The core model in WaterWare is WRM a dynamic water budget model,
that uses an "arbitrary resolution" topological network representation
of one or more river basins (more generally: hydraulicalle interconnected water resources system).
This representation of a network of NODES and REACHES receives its primary, dynamic (daily to hourly)
input from time series of hydro-meteorological date, assigned to the NODES of the network.
These time series represent historical (observation or re-analysis) data, or are generated in real-time
with prognostic meteorological models (3D, dynamic, hourly and 1-3 km resolution) like MM5 or WRF.
These models are used for the "dynamic downscaling" from global wather data/forecasts (NOAA/ENCEP, FNL and GFS).
Specific "external" models that can be used separately in their own right
describe two of the most important NODES: rainfall-runoff (RRM) for catchments, and IWD to estimate
irrigation water demand. For other nodes, simple models are "embedded" in WRM,
but since the inter-model communication is based on a shared time series data base,
other, more complex and detailed models can be used to provide these time series, representing the respective NODES.
Other more complex NODES are reservoirs, lateral catchments, wetlands, or aquifers underlying the topological network.
A number of basic geometry NODES cover diversions (natural or pumped) and confluences or monitoring points.
Based on the dynamic water budget (daily, hourly) water quality models (STREAM for the entire network, SPILL for local
high-resolution representataion of the river just below major point-sources or
accidental spills) act as post-processors of WRM.
Yet another level in the moedl cascade is provided by the Multi-criteria OPTIMIZATION
and associated discrete multi-criteria DSS. this combines the physical water (flow, level, quality) data and
economic assessment of demand/use and supply, flood damage, ind in-strem uses,
including non-market (contingent or expert) valuation.
Auxiliary models include a 2/3 D distributed rainfall-runoff/flooding model,
a model of landd use/cover dynamic (basin development) and related WELMM analysis,
and a rule-based expert system for screening level Environmental Impact Assessment (EIA)
for water resources development projects. Optional2D and 3D groundwater models can add to, or replace
the build-in simple aquifer representation. Atmospheric models for the "airshed"
can estimate nutrient imports to the basin by dry and wet deposition.
Finally, a 3D ocean model (POMS) can be linked to describe
coastal water quality at/around the river mouth, or any coatstal outfall point.