Outline for TR-20 User Manual - USDA

Jul 23, 2004 · The current Sub-Area Identifier name will appear on the Time of Concentration window. Enter Sheet Flow Length – Length along sheet flow path for sub-area. Generally, beyond 100 feet the flow becomes concentrated flow. Therefore, sheet flow length is limited to 100 feet (30m). Note: 2-yr rainfall for Sheet Flow is entered with Storm Analysis. ................
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