Effects of forest roads on flood flows in the Deschutes River, Washington

Hydrologic and geomorphic effects of forest roads. Special issue

Auteurs :
LA MARCHE, J.L.
LETTENMAIER, D.P.
LUCE, C.H.
WEMPLE, B.C.

Description :
Based on a field survey, the connectivity of culverts to the channel network was related primarily to hillslope curvature and distance to the natural stream channel. Culvert crest stage recorders operated during winters 1996/97 and 1997/98 demonstrated that higher flows occurred in ditches draining clearcuts compared to forested areas. Contrary to expectation, road cutslope height did not seem to affect culvert peak runoff. A distributed hydrologic model was used to evaluate road effects on peak flows in 9 subcatchments of the Deschutes River as well as the Deschutes main stem. Discussion of the results.


Type de document :
Article de monographie

Source :
Earth surface processes and landforms, issn : 0197-9337, 2001, vol. 26, n°. 2, p. 115-134, Collation : Illustration, Références bibliographiques : 16 ref.

Date :
2001

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley