Maryland, US River List

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Color Mode
Level Legend Low Running High Unknown
River Name/Section Class Level   Updated
Anacostia, Northwest Branch [MD] US Rte 29 (Burnt Mills) to Riggs Road (Adelphi Mill) I-IV(V+) 12 cfs
0 cfs/hr 		L1-
Below Recom.
01h10m
Antietam Creek [MD] 1) Upper: Oak Ridge Dr. to Hwy.68 (Devils Backbone Park) I-II 2.87 ft
0.00 ft/hr 		L0-
Below Recom.
00h38m
Antietam Creek [MD] 2) Hwy 68 to Hwy 34 I-II 2.87 ft
0.00 ft/hr 		R3-
Runnable
00h38m
Antietam Creek [MD] 3) Hwy.34 to Potomac River I-II 2.87 ft
0.00 ft/hr 		R3-
Runnable
00h38m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville IV 131 cfs
0 cfs/hr 		L4-
Below Recom.
00h23m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 2.87 ft
0.00 ft/hr 		L0-
Below Recom.
00h38m
Bennett Creek [MD] MD Route 355 to Monocacy River I-II 51 cfs
+ 4 cfs/hr 		L0-
Below Recom.
45h09m
Big Elk Creek [MD] PA Route 341 to Elkton I-II 43 cfs
+ 2 cfs/hr 		L9-
Below Recom.
06h09m
Broad Creek [MD] MD Route 136 to MD Route 623 I-II n/a
Cabin John Creek [MD] River Road to Potomac II-III 30 cfs
+ 1 cfs/hr 		L7-
Below Recom.
00h38m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495 I-III 175 cfs
0 cfs/hr 		L0-
Below Recom.
06h24m
Casselman [MD] 1) MD Route 495 to Salisbury, Pennsylvania I-II 175 cfs
0 cfs/hr 		R1-
Lower Runnable
06h24m
Catoctin Creek [MD] US 40 to Potomac River I-II 2.01 ft
+0.06 ft/hr 		L3-
Below Recom.
01h10m
Conococheague Creek [MD] Wilson Bridge (US 40) to Williamsport, MD Boat Ramp I 2.35 ft
-0.03 ft/hr 		R3-
Runnable
01h10m
Conowingo Creek [MD] Oakwood to Susquehanna River IV-V n/a
Crabtree Creek [MD] Swanton, MD to Savage Reservoir III-IV+ 89 cfs
+ 2 cfs/hr 		L3-
Below Recom.
06h39m
Deep Creek [MD] Dam to Youghiogheny River V n/a
Deer Creek [MD] 1. Bond Road to MD 23 I 2.36 ft
0.00 ft/hr 		L3-
Below Recom.
00h38m
Deer Creek [MD] 2. Harford Creamery Rd. to Eden Mill Park boat ramp I 2.36 ft
0.00 ft/hr 		L0-
Below Recom.
00h38m
Deer Creek [MD] 3. Eden Mill Dam to Rocks State Park I-II(III) 2.36 ft
0.00 ft/hr 		R0-
Lower Runnable
00h38m
Deer Creek [MD] 4. Rocks State Park to US 1, Benjamin Bridge Access I-II(III) 2.36 ft
0.00 ft/hr 		L0-
Below Recom.
00h38m
Deer Creek [MD] 5. US Rt 1, Benjamin Bridge Access to MD 136 I-II 2.36 ft
0.00 ft/hr 		L5-
Below Recom.
00h38m
Deer Creek [MD] 6. MD 136 to Susquehanna River I-II 2.36 ft
0.00 ft/hr 		L4-
Below Recom.
00h38m
Evitts Creek [MD] 1. Lake Gordon Dam (PA) to Maryland Route 144 (MD) I-III 2.73 ft
-0.03 ft/hr 		L0-
Below Recom.
00h23m
Evitts Creek [MD] 2. MD 144 to MD 51 I-II 2.73 ft
-0.03 ft/hr 		L0-
Below Recom.
00h23m
Fifteen Mile Creek [MD] US Route 40 to Potomac River I-II(III) 1.21 ft
0.00 ft/hr 		L0-
Below Recom.
00h53m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek I-III n/a
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 3.65 ft
0.00 ft/hr 		L0-
Below Recom.
01h10m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ n/a
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road I-III 58 cfs
0 cfs/hr 		L0-
Below Recom.
00h53m
Gunpowder Falls [MD] 3 - Masemore Road to Monkton Road I-II 126 cfs
0 cfs/hr 		R3-
Runnable
00h38m
Gunpowder Falls [MD] 4. Monkton Road to Phoenix I 126 cfs
0 cfs/hr 		R3-
Runnable
00h38m
Gunpowder Falls [MD] 5 - Lower Loch Raven Dam to Route 1 I-II ~ 194 cfs
+ 3 cfs/hr 		L0-
Below Recom.
00h26m
Gunpowder Falls [MD] 6 - Route 1 to U.S.40 II-III ~ 199 cfs
+ 3 cfs/hr 		L0-
Below Recom.
00h26m
Gwynns Falls [MD] 1) Villa Nova to Woodlawn II 21 cfs
0 cfs/hr 		L5-
Below Recom.
00h23m
Gwynns Falls [MD] 2) Gwynn Oak Ave. to Wilkens Ave (US 1) II-III(IV) 21 cfs
0 cfs/hr 		L5-
Below Recom.
00h23m
Herring Run [MD] Echodale Ave to US 40 II-III 1 cfs
0 cfs/hr 		L9-
Below Recom.
00h21m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 72 cfs
+ 5 cfs/hr 		L7-
Below Recom.
45h09m
Jennings Run [MD] Barrelville to Wills Creek III+ 153 cfs
0 cfs/hr 		L7-
Below Recom.
05h39m
Jones Falls [MD] Lake Roland to Round Falls I-III n/a
Laurel Run [MD] Laurel Run IV 3.68 ft
-0.01 ft/hr 		L1-
Below Recom.
00h38m
Little Falls of the Gunpowder [MD] Parkton (Maryland Route 45) to Gunpowder Falls I-III 49 cfs
+ 2 cfs/hr 		L3-
Below Recom.
06h39m
Little Gunpowder Falls [MD] 1) Bottom Rd @ Laurel Brook to Jerusalem Mill (Jerusalem Rd.... I-II 42 cfs
+ 7 cfs/hr 		L8-
Below Recom.
00h38m
Little Gunpowder Falls [MD] 2) Jerusalem Mill (Jerusalem Rd.) to U.S. Route 40 II-III 42 cfs
+ 7 cfs/hr 		L0-
Below Recom.
00h38m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1 I-IV 73 cfs
+ 11 cfs/hr 		L0-
Below Recom.
00h38m
Little Seneca Creek [MD] Boyds to Darnestown II(III) 85 cfs
+ 2 cfs/hr 		L0-
Below Recom.
01h04m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls IV 8 cfs
0 cfs/hr 		L0-
Below Recom.
00h38m
Middle Creek (Catoctin Creek trib.) [MD] Wolfsville to Myersville II-III(V) 2.01 ft
+0.06 ft/hr 		L0-
Below Recom.
01h10m
Middle Creek (Toms Creek trib.) [MD] T318 to Harney Road II+ n/a
Middle Patuxent [MD] Carroll Mill Road to Savage Mill I-II(IV) 3.44 ft
+0.09 ft/hr 		L0-
Below Recom.
00h38m
Mill Run [MD] Pigs Ear Road to Yough River Lake III-IV+ 27 cfs
-1 cfs/hr 		L0-
Below Recom.
02h55m
Monocacy River [MD] 1. Creagerstown Park to Devilbiss Bridge Park I 2.80 ft
-0.03 ft/hr 		R4-
Runnable
03h25m
Monocacy River [MD] 2. Devilbiss Bridge Park to Riverbend Park I 2.80 ft
-0.03 ft/hr 		R4-
Runnable
03h25m
Monocacy River [MD] 3. Pinecliff Park to Buckeystown Park I(II) 2.80 ft
-0.03 ft/hr 		R4-
Runnable
03h25m
Monocacy River [MD] 4. Buckeystown Park to Park Mills Road I(II) 2.80 ft
-0.03 ft/hr 		R4-
Runnable
03h25m
Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi... I-III(V) 27 cfs
-1 cfs/hr 		L1-
Below Recom.
02h55m
Northeast Creek [MD] below covered bridge on Route 272 V 43 cfs
+ 2 cfs/hr 		L8-
Below Recom.
06h09m
Octoraro Creek [MD] 3. New Bridge Road to Richardsmere II 118 cfs
0 cfs/hr 		L0-
Below Recom.
01h10m
Olmsted Island Creek [MD] Clara Barton Parkway to C&O Canal V n/a
Owens Creek [MD] 1) Lantz to Roddy Covered Bridge II-IV 72 cfs
+ 5 cfs/hr 		L7-
Below Recom.
45h09m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 72 cfs
+ 5 cfs/hr 		L0-
Below Recom.
45h09m
Patapsco, S. Branch [MD] 1. Woodbine to Henryton Rd. II+(III) ~ 70 cfs
+ 77 cfs/hr 		L0-
Below Recom.
00h55m
Patapsco, S. Branch [MD] 2. Marriottsville Rd to Patapsco, N. Branch confluence I-III(IV) ~ 110 cfs
-3 cfs/hr 		L0-
Below Recom.
00h40m
Patapsco [MD] 1. N. Br./S. Br. confluence to Daniels river access I 159 cfs
0 cfs/hr 		L5-
Below Recom.
00h38m
Patapsco [MD] 2. Daniels river access (below Dam) to Elkridge I-III ~ 159 cfs
0 cfs/hr 		L2-
Below Recom.
00h38m
Piney Run [MD] Arrington Road to Marriottsville I-III(IV) 16 cfs
+ 3 cfs/hr 		L1-
Below Recom.
00h53m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV I-III 3.68 ft
-0.01 ft/hr 		L2-
Below Recom.
00h38m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD III-IV 3.68 ft
-0.01 ft/hr 		L8-
Below Recom.
00h38m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake II-III 3.68 ft
-0.01 ft/hr 		R1-
Lower Runnable
00h38m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD II(III) 825 cfs
+ 7 cfs/hr 		R4-
Runnable
00h38m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV I-II 1230 cfs
0 cfs/hr 		R4-
Runnable
00h53m
Potomac, North Branch [MD] 6. Black Oak River Access Nr. McCoole, MD to Pinto, MD I 1230 cfs
0 cfs/hr 		R4-
Runnable
00h53m
Potomac, North Branch [MD] 7. Pinto, MD to Upper Potomac Industrial Park (upstream of C... I 1230 cfs
0 cfs/hr 		R4-
Runnable
00h53m
Potomac, North Branch [MD] 8. Wiley's Ford, WV to Oldtown Toll Bridge I 1230 cfs
0 cfs/hr 		R4-
Runnable
00h53m
Potomac [MD] 0.1 Oldtown Toll Bridge to Paw Paw Tunnel Campground I 6.51 ft
+0.01 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.2 Paw Paw Tunnel Campground to Fifteen Mile Creek Boat Lan... I 6.51 ft
+0.01 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.3 Fifteen Mile Creek Boat Ramp to Hancock, MD I 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.4 Big Pool Campground to Williamsport MD I 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.5 Dam # 4 to Shepherdstown WV I 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.6 Shepherdstown, WV to Dargans Bend Boat Ramp I 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.7 - Potomac - Dargans Bend Boat Ramp to Potoma Wayside II+ 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.8 Sandy Hook/Potoma Wayside to Point of Rocks MD I-II 5.07 ft
-0.02 ft/hr 		R5-
Runnable
00h38m
Potomac [MD] 0.9 Point of Rocks to Mouth of Monocacy I 3.75 ft
0.00 ft/hr 		R4-
Runnable
01h10m
Potomac [MD] 1. Mouth of Monocacy to Riley's Lock Boat Ramp I 3.75 ft
0.00 ft/hr 		R4-
Runnable
01h10m
Potomac [MD] 2. GW Canal Loop or Violette's Lock to Pennyfield Lock I-II 3.75 ft
0.00 ft/hr 		R4-
Runnable
01h10m
Potomac [MD] 3. Great Falls (Center Lines) V+ 3.75 ft
0.00 ft/hr 		R6-
Runnable
01h10m
Potomac [MD] 3. Great Falls (Fish Ladder) V 3.75 ft
0.00 ft/hr 		R4-
Runnable
01h10m
Potomac [MD] 3. Great Falls (MD Lines) V+ 3.75 ft
0.00 ft/hr 		H3-
Above Recom.
01h10m
Potomac [MD] 3. Great Falls (VA Lines) V+ 3.75 ft
0.00 ft/hr 		R7-
Upper Runnable
01h10m
Potomac [MD] 3. Through Great Falls (several runs) V+ 3.75 ft
0.00 ft/hr 		R8-
Upper Runnable
01h10m
Potomac [MD] 4. Sandy Beach/O-Deck to Anglers Inn II-III(IV) 3.75 ft
0.00 ft/hr 		R5-
Runnable
01h10m
Potomac [MD] 5. Anglers Inn to Lock 10 II 3.75 ft
0.00 ft/hr 		R5-
Runnable
01h10m
Potomac [MD] 6. Lock 10 to Sycamore Island I 3.75 ft
0.00 ft/hr 		R5-
Runnable
01h10m
Potomac [MD] 7. Little Falls II-III(IV) 3.75 ft
0.00 ft/hr 		R5-
Runnable
01h10m
Rock Creek [MD] 1. Rockville to Beach Dr. Near DC/MD line. I(II) 30 cfs
+ 1 cfs/hr 		L0-
Below Recom.
00h38m
Rock Creek [MD] 2. Beach Dr. below East-West Hwy to Potomac River in D.C. I-III 30 cfs
+ 1 cfs/hr 		L0-
Below Recom.
00h38m
Savage [MD] 1. Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 89 cfs
+ 2 cfs/hr 		L0-
Below Recom.
06h39m
Savage [MD] 2. Savage Dam to North Branch Potomac River III-IV 323 cfs
0 cfs/hr 		L0-
Below Recom.
00h38m
Seneca Creek [MD] Black Rock Mill to Riley's Lock Boat Ramp I-II 85 cfs
+ 2 cfs/hr 		L9-
Below Recom.
01h04m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river I-II 1.21 ft
0.00 ft/hr 		L0-
Below Recom.
00h53m
Town Creek [MD] 1. Chaneysville to I-68 (Maryland) I-II 2.73 ft
-0.03 ft/hr 		L9-
Below Recom.
00h23m
Town Creek [MD] 2. I-68 to Potomac River I n/a
Wills Creek [MD] Ellerslie to Eckhart Junction I-II 153 cfs
0 cfs/hr 		L0-
Below Recom.
05h39m
Winters Run [MD] Pleasantville Road to Maryland Route 7 I-II 33 cfs
+ 7 cfs/hr 		L0-
Below Recom.
00h38m
Youghiogheny [MD] 0. US Route 50 to Millers Run I-II 27 cfs
-1 cfs/hr 		L3-
Below Recom.
02h55m
Youghiogheny [MD] 1. Tippy-Top IV 396 cfs
-5 cfs/hr 		R2-
Lower Runnable
00h38m
Youghiogheny [MD] 2. Top IV-V 396 cfs
-5 cfs/hr 		R2-
Lower Runnable
00h38m
Youghiogheny [MD] 3. Upper IV-V 3.60 ft
+0.16 ft/hr 		R6-
Runnable
01h10m
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