Record Display for the EPA National Library Catalog

RECORD NUMBER: 825 OF 2320

OLS Field Name OLS Field Data
Main Title Investigation of Time Parameter of Watersheds.
Author Ch, Shu Tung ; Lytl, William F. ;
CORP Author South Dakota State Univ., Brookings. Water Resources Inst.
Year Published 1971
Report Number OWRR-A-023-SDAK; 14918,; A-023-SDAK(1)
Stock Number PB-212 384
Additional Subjects ( Watersheds ; Surface water runoff) ; South Dakota ; Floods ; Hydrography ; Rainfall ; Correlation techniques ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-212 384 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 33p
Abstract
The base width of instantaneous unit hydrograph -- the time of base for thrity-five watersheds in South Dakota is investigated. This time parameter is correlated with the measurable physical properties of watersheds. A formula equation was derived which correlates the peak runoff and the duration of rainfall excess for a variable rainfall excess pattern. This formula augments theoretical developments in applying the ideas of unit hydrography theory and time of base to analyze runoff data. Based upon this correlation, a new method is developed to determine the flood discharge for ungaged watersheds with area less than 500 sq. miles in South Dakota. (Author)