Old browser warning

Site look funky?  Your browser is either Internet Explorer (hit refresh (F5) several times due to a bug in Microsoft's code that we can't work around) or is 10 years old and standards-based layouts and styling confuse it.   Consider updating.  One excellent option is Mozilla Firefox, versions of which are available for Linux, Mac and Windows. Safari 1.0+ and IE 6.0+ are also supported.

River List help

State Partl. Name

Level Legend: - - - - - - - - - Below Recommended Low Runnable - - - - - - - - High Runnable Above Recommended - - - - - - - - - Unknown Unknown
Options Scheme: customize colors... Detailed Rivers Simple Rivers
Click a heading to sort. Hover over a heading for help.
River Name/Section Class Level running? Updated
Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road I-III(V+) 20 cfs
0 cfs/hr
L3-
Below Recom.
01h30m
Antietam Creek [MD] 1) Upper: Oak Bridge to Hwy.68 I-II 3.17 ft
0.00 ft/hr
R0-
Lower Runnable
01h45m
Antietam Creek [MD] 2) Hwy.68 to Potomac River I-II 3.17 ft
0.00 ft/hr
R2-
Lower Runnable
01h45m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville IV 43 cfs
0 cfs/hr
L1-
Below Recom.
02h44m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 3.17 ft
0.00 ft/hr
L7-
Below Recom.
01h45m
Bennett Creek [MD] MD Route 355 to Monocacy River I-II 97 cfs
0 cfs/hr
L9-
Below Recom.
01h30m
Big Elk Creek [MD] PA Route 341 to Elkton I-II 84 cfs
0 cfs/hr
L9-
Below Recom.
06h30m
Broad Creek [MD] MD Route 136 to MD Route 623 I-II 192 cfs
0 cfs/hr
L9-
Below Recom.
06h01m
Cabin John Creek [MD] River Road to Potomac II-III 55 cfs
0 cfs/hr
L7-
Below Recom.
01h59m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495 I-III+ 1.21 ft
0.00 ft/hr
L3-
Below Recom.
01h45m
Casselman [MD] MD Route 495 to Salisbury, Pennsylvania I-II 67 cfs
0 cfs/hr
L9-
Below Recom.
01h45m
Catoctin Creek [MD] US 40 to Potomac River I-II 2.12 ft
0.00 ft/hr
L9-
Below Recom.
01h30m
Conowingo Creek [MD] Oakwood to Susquehanna River IV-V 291 cfs
-5 cfs/hr
L7-
Below Recom.
00h30m
Crabtree Creek [MD] Swanton, MD to Savage Reservoir III-IV+ 33 cfs
0 cfs/hr
L2-
Below Recom.
06h01m
Deep Creek [MD] Dam to Youghiogheny River V n/a

Deer Creek [MD] Bond Road to Susquehanna River I-III 2.69 ft
0.00 ft/hr
L9-
Below Recom.
06h01m
Evitts Creek [MD] Lake Gordon Dam (PA) to Maryland Route 51(MD) I-III 2.68 ft
-0.01 ft/hr
L6-
Below Recom.
01h45m
Fifteen Mile Creek [MD] US Route 40 to Potomac River I-II(III) 1.39 ft
-0.01 ft/hr
L7-
Below Recom.
02h14m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek I-III 102 cfs
-1 cfs/hr
L8-
Below Recom.
01h45m
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 3.52 ft
0.00 ft/hr
L6-
Below Recom.
06h30m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ 20 cfs
0 cfs/hr
L9-
Below Recom.
01h45m
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road I-III 2.20 ft
-0.00 ft/hr
R0-
Lower Runnable
02h14m
Gunpowder Falls [MD] 3 - Falls Road to Phoenix I-II 160 cfs
-1 cfs/hr
R0-
Lower Runnable
02h14m
Gunpowder Falls [MD] 4 - Lower Loch Raven Dam to Route 1 I n/a

Gunpowder Falls [MD] 5 - Route 1 to U.S.40 II-III n/a

Gwynns Falls [MD] Gwynn Oak Ave. to Wilkens Ave (US 1) II-III(IV) 46 cfs
0 cfs/hr
L6-
Below Recom.
01h45m
Gwynns Falls [MD] Villa Nova to Woodlawn II 46 cfs
0 cfs/hr
L9-
Below Recom.
01h45m
Herring Run [MD] Echodale Ave to US 40 II-III 1 cfs
0 cfs/hr
L9-
Below Recom.
02h12m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 87 cfs
0 cfs/hr
L7-
Below Recom.
01h30m
Jennings Run [MD] Barrelville to Wills Creek III+ 122 cfs
-3 cfs/hr
L6-
Below Recom.
01h00m
Jones Falls [MD] Lake Roland to Round Falls I-III n/a

Laurel Run [MD] Laurel Run IV 2.65 ft
0.00 ft/hr
L0-
Below Recom.
06h01m
Little Falls [MD] Parkton (Maryland Route 45) to Gunpowder Falls I-III 104 cfs
0 cfs/hr
L9-
Below Recom.
01h59m
Little Gunpowder Falls [MD] U.S. Route to U.S. Route 40 II-III 54 cfs
0 cfs/hr
L6-
Below Recom.
01h59m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1 I-IV 139 cfs
0 cfs/hr
L5-
Below Recom.
01h59m
Little Seneca Creek [MD] Boyds to Darnestown II(III) 156 cfs
0 cfs/hr
L8-
Below Recom.
01h30m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls IV 13 cfs
0 cfs/hr
L7-
Below Recom.
06h01m
Middle Creek (Toms Creek trib.) [MD] T318 to Harney Road II+ 109 cfs
-1 cfs/hr
L8-
Below Recom.
02h44m
Middle Patuxent [MD] Carroll Mill Road to Savage Mill I-II(IV) 3.93 ft
0.00 ft/hr
L5-
Below Recom.
01h59m
Middle creek [MD] Wolfsville to Myersville II-III(V) 2.12 ft
0.00 ft/hr
L7-
Below Recom.
01h30m
Mill Run [MD] Pigs Ear Road to Yough River Lake III-IV+ n/a

Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi... I-III(V) n/a

Northeast Creek [MD] below covered bridge on Route 272 V 84 cfs
0 cfs/hr
L8-
Below Recom.
06h30m
Octoraro Creek [MD] New Bridge Road to Richardsmere II 2.79 ft
0.00 ft/hr
R0-
Lower Runnable
01h45m
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 87 cfs
0 cfs/hr
L7-
Below Recom.
01h30m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 87 cfs
0 cfs/hr
L9-
Below Recom.
01h30m
Patapsco, S. Branch [MD] Woodbine to Woodstock I-III(IV) 2.22 ft
0.00 ft/hr
L9-
Below Recom.
06h01m
Patapsco [MD] Woodstock to Elkridge I-III 316 cfs
0 cfs/hr
R0-
Lower Runnable
06h01m
Piney Run [MD] Arrington Road to Marriottsville I-III(IV) 24 cfs
0 cfs/hr
L3-
Below Recom.
01h59m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV I-III 2.65 ft
0.00 ft/hr
L0-
Below Recom.
06h01m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD III-IV 2.65 ft
0.00 ft/hr
L4-
Below Recom.
06h01m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake II-III 2.65 ft
0.00 ft/hr
L6-
Below Recom.
06h01m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD II(III) 254 cfs
0 cfs/hr
L5-
Below Recom.
06h01m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV I-II 349 cfs
0 cfs/hr
L7-
Below Recom.
02h14m
Potomac [MD] 1. Sandy Hook to Point of Rocks I-II 4.77 ft
0.00 ft/hr
R4-
Runnable
06h01m
Potomac [MD] 2. Violette's Lock/GW Canal Loop I-II 4.13 ft
-0.02 ft/hr
R4-
Runnable
01h30m
Potomac [MD] 3. Great Falls (Center Lines) V+ 4.13 ft
-0.02 ft/hr
H2-
Above Recom.
01h30m
Potomac [MD] 3. Great Falls (MD Lines) V+ 4.13 ft
-0.02 ft/hr
H7-
Above Recom.
01h30m
Potomac [MD] 3. Great Falls (VA Lines) V 4.13 ft
-0.02 ft/hr
H9-
Above Recom.
01h30m
Potomac [MD] 4. Mather Gorge to Lock 10 I-IV 4.13 ft
-0.02 ft/hr
R3-
Runnable
01h30m
Potomac [MD] 5. Lock 10 to Little Falls I 4.13 ft
-0.02 ft/hr
R2-
Lower Runnable
01h30m
Potomac [MD] 6. Little Falls II-III(IV) 4.13 ft
-0.02 ft/hr
R1-
Lower Runnable
01h30m
Potomac [MD] Great Falls (Fish Ladder) V 4.13 ft
-0.02 ft/hr
R6-
Runnable
01h30m
Rock Creek [MD] 1. Rockville to Military Road I(II) 55 cfs
0 cfs/hr
L8-
Below Recom.
01h59m
Rock Creek [MD] 2. Military Road to Potomac River in D.C. I-III 55 cfs
0 cfs/hr
L8-
Below Recom.
01h59m
Savage [MD] Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 33 cfs
0 cfs/hr
L7-
Below Recom.
06h01m
Savage [MD] Dam to North Branch Potomac River III-IV 53 cfs
0 cfs/hr
L8-
Below Recom.
06h01m
Seneca Creek [MD] Black Rock Mill to Riley's Lock Boat Ramp I-II 156 cfs
0 cfs/hr
R1-
Lower Runnable
01h30m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river I-II 1.39 ft
-0.01 ft/hr
L7-
Below Recom.
02h14m
Town Creek [MD] I-68 to Potomac River I 102 cfs
-1 cfs/hr
L9-
Below Recom.
01h45m
Wills Creek [MD] Ellerslie to Eckhart Junction I-II 122 cfs
-3 cfs/hr
L9-
Below Recom.
01h00m
Winters Run [MD] Pleasantville Road to Maryland Route 7 I-II 54 cfs
0 cfs/hr
L9-
Below Recom.
01h59m
Youghiogheny [MD] 0. US Route 50 to Millers Run I-II n/a

Youghiogheny [MD] 1. Tippy-Top IV 106 cfs
0 cfs/hr
L8-
Below Recom.
07h00m
Youghiogheny [MD] 2. Top IV-V 106 cfs
0 cfs/hr
L8-
Below Recom.
07h00m
Youghiogheny [MD] 3. Upper IV-V 2.66 ft
0.00 ft/hr
L3-
Below Recom.
01h30m