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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environme... : First test of calculate natural run-off modified by precipitation anomaly in conchos river watershed...
First test of calculate natural run-off modified by precipitation anomaly in conchos river watershed (mexico)
Author : Enrique A. Sánchez-Camacho
Each time are more evident the effects of a climate modification, before this situation in different places has began investigations with regard to theme with records and informaticsnumeric tools that are available, maybe the most extensive exercise know and recent is the fourth report from IPCC. he present work shows a first approximation of the variation on precipitation in a watershed located on the North of Mexico; zone where foresee an important impact of the climatic change on precipitation variable. or the exercise Conchos' river watershed has chosen, that is the watershed with the most contribution inside the watershed of Bravo's river of Mexican part, the watershed was subdivided in five sub basins and inside each one of stations with records of precipitation within 1961-1989 was located. Located the climatologic stations and with support of the anomaly results for precipitation of 16 general models of circulation, their records was modificated to obtain an estimated for climatic change on precipitation variable. The corresponding polygons of Thiessen were draw up for each station and period, with the aim of obtain the influence area to each climatologic station. In order to obtain run off was used the methodology development by Soil Conservation Service (SCS, actually Natural Resources Conservation Service - NRCS). With this previous work calculation of runoff was made, with and without impact by climatic change, our first results to point out an average variation of the low approximately two percent.

File Size : 269,805 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environments
Date Published : 09/08/2009
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