Learn about stars here

State Summary

Level Legend: Running Below Minimum Recommended Flow Above Maximum Recommended Flow Unknown
Descriptions of reaches with River Name in bold have been verified by a regional StreamTeam member.

State River Name/Section Class Level Rel. Level Updated
MD Anacostia, Northwest Branch— US Rte 29 to Riggs Road I-III(V+) 160 cfs   low 5/16 21:30
MD Antietam Creek— 1) Upper: Oak Bridge to Hwy.68 I-II 4.21 feet   med 5/16 16:00
MD Antietam Creek— 2) Hwy.68 to Potomac River I-II 4.21 ft   med 5/16 16:00
MD Bear Creek— U.S. 219 to Youghiogheny River at Friendsville IV 430 cfs   med 5/16 21:30
MD Beaver Creek— Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 4.21 ft   med 5/16 16:00
MD Bennett Creek— MD Route 355 to Monocacy River I-II 226 cfs   med 5/16 22:30
MD Big Elk Creek— PA Route 341 to Elkton I-II 189 cfs   med 5/16 21:45
MD Broad Creek— MD Route 136 to MD Route 623 I-II
MD Cabin John Creek— River Road to Potomac II-III 179 cfs   low 5/16 22:15
MD Casselman— MD Route 495 to Salisbury, Pennsylvania I-II 616 cfs   5/16 19:00
MD Casselman, N. Branch— Dung Hill Road to Maryland Route 485 I-III+ 2.80   med 5/16 19:00
MD Catoctin Creek— US 40 to Potomac River I-II 2.79 ft   med 5/16 20:30
MD Conowingo Creek— Oakwood to Susquehanna River IV-V
MD Crabtree Creek— Swanton, MD to Savage Reservoir III-IV+ 304 cfs   low 5/16 22:15
MD Deep Creek— Dam to Youghiogheny River V
MD Deer Creek— Bond Road to Susquehanna River I-III 3.12 ft   med 5/16 20:00
MD Evitts Creek— Lake Gordon Dam (PA) to Maryland Route 51(MD) I-III 4.96 feet   low 5/16 22:15
MD Fifteen Mile Creek— US Route 40 to Potomac River I-II(III) 2.46 ft   low 5/16 20:45
MD Flintstone Creek— Flintstone Creek Road to Town Creek I-III 668 cfs   med 5/16 22:15
MD Georges Creek— Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 5.07 ft   med 5/16 16:00
MD Gunpowder Falls— 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ 20 cfs   low 5/16 20:30
MD Gunpowder Falls— 2 - Prettyboy Dam to Falls Road I-III 1.65 feet   low 5/16 22:15
MD Gunpowder Falls— 3 - Falls Road to Phoenix I-II 47 cfs   low 5/16 22:15
MD Gunpowder Falls— 4 - Lower Loch Raven Dam to Route 1 I
MD Gunpowder Falls— 5 - Route 1 to U.S.40 II-III
MD Gwynns Falls— Gwynn Oak Ave. to Wilkens Ave (US 1) II-III(IV) 57 cfs   low 5/16 22:30
MD Gwynns Falls— Villa Nova to Woodlawn II 57 cfs   low 5/16 22:30
MD Herring Run— Echodale Ave to US 40 II-III 2 cfs   low 5/16 20:28
MD Hunting Creek— Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 325 cfs   low 5/16 20:30
MD Jennings Run— Barrelville to Wills Creek III+ 884 cfs   med 5/16 21:30
MD Jones Falls— Lake Roland to Round Falls I-III
md Laurel Run— Laurel Run IV 5.76 feet   low 5/16 22:15
MD Little Falls— Parkton (Maryland Route 45) to Gunpowder Falls I-III 117 cfs   low 5/16 22:15
MD Little Gunpowder Falls— U.S. Route to U.S. Route 40 II-III 47 cfs   low 5/16 22:15  
MD Little Patuxent— US Route 29 (Columbia) to US Route 1 I-IV 324 cfs   med 5/16 20:00
MD Little Seneca Creek— Boyds to Darnestown II(III) 101 cfs   low 5/8 0:15
MD Long Green Creek— Glen Arm Rd. to Gunpowder Falls IV 13.00   low 5/16 22:15
MD Middle creek— Wolfsville to Myersville II-III(V) 2.79 ft   low 5/16 20:30
MD Middle Patuxent— Carroll Mill Road to Savage Mill I-II(IV) 5.06 ft   med 5/16 20:00
MD Mill Run— Pigs Ear Road to Yough River Lake III-IV+
MD Muddy Creek— Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghiogheny River I-III(V)
MD Northeast Creek— below covered bridge on Route 272 V
MD Octoraro Creek— New Bridge Road to Richardsmere II 3.55 ft   med 5/16 23:15
MD Olmstead Island Creek— Clarabarton Parkway to C&O Canal V
MD Owens Creek— 1) Lantz to Roddy Covered Bridge II-IV 325 cfs   low 5/16 20:30
MD Owens Creek— 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 325 cfs   med 5/16 20:30
MD Patapsco— Woodstock to Elkridge I-III 169 cfs   med 5/16 20:15
MD Patapsco, S. Branch— Woodbine to Woodstock I-III(IV) 169 cfs   med 5/16 20:15
MD Piney Run— Arrington Road to Marriottsville I-III(IV) 39 cfs   low 5/16 20:15
MD Potomac— 1. Sandy Hook to Point of Rocks I-II 9.22 ft   high 5/16 22:15
MD Potomac— 2. Violette's Lock/GW Canal Loop I-II 6.16 Ft   high 5/16 21:45
MD Potomac— 4. Mather Gorge to Lock 10 I-IV 6.16 ft   med 5/16 21:45
MD Potomac— 5. Lock 10 to Little Falls I 6.16 feet   med 5/16 21:45
MD Potomac— 6. Little Falls II-III(IV) 6.16 ft   high 5/16 21:45
MD Potomac River— Great Falls (Center Lines) V+ 6.16 ft   high 5/16 21:45
MD Potomac River— Great Falls (MD Lines) V+ 6.16 ft   high 5/16 21:45
MD Potomac River— Great Falls (VA Lines) V+ 6.16 ft   high 5/16 21:45
MD Potomac, N. Branch— 1. Henry to Gormania I-III 5.76 ft   med 5/16 22:15
MD Potomac, N. Branch— 2. Gormania, WV to Kitzmiller, MD III-IV 5.76 ft   med 5/16 22:15
MD Potomac, N. Branch— 3. Kitzmiller, MD to Jennings Randolph Lake I-III 5.76 ft   med 5/16 22:15
MD Potomac, N. Branch— 4. Barnum, WV to Bloomington, MD II-III 4,970 cfs   high 5/16 22:15
MD Rock Creek— 1. Rockville to Military Road I(II) 179 cfs   med 5/16 22:15
MD Rock Creek— 2. Military Road to Potomac River in D.C. I-III 179 cfs   med 5/16 22:15
MD Savage— Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 304 cfs   med 5/16 22:15
MD Savage— Dam to North Branch Potomac River III-IV 50 cfs   low 5/16 22:15
MD Sideling Hill Creek— Purcell Penn.(sr 2011)to the Potomac river I-II 2.46 ft   med 5/16 20:45
MD Town Creek— I-68 to Potomac River I 668 cfs   med 5/16 22:15
MD Wills Creek— Ellerslie to Eckhart Junction I-II 884 cfs   med 5/16 21:30
MD Winters Run— Pleasantville Road to Maryland Route 7 I-II 81 cfs   low 5/16 20:00
MD Youghiogheny— 0. US Route 50 to Millers Run I-II
MD Youghiogheny— 1. Tippy-Top IV 2,000 cfs   med 5/16 22:15
MD Youghiogheny— 2. Top IV-V 2,000 cfs   high 5/16 22:15  
MD Youghiogheny— 3. Upper IV-V 5.50 ft   high 5/16 19:30  
 MD State Rivers (RSS)  
 MD State Rivers (KML)help  
 MD State Rivers (mobile)