Frio, Texas, US
|Usual Difficulty||II-III (for normal flows)|
|Avg. Gradient||14 fpm|
|Frio Rv at Concan, TX|
|usgs-08195000||200 - 10000 cfs||II-III||00h32m||40 cfs (too low)|
Normally a scenic day trip, this section of the Frio also has numerous playspots at higher levels. At low flows, it is also popular with swimmers and tubers.
Difficulty rating is taken from Texas Whitewater and paddler beta. Some rapids described below are not yet rated due to lack of information.
Distances and gradient measured using GIS tools in 2015.
|Mile||Rapid Name||Class||Features (Legend)|
|0.0||FM 1050 Bridge||N/A|
|2.7||Low-Head Dam (Garner State Park)||N/A|
|3.2||CR 350 (Old Leakey Rd) Low-Water Crossing (Mager's Crossing)||N/A|
|7.6||CR 348 (River Rd) Low-Water Crossing (Seven Bluff Crossing/Third Crossing)||N/A|
|9.5||CR 348 (River Rd) Low-Water Crossing (Kenneth Arthur Crossing/Second Crossing)||N/A|
|12.0||SH 127 Bridge (Neal's Crossing/Concan Crossing/First Crossing)||N/A|
Parking is available in the highway right-of-way on the south (downstream) side of the highway on either side of the bridge (the land on this side of the road is part of Garner State Park.)
Not known to be hazardous
At "normal" (recreational) flows, river left and center forms a slide, and far river right forms a runnable drop, but at higher flows, the drop turns into a retentive hydraulic.
Up to about 1500 cfs, the dam forms a runnable slide with a small hydraulic at the bottom. At higher levels, it is known to be deadly. Portage on river left.
The entire river narrows and takes a jog to the left through some trees. At high flows, watch for strainers here.
Limestone features constrict the river, forming a wave train at about 800 cfs and higher. The first wave is surfable.
If the river is running at 1500+ cfs, this low-water crossing creates at 50-yard-wide play hole that gives up spins. At 2500+, it becomes one of the best play holes in Texas, deep enough for areal moves.
Low-water bridge, generally passable at "normal" (recreational) flows. If there is insufficient headroom under the bridge, portage at river left. If water is over the bridge, it can be run at river left, with caution.
Straightforward rapid with a small boulder garden drop in the middle.
3.5' drop that is runnable river right at all levels.
Bridge is known to be hazardous at high levels, but a new bridge is being constructed that may alleviate that issue. Take out at river left.