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Project STREAM

An interactive mapping profile on the Lower Mississippi Alluvial Valley
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  • An image from the Project STREAM mapping system
    photo by Ducks Unlimited
Image of

The System for Targeting Restoration and Enhancing Aquatic Monitoring (STREAM) Decision Support System and some of its component datasets as accessible on this page were funded in large part by the USDA Forest Service for the Restoring the Delta Large-scale Watershed Restoration Program.

The information accessible through this system is unsuited for, and shall not be used for, any regulatory purpose of action, nor shall any component thereof be the basis for any determination relating to impact assessment or mitigation. The data contained herein were developed solely for regional conservation planning purposes. Any use of this Information is to be made at the sole risk of the user(s).

Any user who wishes to include results derived from this system in publication or presentation must first acquire consent from Ducks Unlimited and must credit Ducks Unlimited and the USDA Forest Service as the source. For additional information about the system, data, or component projects, please contact us.


The Lower Mississippi Alluvial Valley, the formerly diverse 25-million-acre floodplain ecosystem through which 41% of the conterminous United States drains, exhibits severe water quality impairment, ranging from high turbidity and elevated nutrient loads to high pesticide concentrations, including residual DDT and Toxaphene. In order to advance the LMAV's watershed planning capabilities, Ducks Unlimited developed a web-deployed water quality enhancement Decision Support System (DSS) utilizing Geographic Information System and Remote Sensing technologies. DU utilized satellite imagery to demonstrate a replicable and cost-efficient method to estimate changes in turbidity across water bodies throughout the LMAV. Within the LMAV, turbidity serves as a useful indicator of the presence of sediment-bound pollutants. In addition, DU also developed and compiled a suite of watershed characterization tools to aid in the assessment of conditions within and across watersheds. Water quality planners and project delivery agents can access these powerful geographic analysis tools via an Internet Map Server.

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