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Page 5866, results 146626 - 146650

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A comparison of methods of estimating potential evapotranspiration from climatological data in arid and subhumid environments
R.W. Cruff, T. H. Thompson
1967, Water Supply Paper 1839-M
This study compared potential evapotranspiration, computed from climatological data by each of six empirical methods, with pan evaporation adjusted to equivalent lake evaporation by regional coefficients. The six methods tested were the Thornthwaite, U.S. Weather Bureau (a modification of the Permian method), Lowry-Johnson, Blaney-Criddle, Lane, and Hamon methods. The test...
Geologic reconnaissance of possible powersites at Spur Mountain, Tyee, and Eagle lakes, southeastern Alaska
James E. Callahan, Alexander Andrew Wanek
1967, Open-File Report 67-35
Spur Mountain, Tyee, and Eagle Lakes fill glacially scoured bedrock basins in the Coast Range of southeastern Alaska. The bedrock consists of granitic intrusive rocks and high rank metamorphic rocks associated with or resulting from emplacement of the Coast Range batholith.Spur Mountain damsite is underlain by granodiorite and diorite. The...
Form and stability of aluminum hydroxide complexes in dilute solution
John David Hem, Charles Elmer Roberson
1967, Water Supply Paper 1827-A
Laboratory studies of solutions 4.53 x 10 -4 to 4.5 x 10 -5 molal (12.2-1.2 ppm) in aluminum, in 0.01 molal sodium perchlorate, were conducted to obtain information as to the probable behavior of aluminum in natural water. When the solutions were brought to pH 7.5-9.5 and allowed to stand...
Bedded barite in East Northumberland Canyon, Nye County, Nevada
Daniel R. Shawe, F. G. Poole, Donald Albert Brobst
1967, Circular 555
Bedded barite has been identified in the course of stratigraphic studies by the U.S. Geological Survey in and near East Northumberland Canyon, Toquima Range, Nye County, Nev. The barite beds are interlayered in black chert of probable Ordovician age. The barite rock is mostly dark gray and massive, has a...
Measurement of peak discharge at width contractions by indirect methods
Howard Frederick Matthai
1967, Techniques of Water-Resources Investigations 03-A4
This chapter describes procedures for measuring peak discharges using open-channel width contractions. Field and office procedures limited to this method are described. The discharge equation based on the continuity and energy equations between an approach cross section and the contracted section under a bridge or contraction is given. Contractions...