Projects

Project Name

Geomorphic Data Summary Report for Kootenai River Restoration Planning

Category
Watershed and Stream Assessments
Client / Agency
Kootenai Tribe of Idaho
Location
Bonners Ferry, Idaho
Date
2007 to 2008
Project Description
River Design Group, Inc. prepared a geomorphic summary of the Priest River, located in the Idaho Panhandle, and the Bull River located in western Montana, as part of a larger effort undertaken by the Kootenai Tribes of Idaho to restore matural recruitment of Kootenai River white sturgeon. The assessment was one of several methods that was used to support restoration planning efforts for the Kootenai River near Bonners Ferry, Idaho.

Objectives for the assessment included: (1) Collect geomorphic data from references reaches with similar morphological characteristics as the desired condition of the Kootenai River, and (2) Process and analyze the data to produce a set of scalable morphological variables suitable for use as design criteria in the restoration planning effort.

The assessment included a multi-stage field data collection effort that characterized existing river corridor conditions. Field data collection included cross-sections, profiles, and planform analysis. Gage analyses were completed for both the Priest River and Bull River to characterize stage-discharge relationships and to establish dimensionless ratios related to the bankfull channel dimensions.

Related Content

  • Geomorphic Data Summary Report for Kootenai River Restoration Planning
    Geomorphic Data Summary Report Restore Natural Recruitment of Kootenai River White Sturgeon January 2008 [ Download ]
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Project Images

Photo of the upper terminus of the Bull River survey showing a sinuous, low gradient ‘E5’ channel with a low width to depth ratio and well-vegetated banks.
Photo of a deep pool feature within the Bull River survey showing a low gradient system with a sub-critical flow regime and minimal bank erosion.
Photo of a riffle feature within the Bull River survey showing a low gradient ‘E5’ channel with grasses and sedges comprising the bank flora. The dense vegetation helps promote and maintain the undercut banks. The sand and fine gravels of the channel substrate is visible in the reflection of the mountains.
Photo of a pool/glide sequence within the Priest River survey showing a single-thread ‘C4’ channel and a well-developed point bar.
Photo of a riffle feature within the Priest River survey showing a densely forested riparian buffer and geomorphically stable banks.