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Title: Herbert Hoover Dike phase 1A groundwater model
Authors: United States. Army. Corps of Engineers. Philadelphia District
Cheng, Hwai-Ping
Donnell, Barbara P.
Edris, Earl V.
England, Stephen M.
Keywords: Computer Simulation
Cutoff wall impact
Groundwater model
Groundwater modeling system
Herbert Hoover Dike
Okeechobee, Lake (Fla.)
Sensitivity analysis
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/CHL TR ; 10-5.
Description: Technical report
This report presents the project that ERDC and NAP were tasked by SAJ to construct the HHD Phase 1A model. The purpose of the HHD Phase 1A modeling effort was to develop and evaluate a Lake Okeechobee sub-regional groundwater numerical model, and evaluate the sub-regional groundwater changes associated with the introduction of the cutoff wall segments into the subsurface geologic structure underlying Herbert Hoover Dike (Reaches 1 through 3). This report describes the background and goal, the modeling approach, the modeling tools, the collection and compilation of data used for model construction, the model construction processes, and the analysis of simulation results. A steady-state, 3-D groundwater model was developed to evaluate and bound the potential effects of the proposed cutoff wall. The computational results from the "with project", i.e., with cutoff wall, simulations were compared to those from the "without project", i.e., no wall, simulations in order to develop estimates of potential impacts to the sub-regional groundwater heads and flows. A two-stage analysis was conducted to effectively achieve the purpose of this study. Stage 1 sensitivity analysis, including 46 model runs, was used to determine the three most influential subsurface materials from the 11 materials considered. Stage 2 impact analysis, comprised 96 model runs, was used to investigate the cutoff wall effect at various combinations of net recharge and head boundary conditions, pumping, and hydraulic conductivity.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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