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Fish Passage Decision Support System
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Go to the FPDSS's interactive map viewer.

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    • Welcome
    The Fish Passage Decision Support System (FPDSS) is an online application funded by the U.S. FWS Fish Passage Program. The FPDSS makes information about barriers to fish passage in the U.S. available to policy makers and the public.
    Barrier Removal Modeling
    Model the removal of a barrier to fish passage. The modeling operation can model fish passage both upstream and downstream of the barrier.
    Area Profile
    Create a profile report about a geographic area. Information returned includes maps of the area, barrier summary information, and hydrology.
    Featured Fish Passage Program Project
    Project Name:Coloso Dam on the Culebrinas River, Puerto Rico
    FWS Region:Southeast
    Year Completed:2001
    Description:
    Since the 1930s, the Coloso Dam on the Culebrinas River has impeded or blocked access to river habitat. A preliminary fishway design is being developed for this 10-foot-high barrier located 1.5 miles upstream from the mouth of the Culebrinas River.
    Benefits:
    Construction of a fishway will open access to 130 miles of river habitat for American eel, river goby, Sirajo goby, mountain mullet, and thirteen species of migratory shrimp.
    		Image from project Coloso Dam on the Culebrinas River, Puerto Rico