Hydrology: Urban

Authored by: C. Rhett Jackson

Encyclopedia of Natural Resources

Print publication date:  July  2014
Online publication date:  June  2014

Print ISBN: 9781439852583
eBook ISBN: 9781351043847
Adobe ISBN:

10.1081/E-ENRW-120042089

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Abstract

Urbanization reduces the cumulative volume of water storage provided by soils and vegetation, increases the fraction of rainfall that becomes surface runoff during storms, creates structures to hasten the movement of runoff to streams, reduces evaporation, and increases watershed yield. Protecting the hydrology and water quality of streams in newly urbanizing basins requires comprehensive implementation of structural and non-structural mitigation including but not limited to retention of natural vegetation, minimization of impervious surfaces, low impact site design, rain gardens, detention and infiltration facilities, and water quality treatment. The maximum possible extent of urbanization that can be accomodated while protecting local streams is uncertain.

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