DECISION SUPPORT TOOL FOR THE WALKER RIVER BASIN
Transcript of DECISION SUPPORT TOOL FOR THE WALKER RIVER BASIN
DECISION SUPPORT TOOL FOR THE WALKER RIVER BASIN
Greg Pohll March 29, 2015
Walker Lake | Credit: Jeff Gersh (Narrative Labs)
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The Walker Basin Restoration Program (WBRP) was established by Public Law 111-85 (2009) for the primary purpose of restoring and maintaining Walker Lake, and to protect agricultural, environmental and habitat interests in the Walker Basin consistent with that primary purpose.
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PRMS models of headwater areas (Supply Side)
MODSIM River Basin Management system
MODFLOW models for Mason, Smith, & lower Walker (Demand Side)
Economics Model Lake M
odel
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River Inflows
River Outflows
HRUs
Surface Diversions
Ditch Leakage
Return Flows
Irrigation Recharge
Groundwater System
Stream & Drain Flow Exchange with Groundwater
Non-Ag ET (lost from system)
River/Drain Network
Crop ET (lost from system)
Groundwater Pumping
(Storage) Interbasin Groundwater flow
Interbasin Groundwater flow
Mtn Block Recharge
y = 0.3211x - 857.69 R² = 0.7096
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Net
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Previous Year Groundwater Pumping Volume (acre-ft/yr)