Environmental Engineering Reference
In-Depth Information
Fig. 10.11
Observed versus modeled monthly TN for the simulation period
Fig. 10.12
Observed versus modeled monthly TP for the simulation period
Efficient reductions may also be achieved by targeting both nitrogen and phos-
phorus sources in close proximity to large rivers.
10.5 Summary
The purpose of this study was to develop an integrated watershed and riverine
modeling system and use this integrated modeling system to study the transport
and fate of nutrients in a large scale river basin. The SWAT model and the HEC-
RAS model were loosely integrated so that output from the watershed model
became input into the riverine model. The model integration considers spatial and
temporal characteristics of the watershed systems, correspondence and transfer-
ence of the state variables between two models, and file format specifics for proper
communications between the models.
 
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