Geological Survey Water-supply Paper

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U.S. Government Printing Office, 1950 - Irrigation

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Page 3 - Control designates a feature downstream from the gage that determines the stage-discharge relation at the gage.
Page 2 - Gaging station is a particular site on a stream, canal, lake, or reservoir where systematic observations of gage height or discharge are obtained. When used in connection with a discharge record, the term is applied only to those gaging stations where a continuous record of discharge is obtained.
Page 3 - In assigning station numbers, no distinction is made between partial-record stations and continuous-record gaging stations, so that the station number for a partial-record station indicates downstream order position in a list made up of both types of stations. Gaps are left in the numbers to allow for new stations that may be established; hence the numbers are not consecutive. The complete number for each station, such as 6-7945.00, includes the part number "6" and a six digit station number.
Page 5 - OF DATA The base data collected at gaging stations consist of records of stage and measurements of discharge.
Page 5 - This necessitates the use of the slope method in which the slope or fall in a reach of the stream is a factor in determining discharge.
Page 3 - A similar order is followed listing stations on first rank, second rank, and other ranks of tributaries.
Page 8 - Occasionally, a series of discharge measurements are made within a short time period to investigate the seepage gains or losses along a reach of a stream or to determine the low-flow characteristics of an area.
Page 4 - ... in the usual manner. Discharge for periods of ice effect is computed on the basis of the gage-height record and occasional winter discharge measurements, consideration being given to the available information on temperature and precipitation, notes by gage observers and engineers, and comparable records of discharge for other stations in the same or nearby basins.
Page 3 - Acre-foot (ac-ft) is the quantity of water required to cover an acre to the depth of 1 foot and is equivalent to 43,560 cubic feet. Cfs -day is the volume of water represented by a flow of 1 cubic foot per second for 24 hours. It is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons, and represents a runoff of 0.0372 inch from 1 square mile.
Page 3 - Contents is the volume of water in a reservoir or lake. Unless otherwise indicated, volume is computed on the basis of a level pool and does not include bank storage.

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