Project Description

Inter-Fluve has completed over 90 reach assessments across the US, covering well over 2,000 miles of river. The projects have ranged from the 20-mile assessment we completed on the Upper Methow River in the North Cascades of Washington, to urban assessments like the 136-mile geomorphic assessment of the Minnehaha River basin. All assessments are unique, but most include a stream habitat inventory, geomorphology assessment, reach-scale hydraulic modeling, and evaluation of conditions using a Reach-Based Ecosystem Indicator.

Reach Assessments are the foundation of a stream habitat restoration strategy, subsequent habitat improvement targets, and corresponding projects required to achieve those targets. Ultimately, these assessments lead to projects in the ground. For example, in the Upper Columbia Watershed, we completed 8 assessments covering 98 miles of river for the Yakama Nation over 7 years. We’ve since worked with the Yakama Nation to design and construct 25 projects.

Walking each river mile on foot and measuring the old fashioned way (with a 100-foot-tape) allows us to intimately understand each reach.

Emily Alcott performing a geomorphic assessment on Abernathy Creek, Washington.

Investigations and subsequent analyses are used to develop and prioritize potential fish habitat restoration project sites.

In 2007, we completed a 125-mile geomorphic and habitat assessment of Minnesota’s Sand Creek and Credit River watersheds.

Mackenzie Baxter performing a habitat assessment on the Upper Methow River. The habitat assessment includes counting each piece of large woody material (LWM).

Mike Brunfelt performing project identification on the Entiat River following a nine-mile reach assessment.