Document Details

Humboldt County | Near-Stream Recharge: Reconnecting Surface and Groundwater

The Nature Conservancy (TNC) | January 1st, 2019


Baker Creek, a tributary to the Mattole River, is a key stream for the federally and state protected coho salmon, however portions of the river were running dry due to drought, impeding salmon migration and deteriorating habitat. A partnership of federal and state agencies, consultants and NGOs are working to increase groundwater levels with both instream and offchannel projects to ensure year-round water in the creek and floodplain wetlands for salmon habitat. Salmon now returning to the stream, with Phase 1 of the project complete, 1,300 juvenile coho have been counted in Baker Creek after the previous five years saw zero juveniles. Stream restoration in Baker Creek in the Mattole River watershed is an excellent example of a multi- benefit project recharging groundwater, as well as providing the instream coho salmon habitat that has been disappearing.

Keywords

anadromous fish, floodplain restoration, groundwater dependent ecosystems, Groundwater Exchange, groundwater recharge, groundwater-surface water interaction, habitat restoration, native fish, streams