The ideal streamflow range for this run is between 500-1000 cfs, with peak flows occurring in May and June. The class rating for this section of the river is Class III-IV, with some Class V rapids during high water.
The segment mileage for this run is approximately 6 miles, with notable rapids such as "The Narrows" and "Deadly Eddy". The Narrows is a challenging rapid with a narrow chute and large boulders, while Deadly Eddy is a swirling eddy that can trap unsuspecting paddlers.
There are specific regulations for this area, including the requirement for a permit to access the river and a limit on the number of permits issued per day. Additionally, there are restrictions on camping and fires along the river.
| Last Updated | 2025-11-21 |
| River Levels | 43 cfs (2.0 ft) |
| Percent of Normal | 113% |
| Status | |
| Class Level | iii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 08254000 |
| Location | Reservations | Toilets |
|---|---|---|
Little Costilla Low Impact Camp
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Cimarron Campground
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NFS Cimarron Campground
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Ash Mountain Camp
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Middle Ponil Camp
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Little Costilla Camp
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