Αποτελέσματα Αναζήτησης
Technical Release 55 (TR-55) presents simplified procedures for estimating runoff and peak discharges in small watersheds. In selecting the appropriate procedure, consider the scope and complexity of the problem, the available data, and the acceptable level of error. While this TR gives special emphasis to urban
Urban Hydrology for Small Watersheds – TR-55. Technical Release 55 (TR-55) presents simplified procedures to calculate storm runoff volume, peak rate of discharge, hydrographs, and storage volumes required for floodwater reservoirs.
You can download the TR-55 Manual here. (2MB PDF format) You can download the complete software and documentation from the NRCS Tech Tools . For additional background information on the TR-55 calculations please see Understanding Hydrology or the "Hydrology" section of the training materials .
19 Ιουλ 2004 · WinTR-55 uses the TR-20 (NRCS, 2002) model for all of the hydrograph procedures: generation, channel routing, storage routing, and addition. Figure 1 is a diagram showing the WinTR-55 model, its relationship to TR-20, and the files associated with the model. Figure 1. WinTR-55 System Schematic TR-55 System TR-20 Model TR-20 Input File Name TR ...
A typical application of the NRCS method includes the following basic steps: Determination of curve numbers that represent different land uses within the drainage area. Calculation of time of concentration to the study point. Using the Type II or Type III rainfall distribution, total and excess rainfall amounts are determined.
Technical Release 55 (TR-55) presents simplified procedures for estimating runoff and peak discharges in small watersheds. In selecting the appropriate procedure, consider the scope and complexity of the problem, the available data, and the acceptable level of error.
19 Ιουλ 2004 · WinTR-55 is a single-event rainfall-runoff small watershed hydrologic model. The model generates hydrographs from both urban and agricultural areas and at selected points along the stream system. Hydrographs are routed downstream through channels and/or reservoirs.
