Identifying Riparian Areas within the Black Brook Model Watershed Through a Spatial Analysis Approach
Authors: Smith, T., B. Robertson, S. Hann, R. Hardin, F. Rui Meng
Description: Anthropogenic impacts on riparian areas are an increasing concern in agricultural landscapes. Identifying riparian areas quickly and accurately is important in developing land management practices that will safeguard the ecological processes within them which act to protect water quality. Delineating riparian areas is complicated by the various factors -including topography, slope, depth to water table, and climate - that influence their characteristics. Spatial analysis using Geographic Information Systems (GIS) offers the ability to create a data set to reliably delineate riparian areas in a given landscape, and identify at-risk areas within them. A small model watershed in New Brunswick was chosen as a study area for an initial desktop exercise in which Spatial Analyst (ArcGIS) and biophysical data layers (DEM, Orthophoto, landuse, depth to water table) were used to create a dataset and algorithm that identifies the possible riparian areas in the watershed. Various threshold values were used to compute different potential riparian areas, which were compared with known detailed imagery of riparian areas in the model watershed. Next steps will involve a quantitative analysis of the GIS-derived riparian areas vs the actual riparian areas, which will target areas to be ground-truthed. Results of the ground-truthing will be used to finalize parameters within the dataset for producing risk index maps. The product will contribute toward a tool which delineates riparian areas and identifies zones for the establishment of Beneficial Management Practices which may mitigate negative effects of land use on riparian buffer function.
Keywords: riparian, spatial analysis, watershed
Technical field: Information Systems Engineering
Conference name: CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Session name: Poster
Citation: Smith, T., B. Robertson, S. Hann, R. Hardin, F. Rui Meng. 2015. Identifying Riparian Areas within the Black Brook Model Watershed Through a Spatial Analysis Approach. CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering