The traditional definition of surface water yield is that output which a water resource system could sustain under a specified design runoff criteria. For a river abstraction this is a function of the minimum flow under the design runoff and any restrictions on abstraction such as licence conditions relating to a prescribed or maintained flow. For a reservoir system, the yield would be a function of the storage availability as well as runoff. The full usable capacity typically contributes to the calculation of the yield. This is combined with a cumulative runoff sequence of either historic or specified severity. All possible combinations of consecutive cumulative months’ runoff from the record are considered to establish the amount which could theoretically be abstracted from the reservoir in each case. The minimum value represents the gross yield of the reservoir. The yield available for supply purposes would be this gross value minus any compensation water or other releases. Similar...
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© 1998 Kluwer Academic Publishers
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Walker, S. (1998). Surfacewater yield calculation . In: Encyclopedia of Hydrology and Lakes. Encyclopedia of Earth Science. Springer, Dordrecht . https://doi.org/10.1007/1-4020-4497-6_215
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DOI: https://doi.org/10.1007/1-4020-4497-6_215
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