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Operating Rules for Joint Operation of Raw Water Sources
Author(s) -
Joeres Erhard F.,
Liebman Jon C.,
Revelle Charles S.
Publication year - 1971
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr007i002p00225
Subject(s) - backup , water supply , streamflow , constant (computer programming) , computer science , raw water , operating cost , function (biology) , flow (mathematics) , water storage , environmental science , mathematical optimization , operations research , engineering , environmental engineering , mathematics , waste management , programming language , mechanical engineering , drainage basin , cartography , geometry , database , evolutionary biology , inlet , biology , geography
The techniques of linear programing, synthetic streamflow generation, and simulation are merged to derive operating rules for a multiple source water supply. The approach is general; it is here applied to the Baltimore water supply, where upland reservoirs furnish water by gravity flow, and a backup supply delivers pumped water from the Susquehanna River. The reservoir water is essentially free but subject to random storage fluctuations, whereas the backup supply has constant availability but a high operating cost. The algorithm assumes reservoir release to be a linear function of available storage at the beginning of a period. Chance constrained linear programing is employed to select candidate operating policies which are subsequently tested by a simulation program for long‐term performance. Results indicate that substantial savings can be effected with concurrent frequent improvement in system performance, when compared with operation under a constant reservoir draft policy.