Activities Potentially Impacting Sediment Supply & Channel Stability

The summary of land use history of the watershed (Step 2) is key to linking land and river management activities to the sources influencing sediment supply and river stability. Step 3 builds an understanding of how specific, past or present land and river management activities potentially affect the variables that influence river stability and sediment supply. Table 7 (PDF, 48kb, 1 p.), Table 8 (PDF, 36kb, 1 p.) and Table 9 summarize the direct, indirect and negligible effects of several land and river management activities that potentially influence hillslope, channel and hydrologic processes and associated variables leading to changes in river stability and sediment supply. If some of these activities are associated with the land use history of the watershed, they need to be identified in this step for later evaluation during the spatial portion of this assessment (Steps 5-12). This information will also help determine the need for additional data sources to assist in the identification of potential problem areas/reaches. Use Worksheet 1b (PDF, 72 kb, 1 p.) to record potential land use impacts by subwatershed location.

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