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River Name/Section	Class	Level	running?	Updated
Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road	I-III(V+)	12 cfs 0 cfs/hr	L1- Below Recom.	00h34m
Antietam Creek [MD] 1) Upper: Oak Bridge to Hwy.68	I-II	3.13 ft -0.01 ft/hr	R0- Lower Runnable	00h49m
Antietam Creek [MD] 2) Hwy.68 to Potomac River	I-II	3.13 ft -0.01 ft/hr	R2- Lower Runnable	00h49m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville	IV	59 cfs + 1 cfs/hr	L1- Below Recom.	00h49m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40	I(II)	3.13 ft -0.01 ft/hr	L7- Below Recom.	00h49m
Bennett Creek [MD] MD Route 355 to Monocacy River	I-II	65 cfs 0 cfs/hr	L9- Below Recom.	00h34m
Big Elk Creek [MD] PA Route 341 to Elkton	I-II	78 cfs 0 cfs/hr	L9- Below Recom.	00h34m
Broad Creek [MD] MD Route 136 to MD Route 623	I-II	135 cfs + 2 cfs/hr	L9- Below Recom.	01h03m
Cabin John Creek [MD] River Road to Potomac	II-III	36 cfs 0 cfs/hr	L7- Below Recom.	01h03m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495	I-III+	n/a
Casselman [MD] MD Route 495 to Salisbury, Pennsylvania	I-II	n/a
Catoctin Creek [MD] US 40 to Potomac River	I-II	2.03 ft 0.00 ft/hr	L9- Below Recom.	00h34m
Conowingo Creek [MD] Oakwood to Susquehanna River	IV-V	251 cfs -4 cfs/hr	L7- Below Recom.	00h34m
Crabtree Creek [MD] Swanton, MD to Savage Reservoir	III-IV+	58 cfs -1 cfs/hr	L3- Below Recom.	01h03m
Deep Creek [MD] Dam to Youghiogheny River	V	n/a
Deer Creek [MD] Bond Road to Susquehanna River	I-III	2.50 ft +0.01 ft/hr	L8- Below Recom.	01h03m
Evitts Creek [MD] Lake Gordon Dam (PA) to Maryland Route 51(MD)	I-III	2.84 ft +0.02 ft/hr	L6- Below Recom.	00h49m
Fifteen Mile Creek [MD] US Route 40 to Potomac River	I-II(III)	1.39 ft 0.00 ft/hr	L7- Below Recom.	00h19m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek	I-III	118 cfs + 3 cfs/hr	L8- Below Recom.	00h49m
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River	III-IV	3.66 ft -0.01 ft/hr	L6- Below Recom.	00h34m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road)	II+	14 cfs 0 cfs/hr	L9- Below Recom.	00h49m
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road	I-III	2.10 ft -0.01 ft/hr	R0- Lower Runnable	00h19m
Gunpowder Falls [MD] 3 - Falls Road to Phoenix	I-II	143 cfs -2 cfs/hr	R0- Lower Runnable	00h19m
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)	25 cfs 0 cfs/hr	L5- Below Recom.	00h49m
Gwynns Falls [MD] Villa Nova to Woodlawn	II	25 cfs 0 cfs/hr	L9- Below Recom.	00h49m
Herring Run [MD] Echodale Ave to US 40	II-III	1 cfs 0 cfs/hr	L9- Below Recom.	00h17m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake	III-IV+(V)	72 cfs 0 cfs/hr	L7- Below Recom.	00h34m
Jennings Run [MD] Barrelville to Wills Creek	III+	127 cfs -6 cfs/hr	L7- Below Recom.	01h03m
Jones Falls [MD] Lake Roland to Round Falls	I-III	n/a
Laurel Run [MD] Laurel Run	IV	3.06 ft -0.02 ft/hr	L0- Below Recom.	01h03m
Little Falls [MD] Parkton (Maryland Route 45) to Gunpowder Falls	I-III	83 cfs -1 cfs/hr	L9- Below Recom.	01h03m
Little Gunpowder Falls [MD] U.S. Route to U.S. Route 40	II-III	50 cfs 0 cfs/hr	L6- Below Recom.	01h03m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1	I-IV	88 cfs 0 cfs/hr	L3- Below Recom.	01h03m
Little Seneca Creek [MD] Boyds to Darnestown	II(III)	124 cfs 0 cfs/hr	L8- Below Recom.	00h34m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls	IV	10 cfs -1 cfs/hr	L7- Below Recom.	01h03m
Middle Creek (Toms Creek trib.) [MD] T318 to Harney Road	II+	134 cfs + 4 cfs/hr	L8- Below Recom.	00h49m
Middle Patuxent [MD] Carroll Mill Road to Savage Mill	I-II(IV)	3.69 ft 0.00 ft/hr	L4- Below Recom.	01h03m
Middle creek [MD] Wolfsville to Myersville	II-III(V)	2.03 ft 0.00 ft/hr	L7- Below Recom.	00h34m
Mill Run [MD] Pigs Ear Road to Yough River Lake	III-IV+	15 cfs + 1 cfs/hr	L0- Below Recom.	01h03m
Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi...	I-III(V)	15 cfs + 1 cfs/hr	L0- Below Recom.	01h03m
Northeast Creek [MD] below covered bridge on Route 272	V	78 cfs 0 cfs/hr	L8- Below Recom.	00h34m
Octoraro Creek [MD] New Bridge Road to Richardsmere	II	2.76 ft 0.00 ft/hr	R0- Lower Runnable	03h48m
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 0 cfs/hr	L7- Below Recom.	00h34m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River	I-II	72 cfs 0 cfs/hr	L9- Below Recom.	00h34m
Patapsco, S. Branch [MD] Woodbine to Woodstock	I-III(IV)	1.91 ft -0.01 ft/hr	L8- Below Recom.	01h03m
Patapsco [MD] Woodstock to Elkridge	I-III	140 cfs -4 cfs/hr	R0- Lower Runnable	01h03m
Piney Run [MD] Arrington Road to Marriottsville	I-III(IV)	18 cfs 0 cfs/hr	L2- Below Recom.	01h03m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV	I-III	3.06 ft -0.02 ft/hr	L0- Below Recom.	01h03m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD	III-IV	3.06 ft -0.02 ft/hr	L6- Below Recom.	01h03m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake	II-III	3.06 ft -0.02 ft/hr	L8- Below Recom.	01h03m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD	II-III	362 cfs -5 cfs/hr	L7- Below Recom.	01h03m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV	I-II	539 cfs 0 cfs/hr	R0- Lower Runnable	01h18m
Potomac [MD] 1. Sandy Hook to Point of Rocks	I-II	4.91 ft 0.00 ft/hr	R4- Runnable	01h03m
Potomac [MD] 2. Violette's Lock/GW Canal Loop	I-II	3.87 ft -0.01 ft/hr	R3- Runnable	00h34m
Potomac [MD] 3. Great Falls (Center Lines)	V+	3.87 ft -0.01 ft/hr	R8- Upper Runnable	00h34m
Potomac [MD] 3. Great Falls (MD Lines)	V+	3.87 ft -0.01 ft/hr	H5- Above Recom.	00h34m
Potomac [MD] 3. Great Falls (VA Lines)	V+	3.87 ft -0.01 ft/hr	H1- Above Recom.	00h34m
Potomac [MD] 4. Mather Gorge to Lock 10	I-IV	3.87 ft -0.01 ft/hr	R2- Lower Runnable	00h34m
Potomac [MD] 5. Lock 10 to Little Falls	I	3.87 ft -0.01 ft/hr	R1- Lower Runnable	00h34m
Potomac [MD] 6. Little Falls	II-III(IV)	3.87 ft -0.01 ft/hr	R1- Lower Runnable	00h34m
Rock Creek [MD] 1. Rockville to Military Road	I(II)	36 cfs 0 cfs/hr	L8- Below Recom.	01h03m
Rock Creek [MD] 2. Military Road to Potomac River in D.C.	I-III	36 cfs 0 cfs/hr	L8- Below Recom.	01h03m
Savage [MD] Avilton Lonaconing Road to Head of Savage Reservoir	II(IV)	58 cfs -1 cfs/hr	L8- Below Recom.	01h03m
Savage [MD] Dam to North Branch Potomac River	III-IV	112 cfs 0 cfs/hr	L8- Below Recom.	01h03m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river	I-II	1.39 ft 0.00 ft/hr	L7- Below Recom.	00h19m
Town Creek [MD] I-68 to Potomac River	I	118 cfs + 3 cfs/hr	L9- Below Recom.	00h49m
Wills Creek [MD] Ellerslie to Eckhart Junction	I-II	127 cfs -6 cfs/hr	L9- Below Recom.	01h03m
Winters Run [MD] Pleasantville Road to Maryland Route 7	I-II	50 cfs 0 cfs/hr	L9- Below Recom.	01h03m
Youghiogheny [MD] 0. US Route 50 to Millers Run	I-II	15 cfs + 1 cfs/hr	L1- Below Recom.	01h03m
Youghiogheny [MD] 1. Tippy-Top	IV	165 cfs 0 cfs/hr	L9- Below Recom.	01h03m
Youghiogheny [MD] 2. Top	IV-V	165 cfs 0 cfs/hr	L9- Below Recom.	01h03m
Youghiogheny [MD] 3. Upper	IV-V	3.12 ft -0.34 ft/hr	R2- Lower Runnable	00h34m

River Name/Section

Class

Level

running?

Updated

Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road

I-III(V+)

12 cfs
0 cfs/hr

L1-
Below Recom.

00h34m

Antietam Creek [MD] 1) Upper: Oak Bridge to Hwy.68

I-II