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This is a list of rivers in the United States that have names starting with the letter M. For the main page, which includes links to listings by state, see List of rivers in the United States.
Ma Macatawa River - Michigan Machias River - Eastern Maine Machias River (Aroostook River) - Northern Maine Mackinaw River - Illinois Macoupin Creek - Illinois Mad River - California Mad River - Maine Mad River - Eastern New Hampshire Mad River - Central New Hampshire Mad River - Ohio Mad River - Vermont Mad River - Washington Madison River - Wyoming, Montana Magalloway River - Maine, New Hampshire Magothy River - Maryland Mahoning River - Ohio, Pennsylvania Maidford River - Rhode Island Maiford River - Rhode Island Malad River - Idaho Malad River - Idaho and Utah Malden River - Massachusetts Malheur River - Oregon Manasquan River - New Jersey Manatee River - Florida Manhan River - Massachusetts Manistee River - Michigan Manistique River - Michigan Manitowish River - Wisconsin Manitowoc River - Wisconsin Manumuskin River - New Jersey Mapes Creek - Washington Maple River - Iowa Maple River - Minnesota Maple River - North Dakota Maquoketa River - Iowa Marais des Cygnes River - Kansas, Missouri Marengo River - Wisconsin Marias River - Montana Marion River - New York Marmaton River - Kansas, Missouri Martin River - Alaska Marys River - Illinois Marys River - Oregon Mascoma River - New Hampshire Mashpee River - Massachusetts Maskerchugg River - Rhode Island Mat River - Virginia Matanuska River - Alaska Matanzas River - Florida Matfield River - Massachusetts Matta River - Virginia Mattapoisett River - Massachusetts Mattaponi River - Virginia Mattatuxet River - Rhode Island Mattole River - California Maumee River - Indiana, Ohio Maunesha River - Wisconsin Maurice River - New Jersey Maury River - Virginia Mayo River - Virginia, North Carolina Mazon River - Illinois
Mc McCloud River - California McElroy Creek - West Virginia McKenzie River - Oregon McKim Creek - West Virginia McNeil River - Alaska
Me Meade River - Alaska Meadow Creek - California Meadow River - West Virginia Meadow Valley Wash - Nevada Meathouse Fork - West Virginia Mecan River - Wisconsin Mechums River - Virginia Medicine Bow River - Colorado, Wyoming Medicine Lodge River - Kansas, Oklahoma Medina River - Texas Meduxnekeag River - Maine Meeme River - Wisconsin Meherrin River - Virginia, North Carolina Melozitna River - Alaska Melvin River - New Hampshire Mendenhall River - Alaska Menominee River - Michigan, Wisconsin Menominee River - Wisconsin, Illinois Menomonee River - Wisconsin Meramec River - Missouri Merced River - California Merrimack River - Massachusetts, New Hampshire Merrymeeting River - New Hampshire Meshik River - Alaska Metedeconk River - New Jersey Methow River - Washington Metolius River - Oregon Mettawee River - Vermont, New York
Mi Miami River - Florida Miami River - New York Miami River - Oregon Mianus River - Connecticut, New York Michigan River - Colorado Middle Branch Piscataquog River - New Hampshire Middle River - Iowa Middle River - Minnesota Middle River - Wisconsin Middle Fork River - West Virginia Middle Fork John Day River - Oregon Middle Fork Kentucky River - Kentucky Middle Fork Salmon River - Idaho Middle Fork South Platte River - California Middle Fork Vermilion River - Illinois Middle Fork Willamette River - Oregon Middle Island Creek - West Virginia Middle Santiam River - Oregon Miles River - Maryland Milk River (Alberta–Montana) - Montana Mill Creek - southern California Mill Creek - Tehama County, California Mill Creek - Ohio Mill Creek - West Virginia Mill River - Connecticut Mill River (Northampton, Massachusetts) - western Massachusetts Mill River (Massachusetts – Rhode Island) - Massachusetts, Rhode Island Mill River (Taunton River) - southeastern Massachusetts Millers River - New Hampshire, Massachusetts Millers River - Rhode Island Mills River - North Carolina Millstone River - New Jersey Milwaukee River - Wisconsin Mimbres River - New Mexico Minam River - Oregon Mineral River - Michigan Mink River - Wisconsin Minnehaha Creek - Minnesota Minnesota River - Minnesota Mishnock River - Rhode Island Mispillion River - Delaware Mission River - Texas Missisquoi River - Vermont Mississinewa River - Indiana Mississippi River - Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana Missouri River - Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri Misteguay Creek - Michigan Mitchell River - Massachusetts Mitchell River - North Carolina Mitchigan River - Michigan
Mo Mobile River - Alabama Mohawk River - New Hampshire Mohawk River - New York Mohawk River - Oregon Mohican River - Ohio Mohlendorph Creek - Washington Mojave River - California Mokelumne River - California Molalla River - Oregon Monatiquot River - Massachusetts Monday Creek - Ohio Monocacy River - Maryland Monongahela River - West Virginia, Pennsylvania Montello River - Wisconsin Montreal River - Michigan Keweenaw Peninsula Montreal River - Michigan-Wisconsin border Moormans River - Virginia Moose River - New Hampshire Moose River - New York Moose River - Wisconsin Moosup River - Rhode Island, Connecticut Moreau River - South Dakota Moshassuck River - Rhode Island Mosquito Creek - Iowa Moswansicut River - Rhode Island Mount Hope River - Connecticut Mountain Fork - Arkansas, Oklahoma Mousam River - Maine Mowich River - Washington Moxahala Creek - Ohio Moyie River - Idaho, British Columbia
Mu Muckalee Creek - Georgia Mud River - Kentucky Mud River - West Virginia Muddy Creek - Colorado Muddy Creek - Utah Muddy River - Nevada Mukwonago River - Wisconsin Mulberry Creek - Alabama Mulberry Fork of the Black Warrior River - Alabama Mulberry River - Arkansas Mulchatna River - Alaska Mullet River - Wisconsin Mullica River - New Jersey Mumford River - Massachusetts Muncy Creek - Pennsylvania Murderkill River - Delaware Muscatatuck River - Indiana Musconetcong River - New Jersey Muskegon River - Michigan Muskingum River - Ohio Musselshell River - Montana Mustinka River - Minnesota
My Myakka River - Florida Mystic River - Connecticut Mystic River - Massachusetts