A rating curve in a SWMM network is used to define the relationship between either the head difference across the outlet or the freeboard depth above its opening, and its flow rate.
Information relating to a rating curve can be viewed and edited on the Rating Curve Grid Window of the Links Grids or on the Rating Curve Property Sheet.
To view and edit all rating curve data, use the Property Sheet.
The table below describes all the data used to define a rating curve. For details of results fields for links, see the Link Results Data Fields (SWMM) topic.
Fields that are common to the majority of objects can be found in the Common Fields topic.