G.H. Leavesley, P. Restrepo, L.G. Stannard, and M. Dixon, "The Modular
Hydrologic
Modeling System - MHMS", Proceedings of AWRA International Conference on
Managing Water Resources During Global Change, Reno, Nevada, Nov. 1-5, 1992.
this system includes an interface to GRASS, I believe.
REMOTE SENSING / GEOGRAPHIC INFORMATION SYSTEMS CENTER
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