Water-supply Paper, Volumes 250-252U.S. Government Printing Office, 1910 - Irrigation |
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Common terms and phrases
Accu acre-feet applicable for ice applicable for obstructed-channel April April 29 Area of Gage August August 26 canal canyon channel charge cicicicici có có có daily discharges Daily gage height Date December 28 defined between gage Discharge in second-feet discharge measurements diverted drainage area drainage basin Feather River February February 11 feet foothills Gage Dis gaging station Humboldt River Hydrographer ice or obstructed-channel irrigation January July June 26 Klamath River Lagrange March Maximum mean Merced River Minimum Monthly discharge mountains North Fork November obstructed-channel conditions October Oreg Owens River Pine R. B. Post Rating tables records River basin River drainage basin Run-off total San Joaquin Sec.-ft Sept September September 23 Sierra slope South Fork Sq.ft square miles storage total in acre-feet tributaries Utah velocity W. A. Lamb W. F. Martin Water-Supply Paper Width
Popular passages
Page 361 - Survey, and the classification of the public lands and examination of the Geological Structure, mineral resources and products of the national domain...
Page 10 - ... tables are computed. The rating table gives, either directly or "by interpolation, the discharge in second-feet corresponding to every stage of the river recorded during the period for which it is applicable.
Page 11 - At most stations the gage is read in the morning and in the evening. The gage height given in the table represents the elevation of the surface of the water above the zero of the gage. All gage heights during ice conditions, backwater from obstructions, etc., are published as recorded, with suitable footnotes.
Page 10 - British imperial gallons per second. 1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep. 1 second-foot for one year equals 31,536,000 cubic feet. 1 second-foot equals about 1 acre-inch per hour. 1 second-foot for one day covers 1 square mile 0.03719 inch deep.
Page 9 - Cubic feet per second per square mile (cfsm) is the average number of cubic feet of water flowing per second from each square mile of area drained, assuming that the runoff is distributed uniformly in time and area. Runoff in inches...
Page 361 - For gaging the streams and determining the water supply of the United States, and for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources.
Page 10 - ... inches deep. 1 second-foot for one 31-day month covers 1 square mile 1.153 inches deep. 1 second-foot for one day equals 1.983 acre-feet. 1 second-foot for one 28-day month equals 55.54 acre-feet. 1 second-foot for one 29-day month equals 57.52 acre-feet. 1 second-foot for one 30-day month equals 59.50 acre-feet. 1 second-foot for one 31-day month equals 61.49 acre-feet.
Page 20 - On the day of a measurement the rating curve for that day passes tlirough t1 , measurement. For days between successive measurements it is assumed that the rate of change is uniform, and hence the ratings for the intervening days are equally spaced between the ratings passing through the two measurements. This method must be modified or abandoned altogether, under special conditions. Personal judgment and a knowledge of the conditions involved can alone dictate the course to pursue in such cases....
Page 20 - ... parabolic in form. In many cases curves of area in square feet and mean velocity in feet per second are also constructed to the same scale of ordinates as the discharge curve. These are used mainly to extend the discharge curves beyond the limits of the plotted discharge measurements and for checking purposes to avoid errors in the form of the discharge curve and to determine and eliminate erroneous measurements. For every...