The Multistate Aquatic Resources Information System (MARIS) is an online resource that contains over one million fish sampling and water quality records for over one thousand fish species compiled from state fish and wildlife agency and other sampling programs. (Learn More)
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MARIS Status map - click on a state for more information
USGS Logo NJDFW Logo Maryland DNR logo Michigan DNR logo Sportfish Restoration Logo Minnesota DNR logo
Indiana DNR logo Wisconsin DNR logo Pennsylvania Fish and Boat Commission logo New York State DEC logo USFWS Logo WYGF Logo USFS Logo Georgia DNR Logo
Iowa DNR logo Illinois DNR logo Alabama Wildlife and Fisheries logo Florida Fish and Wildlife logo South Carolina Department of Natural Resources logo Tennessee Wildlife Resources Agency logo USDA NRCS Logo
SARP Logo ADEQ Logo LDWF Logo MDWFP Logo NCWRC Logo ODWC Logo
VADEQ Logo ODWC Logo KYDEP Logo

Download the entire MARIS database or selected states in various formats.
Download MARIS data
View a clickable map of every lake and stream surveyed by the MARIS partner agencies.
View Map of all MARIS point locations
Search Data
Search the MARIS database using several parameters and view the results.
Query MARIS