Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title HYDRA: Dynamic Model for Urban Hydrologic Systems.
Author Surka, Alvin J. ;
CORP Author Nebraska Univ., Lincoln. Water Resources Research Inst.
Year Published 1973
Report Number DI-14-31-0001-3611; OWRR-B-016-NEB; 13012,; B-016-NEB(2)
Stock Number PB-222 486
Additional Subjects ( Urban areas ; Hydrology) ; ( Surface water runoff ; Hydrology) ; Mathematical models ; Computer programs ; Rainfall intensity ; Computerized simulation ; FORTRAN ; Urban hydrology ; Storm water runoff ; HYDRA computer program ;
Library Call Number Additional Info Location Last
NTIS  PB-222 486 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 157p
The design and application are described of HYDRA, a new package of computer programs designed for the detailed modeling of the routing of water in converging channel networks. Geometric characteristics of intricate systems consisting of arbitrarily large numbers of channel segments can be considered. Accounted for in the simulation model are the relationships of the channel segments to each other, to surrounding areas, and to the rainfall variations and/or movement of storms. Storms are described as regions enclosed by boundaries approximated by any arbitrary number of polygon sides. The degree of detail with which either the network or storm patterns are defined may be chosen by the user. Results from this modeling package include, for finite storm events, the runoff rate and accumulated rainfall at any specified point on the network. (Modified author abstract)