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Page 5787, results 144651 - 144675

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Water levels and artesian pressures in the Chad Basin of northeastern Nigeria, 1963-68
S.W. Carmalt, G. Chase Tibbitts Jr.
1969, Open-File Report 72-61
This report presents records of water levels and artesian pressures collected during 1963-68 on an observational network of 116 dug wells and boreholes (drilled wells) in the Chad Basin of northeastern Nigeria. The Chad Basin is underlain by the Chad Formation, a series of fluvio-lacustrine sediments which attain a thickness...
Perspective center determination
J.D. McLaurin
1969, Open-File Report 70-209
This program determines coordinates of the perspective center of a stereoplotter projector by bringing two bundles of rays into a best fit coincidence in a space-resection solution. One of the bundles of rays is defined by the perspective center and the grid intersections on a grid plate. The other bundle...
Floods in Gravois Creek Basin, St. Louis County, Missouri
L.D. Hauth, D.W. Spencer
1969, Open-File Report 69-122
The rapid growth of suburban St. Louis presents problems in the social and economic development of flood plains within the area. The U.S. Geological Survey, in cooperation with the Metropolitan St. Louis Sewer District, is conducting a study of the hydrology of five major drainage basins within the area of...
Water-resources appraisal of Crater Lake National Park, Oregon
F. J. Frank, A.B. Harris
1969, Open-File Report 69-95
Crater Lake National Park is on the crest of the Cascade Range in southwestern Oregon. Except for small areas of glacial deposits, the area is underlain by volcanic rocks of Tertiary and Quaternary age. The principal rock types are andesitic and basaltic lavas, pumiceous volcanic flow breccias, tuffs, and airborne...
Chemical quality of surface water in the Umpqua River Basin, Oregon
D. A. Curtiss
1969, Open-File Report 69-67
In July 1967, the U.S. Geological Survey, in cooperation with Douglas County, began a 2-year study of the chemical quality of surface water in the Umpqua River basin. The purpose of this report is to present an interpretive summary of the data collected, which will provide answers to the following...