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1) TR-20 is a computer program for the generation and routing of runoff hydrographs. Unlike TR-55, which was developed for manual use, the calculations in TR-20 are far too complex and numerous to be of practical use without appropriate computer software.
9 Μαρ 2021 · TR-20 User Manual - NRCS Irrigation ToolBox. Topics manualzilla, manuals, Collection manuals_contributions; manuals; additional_collections Item Size 65.6M . Addeddate 2021-03-09 12:49:16 Identifier manualzilla-id-5804629 Identifier-ark ark:/13960/t9873ck0g Ocr tesseract 5.0.0-alpha-20201231-10-g1236 ...
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.
If you are using SCS Unit hydrograph method with SCS loss method, the results should match closely with TR-20 hydrology. TR-20 represents the full-bore implementation of these methods, whereas TR-55 is a more simplified version that lent itself more to hand calculations.
TR-20 TR-55 Comparison. The following table summarizes the technical similarities and differences between these three programs. HydroCAD combines the most-used capabilities of TR-20 and TR-55, plus many other techniques and features not provided by either program.
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Users of this manual should have a working knowledge of applied hydrology, including familiarity with the Rational Method, SCS TR-20 and SCS TR-55 methodology. Persons without a background in hydrology should refer to the suggested engineering hydrology texts listed in the bibliography.
