Clayburn Creek Watercourse Assessment: Development and Stream Management in an Urban Residential Area. Shawna M. T. Erickson , U.C.F.V. Geography Undergrad, Abbotsford, B.C., V2S 7M8, E-mail:
[email protected] Steven Marsh, Instructor of Geography, U.C.F.V., Abbotsford, B.C., V2S 7M8. E-mail:
[email protected] Abstract: The Clayburn Creek watershed, Abbotsford, British Columbia has undergone numerous changes in the recent past. These changes have dramatically increased the number of high water flow events. High flow events on this fish bearing stream are causing increased erosion along the stream channel increasing the sediment load of the stream. These events can be correlated to increasing development and population growth upstream from Clayburn Village within the Clayburn Creek watershed. Mapping of the stream course with a Trimble GPS along with the plotting of numerous cross sections across the stream channel will allow the researchers to determine if any changes are occurring within the stream channel in the future. Measurement of precipitation and stream turbidity values will allow the monitoring of rainfall events and their impact on the watershed. With developments being expanded and new developments being planned for upstream locations it is necessary to document the present state of the watershed and to collect baseline data. This knowledge if used to assist in the implementation of effective mitigation practices may alleviate future flood events from impacting historic Clayburn Village. Keywords : Stream mapping, Flood event, Turbidity, Development, Stream Management. 1.0 Introduction Development surrounding the Clayburn Creek watershed has quickened the response rate of the creek from precipitation events, increased the sediment loading in the stream and increased the discharge rates within the watercourse.