Grand County, CO

ERC completed planning, design and construction of restoration of the Williams Fork upstream and downstream of the reservoir. Restoration work was for mitigation of stream impacts associated with Denver Water’s Moffat project and included restoration of approximately two miles of river. Project settings upstream of the reservoir necessitated accounting for significant sediment influx while the segments downstream of the reservoir were designed for minimal sediment loading and a highly altered annual hydrograph. Designs both upstream and downstream of the dam focused on improving habitat during lower flow periods to attract more resident fish and improve year-round angling. Riffle/pool/glide complexes, boulder cascade features, split flow channels and significant woody debris and habitat features were incorporated for habitat diversity and flow controls.