Growing consumptive use of water in the Susquehanna River Basin has prompted the U.S. Army Engineer District, Baltimore, to examine the feasibility of reallocating a portion of flood-control storage of Cowanesque Lake to water supply storage. This reallocation would result in increases to normal pool elevation which may alter the thermal structure of the lake and render the present selective withdrawal system inadequate for release temperature maintenance. A one-dimensional numerical model was used to evaluate the ability of the present selective withdrawal system to meet release temperature objectives for three proposed increased pool elevations for four study years. Subsequently, the one-dimensional numerical model was coupled with a numerical optimization routine to provide estimates for the location of additional selective withdrawal intakes required to meet specified release temperature objectives for the higher normal pools. It was determined that four additional selective withdrawal intakes would be required to provide the flexibility necessary to maintain downstream temperature objectives. Furthermore, the additional ports (6 ft wide by 7 ft high) should be larger than the existing ports (5 ft by 5 ft) to ensure that the intakes can pass flow at a rate equal to the capacity of the wet wells.
Effects of Storage Reallocation on Thermal Characteristics of Cowanesque Lake, Pennsylvania: Numerical Model Investigation
Technical Report ; HL-82-9
1982
8448859
Report
Elektronische Ressource
Englisch
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