Maryland River Flow Rates & Stream Gauge Data
Live USGS stream gauge data for Maryland — current CFS flow rates, gauge heights, water temperatures, and wading conditions for Maryland rivers and streams. Updated every 15 minutes. Know before you go.
Planning with Maryland river conditions
Browse USGS monitoring stations across Maryland rivers and streams. Each gauge page
shows current readings plus 7, 14, and 30-day flow-rate charts with condition indicators.
Compare the station name and location with your intended reach, then use the recent trend
alongside the current reading. Rain, snowmelt, dams, tributaries, and the distance between
stations can produce different conditions on the same river.
Plan seasonal fly selection with the Maryland hatch chart .
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Browse all monitoring stations Antietam Creek Near Sharpsburg, Md — USGS 01619500 Antietam Creek Near Waynesboro, Pa — USGS 01619000 Arrowhead Run At Thayerville, Md — USGS 03075850 Baisman Run At Broadmoor, Md — USGS 01583580 Bear Creek At Friendsville, Md — USGS 03076600 Beaver Run Near Finksburg, Md — USGS 01586210 Beaverdam Creek Near Cheverly, Md — USGS 01651730 Beaverdam Run At Cockeysville, Md — USGS 01583600 Beetree Run At Bentley Springs, Md — USGS 01581960 Bennett Creek At Park Mills, Md — USGS 01643500 Big Elk Creek At Elk Mills, Md — USGS 01495000 Big Pipe Creek At Bruceville, Md — USGS 01639500 Birch Branch At Showell, Md — USGS 0148471320 Bottle Branch At Berlin, Md — USGS 01484716 Bynum Run At Bel Air, Md — USGS 01581500 Bynum Run Near Abingdon, Md — USGS 01581590 Cabin Branch Near Boyds, Md — USGS 01644380 Casselman River At Grantsville, Md — USGS 03078000 Catoctin Creek Near Middletown, Md — USGS 01637500 Cattail Creek Near Glenwood, Md — USGS 01591400 Cherry Creek At State Park Road Near Mchenry, Md — USGS 03075905 Ches Bay At Mouth Of Susq R At Havre De Grace, Md — USGS 01580620 Chesterville Branch Near Crumpton, Md — USGS 01493112 Chicamacomico River Near Salem, Md — USGS 01490000 Choptank River Near Greensboro, Md — USGS 01491000 Conococheague Creek At Fairview, Md — USGS 01614500 Cranberry Branch Near Westminster, Md — USGS 01585500 Dead Run At Franklintown, Md — USGS 01589330 Dead Run At Woodlawn, Md — USGS 01589315 Dead Run Near Catonsville, Md — USGS 01589312 Dead Run Tributary At Woodlawn, Md — USGS 01589320 Dead Run Tributary Near Woodlawn, Md — USGS 01589316 Deer Creek At Eden Mill Dam Near Pylesville, Md — USGS 01579905 Deer Creek At Rocks, Md — USGS 01580000 Deer Creek Near Darlington, Md — USGS 01580520 East Branch Herbert Run At Arbutus, Md — USGS 01589100 Fishing Creek At Mountaindale, Md — USGS 01641501 Foster Branch Near Joppatowne, Md — USGS 01585075 Georges Creek At Franklin, Md — USGS 01599000 Georges Run Near Beckleysville, Md — USGS 01581870 Grave Run Near Beckleysville, Md — USGS 01581830 Gunpowder Falls At Glencoe, Md — USGS 01582500 Gunpowder Falls At Hoffmanville, Md — USGS 01581810 Gunpowder Falls Near Parkton, Md — USGS 01581920 Gwynns Falls At Villa Nova, Md — USGS 01589300 Gwynns Falls At Washington Blvd At Baltimore, Md — USGS 01589352 Gwynns Falls Near Delight, Md — USGS 01589197 Hawlings River Near Sandy Spring, Md — USGS 01591700 Herring Run At Sinclair Lane At Baltimore, Md — USGS 01585219 Honeygo Run Near White Marsh, Md — USGS 01585104 James Run Near Belcamp, Md — USGS 01581649 Jones Falls At Sorrento, Md — USGS 01589440 L Pax Riv Trib Above Lake Elkhorn Nr Guilford, Md — USGS 01593450 L Pax Riv Trib Above Wilde Lake At Columbia, Md — USGS 01593370 Licking Creek At Pectonville, Md — USGS 01613525 Linganore Creek At Linganore Rd Near Frederick, Md — USGS 01642600 Little Falls At Blue Mount, Md — USGS 01582000 Little Gunpowder Falls At Laurel Brook, Md — USGS 01584500 Little Patuxent River At Guilford, Md — USGS 01593500 Little Patuxent River At Savage, Md — USGS 01594000 Little Seneca Creek Tributary At Brink, Md — USGS 01644372 Little Seneca Creek Tributary Near Clarksburg, Md — USGS 01644371 Little Seneca Creek Tributary Near Germantown, Md — USGS 01644375 Long Green Creek At Glen Arm, Md — USGS 01584050 Long Quarter Branch At Lutherville, Md — USGS 01583800 Manokin Branch Near Princess Anne, Md — USGS 01486000 Marsh Run At Grimes, Md — USGS 01617800 Mattawoman Creek Near Pomonkey, Md — USGS 01658000 Mcintosh Run Near Leonardtown, Md — USGS 01661350 Meetinghouse Branch At Camp Springs, Md — USGS 01653620 Minebank Run Near Glen Arm, Md — USGS 0158397967 Monocacy River At Bridgeport, Md — USGS 01639000 Monocacy River At Jug Bridge Near Frederick, Md — USGS 01643000 Monocacy River At Monocacy Blvd At Frederick, Md — USGS 01642190 Monocacy River Near Dickerson, Md — USGS 01643580 Moores Run At Radecke Ave At Baltimore, Md — USGS 01585230 Morgan Creek Near Kennedyville, Md — USGS 01493500 Morgan Run Near Louisville, Md — USGS 01586610 Nassawango Creek Near Snow Hill, Md — USGS 01485500 North Branch Patapsco River At Cedarhurst, Md — USGS 01586000 North Branch Potomac River At Kitzmiller, Md — USGS 01595500 North Branch Potomac River At Luke, Md — USGS 01598500 North Branch Potomac River At Steyer, Md — USGS 01595000 North Branch Potomac River Near Cumberland, Md — USGS 01603000 North Glade Run Near Swanton, Md — USGS 03075825 Northeast Branch Anacostia River At Riverdale, Md — USGS 01649500 Northwest Branch Anacostia River At Brentwood, Md — USGS 01651003 Northwest Branch Anacostia River Nr Colesville, Md — USGS 01650500 Octoraro Creek Near Richardsmere, Md — USGS 01578475 Paint Branch Near College Park, Md — USGS 01649190 Paint Branch Tributary Near Colesville, Md — USGS 01649150 Patapsco River At Hollofield, Md — USGS 01589000 Patapsco River Near Catonsville, Md — USGS 01589025 Patapsco River Near Elkridge, Md — USGS 01589035 Patuxent R At Gov Bridge Natural Area Nr Bowie Md — USGS 01594441 Patuxent River Below Brighton Dam Near Brighton Md — USGS 01591610 Patuxent River Near Bowie, Md — USGS 01594440 Patuxent River Near Laurel, Md — USGS 01592500 Patuxent River Near Unity, Md — USGS 01591000 Piney Run At Dover, Md — USGS 01583100 Piscataway Creek At Piscataway, Md — USGS 01653600 Piscataway Creek At Woodyard, Md — USGS 01653560 Piscataway Creek Trib At Joint Base Andrews, Md — USGS 01653522 Plumtree Run Near Bel Air, Md — USGS 01581752 Pocomoke River Near Willards, Md — USGS 01485000 Pond Branch At Oregon Ridge, Md — USGS 01583570 Potomac River At Burkittsville Rd At Brunswick, Md — USGS 01636765 Potomac River At Edwards Ferry Near Poolesville,Md — USGS 01644148 Potomac River At Hancock, Md — USGS 01613000 Potomac River At Harpers Ferry, Wv — USGS 01620000 Potomac River At Paw Paw, Wv — USGS 01610000 Potomac River At Point Of Rocks, Md — USGS 01638500 Potomac River Near Wash, Dc Little Falls Pump Sta — USGS 01646500 Red Run Near Owings Mills, Md — USGS 01589230 Sallie Harris Creek Near Carmichael, Md — USGS 01492500 Sams Creek At Mckinstrys Mill, Md — USGS 01640152 Savage Riv Bl Savage Riv Dam Near Bloomington, Md — USGS 01597500 Savage River Near Barton, Md — USGS 01596500 Sawmill Creek At Glen Burnie, Md — USGS 01589500 Scotts Level Branch At Rockdale, Md — USGS 01589290 Seneca Creek At Dawsonville, Md — USGS 01645000 Sideling Hill Creek Near Bellegrove, Md — USGS 01610155 Sligo Creek Near Takoma Park, Md — USGS 01650800 Soper Branch At Hyattstown, Md — USGS 01643395 South Fork Jabez Branch At Millersville, Md — USGS 01589795 St Clements Creek Near Clements, Md — USGS 01661050 St Marys River At Great Mills, Md — USGS 01661500 Susquehanna River At Conowingo, Md — USGS 01578310 Susquehanna River Near Darlington, Md — USGS 01579550 Swan Creek At Swan Creek, Md — USGS 01580700 Tenmile Creek Near Boyds, Md — USGS 01644390 Tenmile Creek Near Clarksburg, Md — USGS 01644388 Tonoloway Creek Near Hancock, Md — USGS 01613095 Town Creek Near Oldtown, Md — USGS 01609000 Tributary To Dead Run Tributary At Woodlawn, Md — USGS 01589317 Tuckahoe Creek Near Ruthsburg, Md — USGS 01491500 Turkey Branch Near Rockville, Md — USGS 01647850 Unicorn Branch Near Millington, Md — USGS 01493000 West Branch Herring Run At Idlewylde, Md — USGS 01585200 Western Branch At Upper Marlboro, Md — USGS 01594526 Western Run At Western Run, Md — USGS 01583500 Wheel Creek Near Abingdon, Md — USGS 0158175320 Whitemarsh Run At White Marsh, Md — USGS 01585100 Whitemarsh Run Near Fullerton, Md — USGS 01585090 Wills Creek Near Cumberland, Md — USGS 01601500 Winters Run Near Bel Air, Md — USGS 01581750 Winters Run Near Benson, Md — USGS 01581700 Youghiogheny River At Friendsville, Md — USGS 03076500 Youghiogheny River Near Mchenry, Md — USGS 03076100 Youghiogheny River Near Oakland, Md — USGS 03075500 Youghiogheny River Near Swallow Falls Park, Md — USGS 03075590 Zekiah Swamp Run Near Newtown, Md — USGS 01660920