Planning & Management
397481 - An optimization model to aid the conveyance capacity assessment within the upper Kissimmee chain of lakes in Florida
Thursday, June 7
8:30 AM - 10:00 AM
Location: Greenway GH
The South Florida Water Management District (District) is responsible for operating the south Florida regional water management system and operates it for flood control, water supply, water quality treatment and ecosystem restoration. The upper Kissimmee chain of lakes provides water to the Kissimmee river and eventually to Lake Okeechobee which is the major storage for the regional water management system. Water is conveyed within the upper Kissimmee chain of lakes via interconnected canals; lake releases are controlled by a series of gated gravity structures that were built over 50 years ago. Evaluation of the current conveyance system owning to changes in land-use & landcover, hydrology and canal geometry that have occurred through time is beneficial for optimal operation of the current system. As a result of this, the District has embarked on the conveyance capacity assessment study within the upper Kissimmee chain of lakes system to identify conveyance limitation and in turn propose the best conveyance enhancement design alternative that will achieve the operation of the lakes at or below their prescribed water control regulation schedules. To assist this effort, an optimization model was developed that determines optimal set of releases from the system of lakes that keep stages in the lakes within their water control regulation schedules. The developed linear programming (LP) optimization model generates optimal lake releases that minimizes the sum of lake stage deviations from the water control regulation schedule while meeting structure, storage and mass balance constraints. The developed model was successfully applied to the upper Kissimmee chain of lakes (a five-lake system) using historical hydrologic inputs to generate optimal releases at three water control structures (S59, S61 and S65). The developed LP model could be extended to run under forecast mode to assist water managers in generating optimal near-future releases given forecasted hydro-meteorological inputs.