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In 2024, with larger simulation models and more monitoring data, a model's dry weather loading is likely to be less than 0.005 MGD, CFS, or CMS. ICM InfoWorks only supports these three unit types. For low flows, the node, link, and subcatchment grids should have more than two decimal places. Alternatively, provide GPM and LPS as flow unit options in ICM so that users can enter larger numbers and the two decimal place issue is not as obvious.
Precision was increased by 2 decimal places in 2026.1 for SWMM network fields Base flow, Base flow for Additional DWF, and Baseline inflow: Display improvement for flow in SWMM nodes
ICM supports multiple display units for flow, including GPM and LPS. The display units can be changed in the Units Options: Options - Units Page