Record Display for the EPA National Library Catalog


Main Title Mechanism of Direct Runoff from Rainfall.
Author Garto, James E. ;
CORP Author Oklahoma Water Resources Research Inst., Stillwater.
Year Published 1970
Report Number DI-14-01-0001-806; OWRR-A-006-OKLA; 06264,; A-006-OKLA(2)
Stock Number PB-198 234
Additional Subjects ( Surface water runoff ; Rainfall) ; ( Channels(Waterways) ; Design) ; Channel flow ; Vegetation ; Channel improvements ; Slopes ; Flow rate ; Correlation techniques ; Mathematical models ; Roughness ; Simulation ; Uniform flow ; Manning formula ; Hydraulics ; Dimensional analysis ; Tables(Data) ;
Library Call Number Additional Info Location Last
NTIS  PB-198 234 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 24p
Information is sparse on the retardance of flow through upright stems of vegetation. Studies were conducted on a smooth flume in which cylindrical retardance elements were inserted at various regular spacings. The effects of pattern of spacing, diameter of elements, spacing of elements, slope and flow rate on Manning's coefficient were determined. Linear, quadratic and logarithmic response surfaces were calculated. Multiple correlation coefficients usually greater than 0.97 were obtained. The linear multi-variable model and the exponential model gave comparable standard deviations. A quadratic model gave slightly improved estimates, but it results in a more complex equation with eleven coefficients. (Author)