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RECORD NUMBER: 735 OF 2320

OLS Field Name OLS Field Data
Main Title HYDROSIM. Computerized Graphical Stream Hydrograph Simulation.
Author Dun, Darrel E. ;
CORP Author Montana State Univ., Bozeman. Water Resources Research Center.
Year Published 1971
Report Number Rept. no. ;22; OWRR-A-048-MONT; 10434,; A-048-MONT(1)
Stock Number PB-210 589
Additional Subjects ( Watersheds ; Mathematical models) ; ( Montana ; Watersheds) ; Computer programs ; FORTRAN ; Hydrographic surveys ; Hydrometeorology ; Snowmelt ; Ground water recharge ; HYDROSIM computer program ; FORTRAN 4 programming language
Holdings
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Status
NTIS  PB-210 589 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 31p
Abstract
Drainage basin discharge may be simulated by treating the drainage basin as a storage-discharge phenomenon. Stream hydrograph analysis is used to estimate the position of a curve showing the relationship of discharge to expected values of storage. Hydrograph analysis is also used to estimate graphical relationships between a rainfall index and rainfall recharge of basin storage, and to estimate graphical relationships between a snowmelt index and snowmelt recharge of basin storage. Snowfall in the basin is also estimated from a weather index. These estimates are used in conjunction with a water budget equation to approximate a discharge hydrograph for the basin. The discharge hydrograph is computed by a FORTRAN IV program called HYDROSIM. The computed hydrograph is changed by trial and error adjustment of the aforementioned graphs until a satisfactory correspondence between simulated and real hydrographs is obtained. (Author)