These are the generally accepted river ratings for normal water levels indicated. Weather and water conditions can drastically alter the nature and difficulty of any river. Water level is extremely critical and it should be determined prior to accepting these general river guidelines. Ratings are not a substitute for careful scouting and a realistic evaluation of one's own paddling skills. Ratings are indicative of the paddler skill level required to attempt the entire section not just the difficulty of individual rapids.
Average Gradient | Maximum Gradient | Volume river vs Gradient |
Width of River | Ease of Rescue | Inaccessibility |
Difficulty of Rapids | Continuousness and/or rapid length | Obstacles, rocks, trees, undercuts |
Water Temperature |
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International Rating Definitions
International River Rating Vs. Keel-Hauler Rating
International Rating | Keel-Hauler Rating Points |
I | 0 - 7 |
II | 8 - 14 |
III | 15 - 25 |
IV | 26 - 33 |
V | 34 - 37 |
VI | 38 - 42 |
When Comparing Two River Sections
A lower rating does not mean that you can't run a harder section, only that you will be much more challenged
+/- 1 point | Very Similar |
+/- 2 points | Noticeable Difference |
+/- 3 points | Meaningful Difference |
+/- 5 points | Profound Difference |
Rate your Ability and compare to the following river ratings.
Revised 09/26/11
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Difficulty Rating |
River Section (State) level |
River Section (State) level |
River Section (State) level |
7 |
Little Beaver (OH) |
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8 |
Kokosing (OH) |
Pine Creek (PA) |
Vermilion (OH) (1’) |
10 |
Chattooga II (GA) |
N. Fk. Little Beaver (OH) |
|
12 |
Yough, Middle (PA) 2' |
Cacapon (WV) |
|
13 |
Slippery Rock, Lower (PA) 2' |
Casselman, Ft. Hill-Conflu.(PA) 2' Markleton |
Hiawassee (TN) 2000 cfs |
13 |
Lower Stonycreek River (PA) Carpenters - Greenhse Ferndale 3.5’ |
Tuckasegee, Sect 3 (NC)
|
|
14 |
Conoquenessing (PA) 1.6' Zelienople |
Middle Fork Tygart (WV) 5' Above Audra |
Yough, Below Bruner Run (PA) 2’ |
14 |
Laurel Hill Creek (PA) 600 cfs |
Quemahoning Crk- Boswell, Ferndale 5’ |
Difficulty Rating |
River Section (State) level |
River Section (State) level |
River Section (State) level |
15 |
Cattaraugus Creek Canyon (NY) |
||
16 |
Cuyahoga Gorge (OH) 600 cfs |
Missinaibi (Ont) |
Casselman To Ft. Hill (PA) 3' Markleton |
17 |
Rocky River, West Br. (OH) 2.5' |
Arkansas, SR24 to Nathrop (CO) 2.5’ |
New, Prince - Thurmond (WV) |
18 |
James River (VA) 3000 cfs |
Clear Shade (PA) Fern 5' |
Cheat Narrows (WV) 2' |
18 |
Potomac, N.Br., Bloom.(MD) 1000cfs |
Wolf River, Section 3 (WI) 400cfs |
|
19 |
Nantahala (NC) |
Hopeville Canyon (WV) 6' |
Cheat, Dry Fork (WV) Parsons 4.5' |
20 |
Haw, Lower (NC) 3000 cfs |
Cuyahoga Gorge (OH) 1200 cfs |
Slippery Rock Gorge (PA) 0' |
20 |
Shade (PA) Fern 4.5' |
||
21 |
French Broad -Hot Sp.(NC) 2000 cfs |
Meadow, Middle (WV) 500cfs |
Saint Francis, (MO) medium flow |
21 |
Stony Creek (PA) Fern 3.5' |
Slippery Rock Gorge (PA) 2' |
Pigeon (TN) 1200-1500 cfs |
22 |
N. Fk. Umpqua (OR) |
Trinity below Pigeon Pt (CA) |
Snake River, Canyon (WY) 5k cfs |
22 |
Tellico, Lower (TN) 400 cfs |
Chattooga III (GA) 1.8' * |
Rio Sico (Honduras) |
23 |
Clear Creek/Obed (TN) 2000 cfs |
Rogue River, Wild section (OR) |
Hudson Gorge (NY) 3' |
23 |
Yough, Lower (PA) 2' |
Upper Big Sandy (WV) |
Little Sandy (WV) |
23 |
Shavers Fork, Bemis (WV) 1000cfs |
Reventazon (Costa Rica) |
Russell Fork, above Breaks (VA) 800 cfs |
23 |
Wolf River, Section 4 (WI) 400cfs |
Peshtigo, Roring Rapids (WI) 12" or 5' USGS |
|
24 |
Arkansas, Brown's Canyon (CO) 1500 cfs |
Middle Fork Salmon (ID) 3' |
Lowe, Keystone Canyon (AK) |
24 |
Obed DBT - Nemo (TN) 2000 cfs |
Tygart, Arden (WV) 2.5' * |
Rio Blanco (Ecuador) |
25 |
Big South FK. Gorge (TN) 2000 cfs |
Big Laurel (NC) Newport 4000cfs |
|
25 |
Poudre, Rustic-Narrows pg (CO) 4' |
Snake River, Canyon (WY) >12k cfs |
Animas, City run (CO) |
25 |
Ocoee (TN) 1200 cfs |
Nolichucky (TN) 1800 cfs |
Savage (MD) 1000 cfs |
Difficulty Rating |
River Section (State) level |
River Section (State) level |
River Section (State) level |
26 |
Stony Creek (PA) Ferndale 5' |
Williams (WV) 450 cfs |
Cranberry (WV) 4.5' |
26 |
Cheat Canyon (WV) 2.5' Albright |
Black River (NY) * |
|
26 |
Lochsa (ID) 6000 cfs |
Eagle River, Dowds (CO) |
Nenana, Gorge (AK) |
26 |
Yough, Lower (PA) 5' |
Teeters Creek (WV) |
Grand Canyon (AZ) 10,000 cfs * |
26 |
Rio Cangrejal, Lower (Honduras) |
Gros Ventre (WY) |
Menominee, Piers Gorge (MI/WI) 2000 cfs |
27 |
Gauley, Lower (WV) 2800 cfs |
Meadow, Upper (WV) 1500 cfs |
Chauga, Gorge (SC) 1.5' |
27 |
Daddy's Creek, Canyon (TN) 1.5' |
N. Fork. Potomac, Kitzmiller (WV) 4.5' |
Moose, Lower (NY) 5' |
27 |
Ottawa River (Ont.) |
New River Gorge (WV) 1' |
Little River (TN) * |
27 |
Clear Creek (CO) - Lower Golden 425 cfs |
Beaver, Taylorville (NY) |
Nantahala Cascades (NC) |
28 |
Ocoee, Olympic section (TN) 1600 cfs |
Tellico, Upper (TN) 500 cfs |
Pacuare (Costa R) |
28 |
S. Fk. Payette, Staircase (ID) |
Poudre, Up. Misch to Pine View (CO) 4' |
Tygart, Gorge (WV) Belington 5' |
28 |
Nolichucky (TN) 4000 cfs |
Cuyahoga, Upper Gorge (OH), 600cfs* |
Doe Gorge (TN) |
29 |
Wilson Creek Gorge (NC) 0-3" |
Falls River (MI) medium flow |
Fikes Creek (PA) * |
29 |
Arkansas, Royal Gorge (CO) 1500 cfs |
Kicking Horse, Middle (BC) |
Kennebec Gorge (ME) 4500 cfs |
29 |
Middle Fork Tygart (WV) 4' Audra |
S. Fk. Payette, Canyon (ID) |
Cheat Canyon (WV) 5' Albright |
29 |
Rio Cangrejal, Top/Upper (Honduras) |
French Broad, NF (NC) |
Beaver, Moshier (NY) |
30 |
Tinkers Creek (OH) * |
Misahualli,Upper (Ecuador) |
Arkansas, Numbers (CO) 1500 cfs |
30 |
Yough, Top (MD) Oakland 3.0' |
Moose, Bottom (NY) 3' * |
Roaring Fork, Slaught. (CO) 3' |
30 |
Cheoah (NC) - 1000 cfs |
Stony River, Mt Storm to Kitz (WV) 5.5’ |
Pigeon Dries (NC) |
31 |
Big Sandy, Lower (WV) 5.2' - 6.1' * |
Chattooga IV (GA) 1.8' * |
Rio Cangrejal, Middle (Honduras) |
32 |
Upper Yough (MD) 2' |
Blackwater, Lower (WV) 350 cfs Davis |
Misahualli, Lower (Ecuador) * |
32 |
Clear Creek (CO), Black Rock 450 cfs* |
Laurel Creek (WV) |
Little River Canyon (AL) |
33 |
Gauley, Upper (WV) 2800 cfs |
Penobscot, Crbwrks (ME) 3500 cfs |
Big Sandy, Lower (WV) 6.8' * |
33 |
Deadwood (ID) Top - Bottom |
Rio Cosonga (Ecuador) |
Beaver, Eagle (NY) |
33 |
Pigeon, West Fork (NC) |
Difficulty Rating |
River Section (State) level |
River Section (State) level |
River Section (State) level |
34 |
Animas, Upper (CO) * |
Yough, Upper (MD) >2.6' |
Big Creek, Upper (TN) |
34 |
Tallulah Gorge(GA) 700 cfs |
Watauga Gorge (NC) 350 cfs |
Santeetlah, Upper (NC) |
35 |
Overflow Creek (GA) 2.5' |
Poudre, Narrows (CO) * |
Arkansas, Pine Cr. Can. (CO) 1000 cfs |
35 |
Russell Fork (KY) 1000 cfs |
Rio Jondachi, Lower (Ecuador) |
Poudre, Spencer Hts (CO) * |
35 |
Racquette (NY) 720 cfs |
Potomac - Great Falls |
Whitewater, Upper (NC) |
36 |
Horsepasture (NC) |
Payette, N. Fork (ID) 2000 cfs |
Green Narrows (NC) * |
36 |
Blackwater, Upper (WV) 350cfs Davis |
Blackwater, North Fork (WV) |
Big South Fork, Poudre (CO) * |
36 |
Little Pigeon, West Prong (TN) |
Pigeon, Big East Fork (NC) |
Meadow, Lower (WV) |
37 |
Linville (NC) |
Raven Fork (NC) |
Road Prong (NC) |
Difficulty Rating |
River Section (State) level |
River Section (State) level |
River Section (State) level |
River ratings from other sources
AWA's Examples of Class I-III Rated Rapids
AWA's Examples of Class IV Rated Rapids
AWA's Examples of Class V Rated Rapids