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HydroCAD provides several key features of TR-20, such as the unit-hydrograph runoff procedure, in a more user-friendly graphical format. HydroCAD also adds other capabilities that have no equivalent in TR-20, such as time-of-concentration calculations, curve-number lookup, outlet hydraulics, exfiltration calculations, pond storage calculations ...
TR-20 is a computer program for the simulation of runoff occurring from a single storm event. The program develops flood hydrographs from runoff and routes the flow through stream channels and reservoirs.
WinTR-55 uses the TR-20 (NRCS 2002b) model for all of the hydrograph procedures: generation, channel routing, storage routing, and hydrograph summation. Figure 10 is a diagram showing the WinTR-55 model, its relationship to TR-20, and the files associated with the model. TR-55 System. TR-55 Windows. State Rainfall Data Help Text.
12 Μαΐ 2001 · A modified Natural Resources Conservation Service (NRCS) TR-20 model, TR-20-RICE, was developed to investigate the storm runoff characteristics of a 385-ha mixed-landuse watershed in Korea.
models that can be used in urban hydrology design: Computer Pro gram for Project Formulation-Hydrology (TR-20) (1) and Urban Hydrology for Small Watersheds (TR-55) (2).
The TR-20 model is an event watershed hydrologic model used to analyze impacts of watershed changes (land use, reservoir construction, channel modification, etc) on volume of runoff and peak discharge.
Conservation Service WinTR-20 hydrologic model. Required GIS layers include Digital Elevation, soil data, land use, and stream data. The WinTR-20 computer program is used in NRCS to estimate peak discharge and runoff volume from watersheds for use in designing water control structures and in determining
