![]() ![]() To correlate sediment loads with boundary discharge, the Rating Curve includes paired Flow-Load data. This option will open the Rating Curve editor depicted in the figure below. If a Rating Curve is associated with a Uniform Lateral Flow Series, HEC-RAS distributes sediment loads in the same proportion it distributes flow. If the user selects an internal cross section in the Sediment Data editor Boundary Condition tab, the Rating Curve button will only activate if a selected internal cross section has an associated flow boundary condition. The sediment Rating Curve boundary condition is always available for upstream boundaries. Select sediment Rating Curves at any cross section with a boundary flow series: upstream, lateral, or lateral uniform. A rating curve computes sediment boundary loads based on boundary flows.
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