DESCRIPTION
Colville Confederated Tribes used this funding to continue previous efforts in the Omak Creek watershed. This project decommissioned an additional 20 miles of road in the upper watershed area of Omak Creek. Road sections were selected through an inter-disciplinary team and based upon location, condition, and utility. Monitoring included measuring volume of fine sediment in pools. These measurements, conducted post road decommissioning, were compared to baseline data collected during 2000.
Omak Creek, tributary to the Okanogan River, contains natural reproducing steelhead, federally listed as "endangered". However, past land management activities continue to impair aquatic habitat in Omak Creek. Unnaturally high amounts of fine sediments occurs throughout the stream, but are excessive in reaches within the upper watershed. Roads were identified as the leading factor for increased sediment yield in the Omak Creek Watershed Plan and Environmental Assessment.
Road density within the Omak Creek watershed is conservatively estimated at approximately 6.35 miles/square mile. o reduce the deleterious effects of the high road density, a "ripping" technique has been implemented on road surfaces to allow infiltration and decrease the amount of sediment delivered to stream channels.