provided data from their EAASR simulation to the University of Florida. All simulations

were made with the assumption of 2050 land use projections and the reservoir as the

"Next Added Increment" of the CERP project. The provided data included inflow and

outflow for each control structure, the maximum capacity for the water control structures,

rainfall, evapotranspiration (ET) and groundwater levels and the general modeling

configuration and assumptions (USACE and SFWMD, electronic correspondence,

February 2 and 3, 2006). Data were tabulated in 13,149 daily time steps for the 36 year

period, starting on January 1, 1965 and ending on December 31, 2000. The data were

provided for each of the EAASR's four square mile grid cells in the SFWMM for each

time step. The total 2x2 grid is comprised of 1,900 2x2 grid cells. Thus, a major

simulation effort was required to run 36 years of daily activity for 1,900 grid cells in

order to evaluate one project with 19 grid cells (SFWMD 2005a). The IMC output

provides the necessary information on the quantity and timing of the flows.

Water Balance of the FC Base EAASR and STA 3/4

 A water balance (WB) was calculated from the SFWMM to ensure proper

modeling results for the EAASR and STA 3/4. The output data from SFWMM provided

a complete volume balance for the four compartment configuration, including stage data

for each compartment and STA 3/4. Equation 4-2 was modified to include an imbalance

term, which is attributed to ungaged flow. The imbalance term was attributed to either

ungaged inflow or ungaged outflow by its sign and included in the WB (Eqn. 4-5) where

Qinu was ungaged inflow and Qoutu was ungaged outflow.

AS / At = ,, + Q,, +P P+ GW Q,,, Q,,, -ET GW (4-5)