surface detention

surface detention

[′sər·fəs di‚ten·chən]
(hydrology)
Water in temporary storage as a thin sheet over the soil surface during the occurrence of overland flow.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Mentioned in ?
References in periodicals archive ?
Runoff is that portion of the precipitation that flows overland toward stream channels, lakes, or oceans after the demands of interception, evapotranspiration, infiltration, surface storage, and surface detention are satisfied.
This thin layer of water is called surface detention. After surface detention storage is satisfied, overland flow or runoff begins.
The 1997 flood in the Red River Valley, southern Manitoba, provides a case study of such exaggeration of flooded areas by surface detention of pre-flood storm runoff.
Because of this surface detention of water, estimated flooded area on 27 April (2,994 [km.sup.2]) seems to be exaggerated.
Cover crops affect hydrology through their impact on the soil and the soil/atmosphere interface where precipitation is partitioned between infiltration, surface storage, surface detention, and runoff rates and amounts.
With the North Central Expressway corridor fully developed, no sites were available for surface detention. Another storage possibility, oversizing the SDHPT conduit for in-line detention, turned out to be an uneconomic approach.

Full browser ?