PondPack uses the industry-standard Hydraulic Design Series No. 5 methods from the FHWA to automatically perform outlet calculations.
With PondPack, you can model complex outlets in parallel and series for a variety of tailwater conditions and automatically check for inlet or outlet control. Include weirs, orifices, culverts, risers, inlet boxes, and any user-defined structure in your design. You can then generate single, multi-stage, or complex rating curves for interconnected pond analysis.