Roughness coefficients for routing surface runoff
Material type:
ArticleLanguage: En Publication details: 1986Subject(s):
In:
Journal of Irrigation and Drainage Engineering v. 112, no. 1, p. 39-53615320Summary: Hydraulic roughness coefficients have been derived from runoff plot data originally collected for erosion studies. The data were collected from differentagricultural and natural surfaces by applying constant rainfall rates from rainfall simulators. The derived roughness coefficient is actually an "effective" roughness coefficient that includes: the effect of raindrop impact; the effect of channelization of flow; the effects of obstacles such as litter, crop ridges, rocks, and roughness from tillage; the frictional drag over the surface; and the erosion and transport of sediment. A ready reference of friction factors for overland flow is presented in
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | Reprints Collection | REP-3953 (Browse shelf(Opens below)) | 1 | Available | 615320 |
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| REP-3950 Review DRIS as a part of a routine plant analysis program | REP-3951 Rice and corn technology and policy in the Philippines | REP-3952 The right to food: | REP-3953 Roughness coefficients for routing surface runoff | REP-3954 Row-column a-designs | REP-3955 Row spacing and cereal crop yield | REP-3956 Seed saving our crop genetic heritage |
Tables. graphs, references p. 52-53
Hydraulic roughness coefficients have been derived from runoff plot data originally collected for erosion studies. The data were collected from differentagricultural and natural surfaces by applying constant rainfall rates from rainfall simulators. The derived roughness coefficient is actually an "effective" roughness coefficient that includes: the effect of raindrop impact; the effect of channelization of flow; the effects of obstacles such as litter, crop ridges, rocks, and roughness from tillage; the frictional drag over the surface; and the erosion and transport of sediment. A ready reference of friction factors for overland flow is presented in
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