Evaluation of Streamflow Depletion Related to Groundwater Withdrawal, Humboldt River Basin


Groundwater Withdrawals from Individual Hydrographic Areas

Cumulative and annual effects of groundwater withdrawals from each hydrographic area (HA) on Humboldt River depletion will be evaluated and summarized by:

  • simulating impact of existing pumping from each HA on streamflow depletion,
  • creating pumping scenario for each HA by removing pumping from all other HA’s in calibrated models, and
  • evaluating stream depletion by differencing streamflows between HA pumping scenarios and reference scenario.

This evaluation will also provide a measure of the relative connection of the groundwater systems within each of the hydrographic areas to the Humboldt River.