Runoff Grouping for Detection of Change in Runoff

by Hiroshi Nakamichi, Hydr. Engr.; Planning Div., Chugoku-Shikoku, Nosei-kyoto, 9-24 Tenjin-cho, Okayama-shi, Japan,
Hubert J. Morel-Seytoux, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Colorado State Univ., Fort Collins, CO,


Serial Information: Journal of the Irrigation and Drainage Division, 1971, Vol. 97, Issue 2, Pg. 275-290


Document Type: Journal Paper

Abstract: The purpose of this study was the determination of suitable watersheds or combinations of watersheds for precipitation management programs in the upper Colorado River Basin in general and more particularly for the San Juan Mountains. The study shows that the introduction of optimal weight factors in the linear combination of runoff from several basins will reduce significantly the number of years necessary for evaluation of the operations. The attainment of a 20% increase in winter precipitation will permit evaluation within the planned duration (4 yr–5 yr) of the experiments.

Subject Headings: Runoff | Watersheds | Basins | Precipitation | Linear functions | Winter | Rivers and streams | Mountains | Colorado River

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