This project is comprised of three (3) components -C-11 Impoundment, C-9 Impoundment, and Water Conservation Area 3A/3B Levee Seepage Management.

The impoundment areas will 1) aid in reducing seepage from the WCA 3A/3B Seepage Management Area 2) provide groundwater recharge 3) provide adequate water supply to urban areas and 4) prevent saltwater intrusion.

The WCA 3A/3B Levee Seepage Management system will focus on seepage reduction by allowing higher water levels in the L-33 and L-37 borrows. The purpose of the C-11 Impoundment is to direct runoff from the western C-11 drainage basin into the impoundment in lieu of pumping the untreated runoff via S-9 pump station into the WCA 3A. If water is not available in the impoundment area to perform these functions, S-381 will be opened to allow seepage water to recharge the basin and prevent excessive dry outs. In addition, seepage will be collected and returned to the impoundment area.

The purpose of C-9 Impoundment is to pump runoff from the western C-9 drainage basin and diverted water from the western C-11 basin into the impoundment. As a result, this impoundment will assist in reducing seepage from the WCA 3A/3B Levee Seepage Management.