Lower Columbia Intensively Monitored Watershed
Mill - Abernathy - Germany Complex

The purpose of the IMW program is to determine whether restoration projects measurably increase salmonid production. This information will be used in adaptively managing restoration efforts and updating recovery plans. The IMW effort in the MAG complex involves 2 interrelated elements:


• Monitoring fish populations and habitat conditions in both the treatment and control watersheds by the IMW Monitoring Team led by the WA Department of Ecology and WDFW; and


• Conducting extensive habitat restoration work in the Abernathy Creek and nutrient enhancement in Germany Creek.  The habitat restoration work is coordinated by the Lower Columbia Fish Recovery Board (LCFRB).


Monitoring to establish baseline conditions began in 2003 using funding from the Salmon Recovery Funding Board (SRFB). An IMW experimental design plan was completed in 2007 to guide monitoring activities. In January 2009, the LCFRB completed the IMW restoration treatment plan (Plan) for the MAG Complex. This work was funded by the Pacific States Marine Fisheries Commission (PSMFC) via the Washington Recreation and Conservation Office (RCO).


The restoration treatment plan (Plan) surveyed stream reaches in the Abernathy and Germany watersheds and identified potential projects. The projects were ranked based on species importance to recovery, estimated current and/or potential value of the targeted reach or project site to the performance of the target species, species life history stages and associated limiting factors or habitat attributes targeted and anticipated improvement in the quality and quantity of habitat. The Plan presents a three-phased approach to restoration project implementation with each phase comprised of 20 restoration projects. Within each phase, projects are grouped by potential interdependencies to promote economies of scale. The projects are also classified by “opportunities and constraints.” The estimated cost of implementing the Phase 1 projects is $6,025,830.

2014 Rapid Assessment Studies

Cramer Fish Sciences

Fisher and Associates