Reestablishing Calibration Monuments for Rosgen Stream Surveying at North Mountain Park

Mitchell Boyd
Eric Smith
Mandy Twitchell

The goal of our capstone project is to reestablish known elevation monuments used for Rosgen stream surveying at North Mountain Park in Ashland Oregon. By installing new site locating tags and cementing pieces of rebar to define the cross sections future study can be conducted to continue to monitor the stream patterns of Bear Creek. Data obtained from January 2013 through April 2013 is compiled with relevant historical data to construct a longitudinal profile and cross section of each site. Rosgen stream surveying provides a better understanding of applied fluvial geomorphology such as flood prone areas, movement and stream morphology, cross-sectional shape/channeling, potential erosion sites, sinuosity, and representative bed load. Rosgen stream classification system involves determining bank full width, mean depth, bank full cross section areas, maximum depth, width of flood prone area, entrenchment ratio, channel materials, water surface slope, channel sinuosity, and performing Wolman pebble counts. Through performing Rosgen stream classification, we will observe and record possible differences in the channel morphology of Bear Creek from previously collected data.