Once a tributary has been identified as a priority with input from the
state and other interests, the modeling effort is conducted in three stages:
The first task of this stage is to compile available data and information
about the watershed (e.g., land use data, soil characteristics, hydrologic
and hydraulic data, etc.). The next task is to establish a watershed team
made up of state, tribal, and local agencies and organizations with interest
in soil conservation, non-point source pollution prevention, remediation and
navigation to help guide model development and application. The Corps uses
this input to determine what modeling tools are most appropriate based on
the intended uses and user capabilities. A scoping report is then prepared
which describes the proposed model development and technology transfer. In
general, the scoping stage is completed in less than a year.
In most cases, this program has applied existing models or has used "off
the shelf" modeling tools that have been developed by the Corps' district
office or its contractors. Where local universities or other federal agencies
have existing models that may be utilized, the Corps has provided funding
to these organizations to build on existing tools. In some cases, proprietary
models have been used in the past; however, this method is not preferred.
This program has not been used for research or the development of entirely
new modeling tools. As directed by the authorizing legislation, tributary
modeling tools must be developed using existing information. This phase of
the project is generally completed in a timeframe of one to two years.
After a modeling tool has been developed, the Corps holds a technology transfer
workshop to provide training to stakeholders from the watershed. Participants
are provided the modeling software and user information at no cost. For each
tributary, a final report is developed to document modeling activities and
information on the watershed obtained through this effort. These technology
transfer workshops also facilitate a dialogue on resource issues among diverse
groups and, in some cases, foster new partnerships.