Services on Demand
Journal
Article
Indicators
- Cited by SciELO
- Access statistics
Related links
- Similars in SciELO
Share
Tecnología y ciencias del agua
On-line version ISSN 2007-2422
Abstract
CAMPOS-ARANDA, Daniel Francisco. Design envelopes estimation by hydrological subregion. Tecnol. cienc. agua [online]. 2011, vol.2, n.4, pp.175-194. ISSN 2007-2422.
Design flood estimation in ungauged watersheds is very common. The use of envelope curves with return periods estimated by hydrological subregion is perhaps the simplest regional method for obtaining the necessary predictions. This work describes the 6 steps of the suggested procedure in detail: (1) subregion definition; (2) critical screening of the data; (3) statistical verification of the data; (4) subregional homogeneity verification; (5) prediction estimates, and; (6) calculation of fit coefficients for the envelope curves design. Creager, Lowry and Francou-Rodier envelope curves were utilized. The application of the above procedure is also explained in some detail for 5 Mexican subregions. Results are analyzed and conclusions are formulated that indicate the advantages of working by subregion and the ease of verifying reliable results when they are consistent.
Keywords : envelopes curves; discordances; Langbein test; probability distributions; hydro-logical regions.