Bureau of Land Management Solar Energy Program Western Solar Plan
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Groundwater Modeling for the Dry Lake SEZ

The purpose of the Dry Lake Model is to assess potential impacts associated with groundwater withdrawals to support solar energy development in the vicinity of the Dry Lake SEZ. This SEZ is located in the Garnet Valley (Hydrologic Area 216).

Additional drawdown due to medium-demand SEZ pumping after 20 years.
Additional drawdown due to medium-demand SEZ pumping after 20 years.

The Dry Lake SEZ model is a modification of a model recently constructed by the Department of Interior (DOI) to assess groundwater impacts in a region including Garnet Valley. The model was created using the U.S. Geological Survey's MODFLOW 2000 code. Pre- and post-processing was performed using Groundwater Modeling System (GMS) version 9. Modeling was performed by selecting a future pumping scenario addressed in the DOI model and imposing additional stress on the system due to assumed future SEZ water requirements. Twenty years of high-, medium-, and low-demand groundwater pumping at the SEZ were modeled, producing estimates of the additional groundwater drawdown due to full build-out of the SEZ.

Dry Lake Model Report

The Dry Lake SEZ model report has further information regarding its development and results.

Dry Lake Model Download

The Dry Lake model files are contained in a single .zip file. Please see the “Implementing the custom DOI files for display in GMS.txt” file for instructions for using the DOI model files.

Note: Modeling was performed using GMS version 9.1.4 (64-bit) with a build date of May 1, 2013. The files are packaged in a single zip file. When unzipped, they may be useable by older or newer versions of GMS or by other commercial graphical user interfaces; however, functionality cannot be guaranteed.

Alterations to the Dry Lake Model could be made with the incorporation of new data regarding the hydrogeological framework and aquifer parameter values. As projects are planned, constructed, and begin operations additional groundwater pumping scenarios can be analyzed and new data on head observations in monitoring wells can be used to refine the model.

For questions regarding the Dry Lake Model, please contact John Quinn.

Updated: 6/2/2014