2017 Tributary 6.5 Protection and Restoration
TISCHER CREEK TRIBUTARY 6.5 Scope
Tributary 6.5 Phase I: Acquisition. The City will acquire 16 acres adjoining Hartley Nature Preserve owned by ISD 709-Duluth Public Schools that are platted and marketed for development. An unnamed coldwater tributary, designated by DNR as Tributary 6.5, flows through these parcels with a stream length of approximately 0.4 miles (600 feet within the parcels).
Tributary 6.5 Phase II: Restoration. Terrestrial restoration will control and/or remove glossy and common buckthorn, reed canary grass, and Tansy, opening space and canopy for existing natives. Water flow to adjacent wetlands will be restored by replacing a clogged culvert.
Tributary 6.5 Phase III (future funding): An existing utility right-of-way will be replanted with native forbs and grasses. The upper reach of the stream that was straightened will be restored to its original meandering course. Connectivity and fish passage will be restored by removing a culvert and fill over the source, redirecting the flow to the restored channel, and reconnecting the new channel at the downstream end of Tributary 6.5.