Distributed Hydrologic Model:
The tRIBS model is a fully-distributed hydrologic model based on a triangulated irregular network (TIN). It has been developed for simulation and forecasting of watershed hydrology using rainfall estimates from gauges, weather radar or numerical weather models. The tRIBS model is capable of simulating basin hydrology continuously while preserving high-resolution data from remote sensing and field measurements.
Regional Land Surface Hydrology Model:
The VIC model is a semi-distributed, macroscale land surface model that uses a grid-based simulation to solve full water and energy balances. It has been designed for application within coupled land-atmosphere-ocean general circulation models (GCMs). VIC is comprised of a simple three-layer characterization of the soil column and includes subgrid variability in land surface vegetation, soil moisture storage capacity as a spatial probability distribution, topography, precipitation, and base flow as a nonlinear recession. Streamflow outputs are routed separately from the land surface simulation, typically using the model of Lohmann et al., 1996 and 1998, implemented as RVIC.
TIAP is a set of Arc/Info AML scripts that facilitate the creation of triangulated irregular network models utilizing concepts of hydrologic similarity and slope preserving criteria. The software package provides various options for the user to generate computationally efficient terrain representations from high resolution DEM products. A direct use of the program is for incorporation of TIN terrain into distributed hydrologic models.