Des Moines Creek Basin Plan Khan Climate Impact Wetlands 2012

 Wetter winters and drier summers for Pacific NW  Increases in storm intensity and magnitude for Puget Sound Case Study Site: Des Moines Creek Regional Detention Facility (RDF)  30+ acres comprised of forested, scrub-shrub, emergent and open water wetlands  130 acre-feet of storm-water detention  RDF altered wetland hydrology especially during storm events….SO…. Research Questions: 1. Does altered hydrology of the RDF mimic PNW climate change? 2. Is RDF an ideal candidate for analyzing wetland plant community impacts related to PNW climate change? Results:  Potential hydrologic correlations between RDF and climate change projections for 2-yr and 5-yr events  No qualitative evidence of transition from forested- ->scrub-shrub->emergent->open water pseudo- indicative of climate change impacts  RDF with modifications may be ideal candidate Recommendations:  Run HSPF model for RDF using climate change data  Develop comprehensive vegetation monitoring plan to assess plant species richness Des Moines Creek Basin Projects were funded & implemented by the Des Moines Creek Basin Committee consisting of King County, Cities of Sea-Tac and Des Moines; Port of Seattle and WSDOT. Committee: Kern Ewing, Jim Fridley, Alan Hamlet
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