| GRADE 1 | EASY |
Small rapids, waves regular and low.
Correct course easy to find. |
| GRADE 2 | MEDIUM |
Fairly frequent rapids, regular waves, easy eddies.
Course generally easy to recognise |
| GRADE 3 | DIFFICULT |
Rapids numerous, with fairly high irregular waves, broken water,
eddies and whirlpools.
Course not always easily recognisable. |
| GRADE 4 | VERY DIFFICULT |
Long rapid stretches with high irregular waves, difficult broken
water, eddies and whirlpools. Course often difficult to recognise. Inspection from bank nearly always necessary. |
| GRADE 5 |
EXCEEDINGLY
DIFFICULT |
Long unbroken stretches of rapids with difficult and completely
broken stretches of water, submerged rocks, very difficult
whirlpools and very fast eddies.
Previous inspection absolutely essential. |
| GRADE 6 | ABSOLUTE LIMIT |
All
previously mentioned difficulties increased to the limit of
practicability.
Cannot be attempted without risk to life. |
