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State Partl. Name

Level Legend: - - - - - - - - - Below Recommended Low Runnable - - - - - - - - High Runnable Above Recommended - - - - - - - - - Unknown Unknown
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River Name/Section Class Level running? Updated
Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road I-III(V+) 30 cfs
-2 cfs/hr
L4-
Below Recom.

02h48m
Antietam Creek [MD] 1) Upper: Oak Bridge to Hwy.68 I-II 3.37 ft
-0.00 ft/hr
R0-
Lower Runnable

02h48m
Antietam Creek [MD] 2) Hwy.68 to Potomac River I-II 3.37 ft
-0.00 ft/hr
R2-
Lower Runnable

02h48m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville IV 56 cfs
-1 cfs/hr
L8-
Below Recom.

01h04m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 3.37 ft
-0.00 ft/hr
L8-
Below Recom.

02h48m
Bennett Creek [MD] MD Route 355 to Monocacy River I-II 128 cfs
-2 cfs/hr
R0-
Lower Runnable

02h04m
Big Elk Creek [MD] PA Route 341 to Elkton I-II 111 cfs
-2 cfs/hr
L9-
Below Recom.

00h49m
Broad Creek [MD] MD Route 136 to MD Route 623 I-II 264 cfs
-3 cfs/hr
L9-
Below Recom.

03h33m
Cabin John Creek [MD] River Road to Potomac II-III 117 cfs
-1 cfs/hr
L8-
Below Recom.

01h19m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495 I-III+ 1.46 ft
-0.00 ft/hr
L4-
Below Recom.

01h04m
Casselman [MD] MD Route 495 to Salisbury, Pennsylvania I-II 109 cfs
-1 cfs/hr
R0-
Lower Runnable

01h04m
Catoctin Creek [MD] US 40 to Potomac River I-II 2.35 ft
-0.00 ft/hr
R0-
Lower Runnable

03h03m
Conowingo Creek [MD] Oakwood to Susquehanna River IV-V 467 cfs
+ 5 cfs/hr
L8-
Below Recom.

00h49m
Crabtree Creek [MD] Swanton, MD to Savage Reservoir III-IV+ 105 cfs
0 cfs/hr
L3-
Below Recom.

01h19m
Deep Creek [MD] Dam to Youghiogheny River V n/a

Deer Creek [MD] Bond Road to Susquehanna River I-III 2.90 ft
-0.01 ft/hr
L9-
Below Recom.

03h33m
Evitts Creek [MD] Lake Gordon Dam (PA) to Maryland Route 51(MD) I-III 3.08 ft
0.00 ft/hr
L6-
Below Recom.

01h04m
Fifteen Mile Creek [MD] US Route 40 to Potomac River I-II(III) 1.61 ft
0.00 ft/hr
L7-
Below Recom.

00h34m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek I-III 161 cfs
0 cfs/hr
L8-
Below Recom.

01h04m
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 3.75 ft
-0.01 ft/hr
L6-
Below Recom.

00h49m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ 22 cfs
-0 cfs/hr
L9-
Below Recom.

03h18m
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road I-III 2.38 ft
0.00 ft/hr
R0-
Lower Runnable

02h19m
Gunpowder Falls [MD] 3 - Falls Road to Phoenix I-II 211 cfs
0 cfs/hr
R0-
Lower Runnable

02h19m
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) 50 cfs
-1 cfs/hr
L6-
Below Recom.

01h04m
Gwynns Falls [MD] Villa Nova to Woodlawn II 50 cfs
-1 cfs/hr
L9-
Below Recom.

01h04m
Herring Run [MD] Echodale Ave to US 40 II-III 3 cfs
-0 cfs/hr
L9-
Below Recom.

02h40m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 147 cfs
-2 cfs/hr
L7-
Below Recom.

03h03m
Jennings Run [MD] Barrelville to Wills Creek III+ 251 cfs
-2 cfs/hr
L7-
Below Recom.

01h34m
Jones Falls [MD] Lake Roland to Round Falls I-III n/a

Laurel Run [MD] Laurel Run IV 3.04 ft
-0.01 ft/hr
L0-
Below Recom.

01h19m
Little Falls [MD] Parkton (Maryland Route 45) to Gunpowder Falls I-III 124 cfs
-2 cfs/hr
L9-
Below Recom.

01h19m
Little Gunpowder Falls [MD] U.S. Route to U.S. Route 40 II-III 100 cfs
-1 cfs/hr
L8-
Below Recom.

03h33m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1 I-IV 181 cfs
-2 cfs/hr
L6-
Below Recom.

03h33m
Little Seneca Creek [MD] Boyds to Darnestown II(III) 236 cfs
-4 cfs/hr
L9-
Below Recom.

02h48m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls IV 20 cfs
0 cfs/hr
L7-
Below Recom.

01h19m
Middle Patuxent [MD] Carroll Mill Road to Savage Mill I-II(IV) 4.42 ft
-0.01 ft/hr
L8-
Below Recom.

03h33m
Middle creek [MD] Wolfsville to Myersville II-III(V) 2.35 ft
-0.00 ft/hr
L7-
Below Recom.

03h03m
Mill Run [MD] Pigs Ear Road to Yough River Lake III-IV+ 22 cfs
0 cfs/hr
L7-
Below Recom.

01h19m
Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi... I-III(V) 22 cfs
0 cfs/hr
L8-
Below Recom.

01h19m
Northeast Creek [MD] below covered bridge on Route 272 V 111 cfs
-2 cfs/hr
L8-
Below Recom.

00h49m
Octoraro Creek [MD] New Bridge Road to Richardsmere II 3.15 ft
-0.04 ft/hr
R0-
Lower Runnable

00h34m
Olmstead Island Creek [MD] Clarabarton Parkway to C&O Canal V n/a

Owens Creek [MD] 1) Lantz to Roddy Covered Bridge II-IV 147 cfs
-2 cfs/hr
L8-
Below Recom.

03h03m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 147 cfs
-2 cfs/hr
L9-
Below Recom.

03h03m
Patapsco, S. Branch [MD] Woodbine to Woodstock I-III(IV) 113 cfs
-1 cfs/hr
L9-
Below Recom.

03h18m
Patapsco [MD] Woodstock to Elkridge I-III 113 cfs
-1 cfs/hr
L9-
Below Recom.

03h18m
Piney Run [MD] Arrington Road to Marriottsville I-III(IV) 35 cfs
-0 cfs/hr
L4-
Below Recom.

03h18m
Potomac River [MD] Great Falls (Center Lines) V+ 4.83 ft
0.00 ft/hr
H9-
Above Recom.

00h49m
Potomac River [MD] Great Falls (MD Lines) V+ 4.83 ft
0.00 ft/hr
H9-
Above Recom.

00h49m
Potomac River [MD] Great Falls (VA Lines) V+ 4.83 ft
0.00 ft/hr
H9-
Above Recom.

00h49m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV I-III 3.04 ft
-0.01 ft/hr
L0-
Below Recom.

01h19m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD III-IV 3.04 ft
-0.01 ft/hr
L6-
Below Recom.

01h19m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake II-III 3.04 ft
-0.01 ft/hr
L7-
Below Recom.

01h19m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD II-III 350 cfs
0 cfs/hr
L9-
Below Recom.

01h19m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV I-II 571 cfs
0 cfs/hr
R0-
Lower Runnable

00h34m
Potomac [MD] 1. Sandy Hook to Point of Rocks I-II 5.94 ft
-0.01 ft/hr
R7-
Upper Runnable

01h19m
Potomac [MD] 2. Violette's Lock/GW Canal Loop I-II 4.83 ft
0.00 ft/hr
R6-
Runnable

00h49m
Potomac [MD] 4. Mather Gorge to Lock 10 I-IV 4.83 ft
0.00 ft/hr
R4-
Runnable

00h49m
Potomac [MD] 5. Lock 10 to Little Falls I 4.83 ft
0.00 ft/hr
R3-
Runnable

00h49m
Potomac [MD] 6. Little Falls II-III(IV) 4.83 ft
0.00 ft/hr
H4-
Above Recom.

00h49m
Rock Creek [MD] 1. Rockville to Military Road I(II) 117 cfs
-1 cfs/hr
L9-
Below Recom.

01h19m
Rock Creek [MD] 2. Military Road to Potomac River in D.C. I-III 117 cfs
-1 cfs/hr
L9-
Below Recom.

01h19m
Savage [MD] Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 105 cfs
0 cfs/hr
L8-
Below Recom.

01h19m
Savage [MD] Dam to North Branch Potomac River III-IV 130 cfs
0 cfs/hr
L8-
Below Recom.

01h19m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river I-II 1.61 ft
0.00 ft/hr
L8-
Below Recom.

00h34m
Town Creek [MD] I-68 to Potomac River I 161 cfs
0 cfs/hr
R0-
Lower Runnable

01h04m
Wills Creek [MD] Ellerslie to Eckhart Junction I-II 251 cfs
-2 cfs/hr
R0-
Lower Runnable

01h34m
Winters Run [MD] Pleasantville Road to Maryland Route 7 I-II 100 cfs
-1 cfs/hr
L9-
Below Recom.

03h33m
Youghiogheny [MD] 0. US Route 50 to Millers Run I-II 22 cfs
0 cfs/hr
L9-
Below Recom.

01h19m
Youghiogheny [MD] 1. Tippy-Top IV 148 cfs
-8 cfs/hr
L9-
Below Recom.

01h19m
Youghiogheny [MD] 2. Top IV-V 148 cfs
-8 cfs/hr
L9-
Below Recom.

01h19m
Youghiogheny [MD] 3. Upper IV-V 2.92 ft
0.00 ft/hr
L0-
Below Recom.

00h49m