Active bank erosion contributes sediments to streams. The ODFW GIS data and the Lincoln District data used in this assessment show the percent of the total reach length composed of units that have some active bank erosion. The "measure" worksheet of the USFS Region 6 database contains a field called "bank_stability," but only 1380 out of 6486 reach records have data in this field, so it could not be used for the assessment.

We calculated a 6th field average of length of units with any active bank erosion (weighted by reach length) for each data source (LD_bkeros from the Lincoln District data, and Dfw_bkeros from the ODFW reach-level GIS data). We then calculated a 6th field average of the two data sources (weighting by surveyed length from each source) (Bker_all in aqhab_sum_final.zip).

Spreadsheet Data: aqhab sum_final.xls

Shapefile: aqhab_sum final.zip

Metadata: MD_aqhab_sum_final.doc

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Please address questions or comments to:

Dr. Ralph Garono
Principal Investigator
Earth Design Consultants, Inc.
rgarono@earthdesign.com

Laura Brophy
Principal Investigator
Green Point Consulting
brophyl@peak.org | homepage