of diverse origins, 'caliche' of many authors, is widespread in the southwestern United States. 'Caliche' includes various carbonates such as calcic soils and products of groundwater cementation. The term 'caliche' is generally avoided in this report in favor of such terms as calcrete, calcic soils, and pervasively...
Water resources data for California, water year 1976; Volume 1: Colorado River basin, southern Great Basin from Mexican border to Mono Lake basin, and Pacific Slope basins from Tijuana River to Santa Maria River
California District of the Water Resources Division
1977, Water Data Report CA-76-1
Water-resources data for the 1976 water year for California consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; records of water levels in selected observation wells; and selected chemical analyses of ground water. Records for a few pertinent streamflow...
Water resources data for Florida, water year 1976; Volume 1, northeast Florida
Water Resources Division, U.S. Geological Survey
1977, Water Data Report FL-76-1
Water resources data for the 1975 water year in northeast Florida consists of discharge records for 59 streams, stage—only records for 12 streams, elevations for 67 lakes, and daily water level measurements for 98 wells. Water quality data for approximately 220 surface sites and 700 wells are included; as are...
A synoptic survey of trace metals in bottom sediments of the Willamette River, Oregon
David A. Rickert, V. C. Kennedy, S. W. McKenzie, W. G. Hines
1977, Circular 715-F
For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use...