The Stream Surface tool generates a series of stream models based on the water elevation (edge of water and water surface points), the stream topography (DEM) and wetted perimeter (water extent polygon). These models include a water surface elevation TIN (wsetin), a water surface elevation DEM (wsedem), and a water depth map (depth).
Make sure the following exist:
Water_Extentpolygon (wetted polygon)
Stream_Features(this last feature class can be empty)
Create Stream Surface TIN, DEM and Water Depthin the Workflow Manager.
Make sure the correct Survey Geodatabase is open.
Click OK to run the tool.
Review the Water Depth layer with the Channel Units layer to make sure they are generally in agreement (i.e. pools should have a deep blue color compared to riffles, etc.). If you can’t see the new layers, make sure they are visible in the “Table of Contents” and are the topmost layers.
Review the Water Surface TIN (
WSETIN). The review of the
WSETINis more straightforward than the review of the Topographic
a. Review color banding in
WSETINshould be a continuous ‘rainbow’ of color from one end of the site to the other.
b. Review the
WSETINfor bust or sink points. These will show up as colored pyramids in the
WSETIN. > If any error is found in the
WSETIN, Go back and edit the
Edge of Water Pointsthen, resume processing from Creating a topo TIN from Survey Points.
After you have completed creating and reviewing the Stream Surfaces, you may proceed to Generating Associated and Error Surfaces.
- The Editor and TIN Editor must be turned off.
- WaterExtent Polygon feature class must exist in the Projected Feature Dataset.
- Make sure there are no spaces in the path to the Survey Geodatabase.