The purpose of this Columbia River Stream Survey has been to provide data for evaluation of each stream, or portion of stream, from the standpoint of its present and potential value in relation to the maintenance of the salmon resources of the Columbia River Two reports have been published to date, this being the third of the series This report deals with the streams in Area II Area II includes all tributaries entering the Columbia River on the south, or Oregon side, in the 204 miles from the mouth up to but not including the Deschutes River
This report deals with the streams in Area IV Area IV includes all tributaries entering the Columbia River from the south and east in the 120 miles from the Deschutes River up to but not including the Snake River
