Crooked Creek Reconnaissance and Restoration Plan
Watershed and Stream Assessments
Client / Agency
The Lake County Umbrella Watershed Council
Lake Soil and Water Conservation District, U.S. Forest Service Fremont-Winema National Forest, local landowners, Oregon Watershed Enhancement Board, and U.S. Fish & Wildlife Service
Valley Falls, Oregon
The Lake County Umbrella Watershed Council in cooperation with the Lake Soil and Water Conservation District, U.S. Forest Service Fremont-Winema National Forest, and local landowners, with funding provided by the Oregon Watershed Enhancement Board and U.S. Fish & Wildlife Service, retained River Design Group, Inc. to complete a reconnaissance and restoration plan for Crooked Creek near Valley Falls, Oregon. River Design Group, Inc. completed an existing conditions survey to assess channel stability, vegetation conditions, and opportunities for improving stream function, aquatic habitat, and fish passage. Additional tasks included completing remote sensing for watershed characterization.
Field data collected in June and September 2011, included field observations, culvert and channel surveys, and fish passage analyses. Field work was completed on mainstem Crooked Creek in addition to the lower extents of several tributaries that provided historical habitat for Chewaucan redband trout. Field data were processed and managed in AutoCAD Civil 3D and ArcGIS 10.1. Observations and ground photos were reviewed and used to develop the following report.
A limiting factors analysis was prepared for the Crooked Creek stream corridor. The analysis highlighted conditions affecting channel morphology, riparian vegetation, and aquatic habitat. Restoration strategies and treatments are proposed to address the identified limiting factors. Collections of treatments are organized into habitat actions for each of the eight project reaches. Fifty potential restoration and conservation projects were identified and prioritized based on potential benefit, cost, and risk. Preliminary construction project implementation costs were also included.
The Crooked Creek Reconnaissance and Restoration Prioritization Plan provides an overview of historical and exiting stream corridor conditions, and offers suggestions for improving the stability and ecological function of the stream corridor. Recommended actions are tiered towards improving stream corridor management and addressing fish passage barriers that currently limit stream network connectivity.