The gauge is just downstream of the run, therefore should very accurately portray flows in the course.
0-600 CLASS II
600-1800 CLASS II+
1800-3500 CLASS III
3500-5500 CLASS III
5500+ CLASS III+
0-600 extremely low, not much play, maybe some very tame front surfing
600-1800 low runnable, DD moderate playboating, front surf, flatspin, very low angle cartwheels at the higher end of this range. 1000-1500 is the best for riversurfing/sup surfing
1800-3500 runnable, Best playboating levels. Deep enough for freestyle moves! On the higher end of this range riversurfing/sup surfing is great on DD Wave in the pocket
3500-5500 high Playable, but some features lose or have poor eddy access. The top wave is a blast for boats and boards!
5500+ extremely high, Above 5500 eddy access is mostly gone for all features. Some drop in play possible and some secondary waves are eddy accessible but change moment to moment.
|Cedar River at Charles City, IA|
|usgs-05457700||601 - 15000 cfs||III||00h45m||3970 cfs (running)|
|high Playable, but some features lose or have poor eddy access. The top wave is a blast for boats and boards!|
Gauge (1054 sq.mi. drainage) is in Charles City, so should accurately reflect water available at this location.
Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.