DESCRIPTION
Grant funding was awarded by the Salmon Recovery Funding Board to assess and prioritize restoration opportunities throughout the nearshore environment of the Key Peninsula-Gig Harbor-Islands (KGI) Watershed, within Water Resource Inventory Area 15 (WRIA 15), South Puget Sound, Washington. The project area encompassed approximately 179 miles of shoreline comprised of a diverse suite of nearshore environments and conditions.
To prioritize restoration opportunities throughout the KGI Watershed, we developed and applied a step-wise methodology to assess existing nearshore habitat conditions in conjunction with information filters from which to prioritize restoration opportunities of perceived highest importance. Our assessment methodology applied remote sensing techniques model-based inferences to identify nearshore areas of highest benefit to salmonids, on-the-ground validation, and post-processing of assembled information measures to ultimately derive a suite of areas most in need of nearshore restoration.
The assessment results provide information on existing habitat conditions that can be catalogued according to nearshore habitat features and associated human-induced habitat alterations. The use of habitat-based model scoring schemes allowed us to identify areas of greatest benefit in terms of existing habitat preferred by salmon, while also assessing related stressors in the form of human-induced habitat alterations. Ultimately, assessment results provide a catalogued source of data based within a GIS framework that lends itself to further analyses investigations and assessment updates. Additionally, our assessment builds upon and incorporates previous assessment efforts conducted in the KGI watershed in the year 2003 (Pentec).
A total of 65 nearshore restoration projects were identified, with the majority of these concerning modification and/or removal of bulkhead-armoring, with second being protection of relatively intact marine estuaries. Given the annual funding cycle for nearshore restoration we also identified and detailed pre-project plans for six targeted near-term restoration projects. The value and utility of this updated assessment is furthered in acknowledging inherit limitations in prioritizing restoration according to ‘ecosystem process-based’ criteria. Through our assessment efforts, the need for additional work is recognized and warranted toward more holistic landscape scale considerations from which to better determine appropriate restoration strategies and ultimately the likelihood of achieving desired restoration goals.