Hydrodynamic and Water Quality Modeling of Lake Roosevelt


Water temperature and total dissolved gas (TDG) in the Columbia River is strongly influenced by the storage and release of water from projects like Grand Coulee Dam. Previous work has produced a temperature model (CE-QUAL-W2) of Lake Roosevelt for the purpose of informing in-season watershed management decisions to reduce take and to allow the evaluation of various operational and structural alternatives that can influence the regulation of water flow and temperature. The purpose of this project is to update the aforementioned Lake Roosevelt CE-QUAL-W2 model to also simulate TDG. This data may then be used as input to downstream Columbia River System water quality models. This capability is to assist in real-time decision making, and investigate alternatives to reduce total mass loading of TDG at Bonneville Dam while maintaining juvenile survival performance.

General information about this opportunity
Last Known Status
Program Number
Federal Agency/Office
Agency: Department of the Interior
Office: Bureau of Reclamation
Type(s) of Assistance Offered
Cooperative Agreement
Number of Awards Available
What is the process for applying and being award this assistance?
Other Assistance Considerations
Formula and Matching Requirements
This program does not have cost sharing or matching requirements.
Who do I contact about this opportunity?
Headquarters Office
Melinda Ritacco, Grants Officer, 208-378-5103
Website Address
E-mail Address
Financial Information
Range and Average of Financial Assistance
Awards range from $1.00 to $49,590.00


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