Sunday, July 28, 2013
SWMM5 Runoff and Depth Relationships
Note: The surface runoff is a non linear function of the independent depth in both the pervious and impervious areas of the subcatchments. No surface runoff occurs until the depth over either the impervious or pervious area is greater than the respective depression storage (Figure's 1, 2, 3 and 4).
Figure 1: Surface Runoff, Depth and Depression Storage Relationship.
Figure 2: Subcatchment Runoff and Depth over time with a Subcatchment Width of 500 feet.
Figure 3: Subcatchment Runoff and Depth in a Scatter Graph with a Subcatchment Width of 500 feet.
Figure 4: Subcatchment Runoff and Depth in a Scatter Graph with a Subcatchment Width of 2000 feet.
GIS Gateway – Create Shapefile T he Create Shapefile tool available from the GIS Gateway , allows you to create a new ESRI® Shapefile dir...
Engine Error Number Description ERROR 101: memory allocation error. ...
Soffit Level ( pipe technology ) The top point of the inside open section of a pipe or box conduit. The soffit is the ...
Note: Orifice and Weir Flow Computations The orifice flow calculation proceeds as follows: 1. Initially and whenever the setting (i.e...