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

16495 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 622, results 15526 - 15550

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Ground-water exploration in the Bosque del Apache Grant, Socorro County, New Mexico
James B. Cooper
1968, Open-File Report 68-63
Test drilling along the Rio Grande in the Bosque del Apache Grant in Socorro County, New Mexico has shown that the area is hydrologically complex and that the quality of the ground water varies from saline to fresh within short distances both laterally and vertically. Nearly all of the riverside...
Color photographs for water resources studies
William J. Schneider
1968, Photogrammetric Engineering (34) 257-262
Air-photo interpretation is very well suited to water resources studies where limited observations of hydrologic data must be extended to regional characteristics for large areas. It is also useful in monitoring the hydrologic regimen of an area to detect possible changes. Color aerial photography is generally superior to black-and-white photography...
Microcanonical ensembles of river nets
Adrian E. Scheidegger
1968, International Association of Scientific Hydrology - Bulletin (13) 87-90
It is shown that a thermodynamic analogy can be set up for structurally cyclic as well as for noncyclic river nets that satisfy Horton's law of stream numbers. In the latter case, the microcanonical formalism of statistical thermodynamics has to be used. ...
Uranium disequilibrium in groundwater: An isotope dilution approach in hydrologic investigations
J.K. Osmond, H.S. Rydell, M. I. Kaufman
1968, Science (162) 997-999
The distribution and environmental disequilibrium patterns of naturally occurring uranium isotopes (U234 and U238) in waters of the Floridan aquifer suggest that variations in the ratios of isotopic activity and concentrations can be used quantitatively to evaluate mixing proportions of waters from differing sources. Uranium is probably unique...
Use of dye tracers to collect hydrologic data in Oregon
D.D. Harris, R.B. Sanderson
1968, Water Resources Bulletin (4) 51-68
Dye tracers have been used in Oregon in the Collection of hydrologic data on 2,350 miles of stream channels in the Long Tom, Umpqua, Willmette, and John Day River basins, and in the Carmen‐Smith power tunnel. These investigations demonstrated the usefulness, of dye tracers for determining: (1) estimates of traveltimes and travel...
Ground-water flow related to streamflow and water quality
Wayne A. Van Voast, R.P. Novitzki
1968, Water Resources Research (4) 769-775
A ground-water flow system in southwestern Minnesota illustrates water movement between geologic units and between the land surface and the subsurface. The flow patterns indicate numerous zones of ground-water recharge and discharge controlled by topography, varying thicknesses of geologic units, variation in permeabilities, and the configuration of the basement rock...
Reforestation with conifers-its effect on streamflow in central New York
Gordon Roundy Ayer
1968, JAWRA (4) 13-24
During the early 1930's, more than 340,000 acres of abandoned farmland in New York State were purchased by the State Conservation Department for the planting, growing, and harvesting of trees. Since then, this land has developed from a heavy cover of weeds and brush into dense coniferous woodlands with trees averaging well over 30...
Floods in Maline Creek Basin, St. Louis County, Missouri
Donald W. Spencer, Leland D. Hauth
1968, Report
The rapid growth of suburban St. Louis presents problems in the economic development of flood plains within the area. The U.S. Geological Survey in cooperation with the Metropolitan St. Louis Sewer District has a project to study the hydrology of five major drainage basins within the area of responsibility of...
Well logging in ground‐water hydrology
W.S. Keys
1968, Groundwater (6) 10-18
In 1966 more than 50 billion gallons of water was pumped daily from an estimated 10 to 15 million water wells in the United States. This was more than one‐sixth of the national withdrawal of water. On the basis of past rates of increase, a much greater future use of ground water is suggested. Our annual investment in water wells is one‐half to three‐quarter...
A preliminary report of a recently discovered aquifer at Sioux Falls, South Dakota
Kenneth D. Vaughan, Earl A. Ackroyd
1968, South Dakota Academy of Science Proceedings (47) 68-74
A hydrologic study of the Big Sioux aquifer system was begun July 1, 1966, by the U.S. Geological Survey, in cooperation with the City of Sioux Falls and the East Dakota Conservancy Sub-District.   Test drilling being done in the search for a southern outlet to the Big Sioux aquifer has...
Hydrologic and climatologic data, 1967, Salt Lake County, Utah
A. G. Hely, Reed W. Mower, C. A. Horr
1968, Utah Basic-Data Release 15
An investigation of the water resources of Salt Lake County, Utah, was undertaken by the Water Resources Division of the U.S. Geological Survey in July 1963. This investigation is a cooperative project financed chiefly by equal contributions of the State of Utah and the Federal Government in accordance with an...
Selected hydrologic data, San Pitch River drainage basin, Utah
G.B. Robinson
1968, Utah Basic-Data Release 14
The u.s. Geological Survey investigated the ground-water resources of the San Pitch River drainage basin during the period 1964- 67. The investigation was a cooperative project, financed equally by the Utah Department of Natural Resources, Division of Water Rights, and the Federal Government, and was a part of an investigation...