. Principles of irrigation engineering, arid lands, water supply, storage works, dams, canals, water rights and products. a differentcharacter of runoff from one of 100 square miles, even in the sameregion, so that when it is desirable to study the amount of waterprobably available from a river basin of a thousand square miles,it is important to obtain the measurements which have applied to asimilar area and not to one notably larger or smaller. It must be recognized that conclusions drawn from such compari-sons are at best subject to grave error, and that an accurate valueof runoff can be had
. Principles of irrigation engineering, arid lands, water supply, storage works, dams, canals, water rights and products. a differentcharacter of runoff from one of 100 square miles, even in the sameregion, so that when it is desirable to study the amount of waterprobably available from a river basin of a thousand square miles,it is important to obtain the measurements which have applied to asimilar area and not to one notably larger or smaller. It must be recognized that conclusions drawn from such compari-sons are at best subject to grave error, and that an accurate valueof runoff can be had only by direct measurement. Measurement of Water.—The measurement of water may prop-erly be considered under two heads, namely, measurement of supplyand measurement of duty requirement. Measurement of supply is for the purpose of determining thequantity of water available for irrigation, power development anddomestic use. It includes the measurement of runoff from the vari-ous streams and to a limited degree also the determination of under-ground flow which may be made available for use through pumping TI. i-i(;. (;UitH| <)i rnakini;; u measurenu-nt oi I k<- anioini: rf Ml a -^Ucain.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectirrigat, bookyear1913
