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.