Abstract

CAMPOS-ARANDA, D.F.. N Number Identification Through the TUH Method, in Seven Watersheds of the Upper Grijalva River, in Mexico. Ing. invest. y tecnol. [online]. 2011, vol.12, n.3, pp.269-276. ISSN 2594-0732.

The complexity of the hydrological processes involved in flood generation is pointed out. Hence, the calibration or identification of any flood prediction method will always be an action to help build a more accurate estimation. First, the triangular unit hydrograph (TUH) method is described briefly, the design storm estimation with base in the Chen formula and the necessary strategy for N number identification are described in detail, associated to each one of the six recurrence intervals processed. The calibration was made in seven rural watersheds of the Hydrological Region Núm. 30 Partial (upper Grijalva river), with watershed areas varying from 190 to 4,768 km². Next, the different factors which affected the results are listed. Lastly, conclusions are formulated pointing out the importance of the numerical results of this study and their regional systematic application in the flood estimation processes in watershed without hydrometric data.

Keywords : triangular unit hydrograph; Chen formula; predictions of daily rainfall; predictions of maximum flows.

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