Abstract

Easily-calculated metrics describing potential impacts of dams are often used as preliminary investigations, or in analyses describing hydrologic impact over large scales and involving many dams. However, common dam impact metrics overwhelmingly reflect effects of medium to large reservoirs. Indicators applied to describe a dam’s capacity to alter downstream river flows typically consider reservoir storage as a sole mechanism of hydrologic impact. Herein, metrics of hydraulic size are proposed to encompass potential impacts related to both storage and diversion of water. Hydrologic effect due to storage and diversion computed across a sample of diversion and non-diversion dams exemplifies that hydrologic alteration related to diversion may be significant, even where storage-based indicators suggest that potential for hydrologic impact is low. As compared to metrics based on storage alone, the proposed metrics offer a more flexible and inclusive description of hydrologic impact and one which is more universally applicable to dams of variable design and purpose.

Publication Date

11-2-2017

Number of Pages

4 pages

Document Type

Paper

Language

English

Volume

1

Issue

4

Publication Title

International Journal of Hydrology

College

College of Engineering and Computer Science

First Page

20

Last Page

23

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