Below the park the river flows for a few more miles before
reaching Riverside Campground. After passing the campground
it enters beautiful Cardiac Canyon. The canyon provides
tremendous pocket water angling for nearly 8 miles before
reaching Upper and Lower Mesa falls. These falls are
from 65 to 115 feet in height.
After the river cascades over Mesa Falls it slows
down in pace once again though not as slow as through
the Harriman State Park area. The river flows for several
miles before reaching the confluence of the Warm River.
After joining the Warm River the Henry's Fork flows
for several more miles before reaching Ashton Reservoir.
This stretch of river is characteristic of long riffles,
runs, and deep pools. Brown trout and a small population
of Yellowstone Cutthroats join the population of rainbows
below Mesa Falls.
Below Ashton Reservoir is another tail-water section
very worthy of recognition. This seven mile area from
Ashton Dam to Chester Reservoir is an excellent cold
water fishery. The river here is exceptionally prolific
as well. Many insects hatch here with good dependability.
Some anglers choose to fish this area because it is
less recognized and crowded then the famous stretch
upriver through Box Canyon and Harriman State Park.
The section of river below Chester Reservoir is a good
section of river but a little more limited to access.
Some quality fish are found throughout this stretch
Hatches are excellent on Henry's Fork. It is one of
the most prolific of all the first class rivers of
the western states. Mayflies include Pale Morning Duns,
Blue-winged Olives, Green Drakes, Gray Drakes, and
Mahogany Duns as well as a few other less significant
ones. Caddis are also extremely prolific along with
stoneflies such as Golden Stones, Salmon Flies, and
Yellow Sallies. These hatches, although not as diverse
as the Delaware River in New York State, are extremely
prolific. Blizzard hatches of these insects are possible
on any given day during the season.
Access to Henry's fork can be found along Route 20,
Route 47, and other side roads along the river. There
are several areas to fish along the river which are
Henry's Fork of the Snake is a spectacular river and
fishery. Many anglers come to this river every season
to fish its diverse waters. The closest commercials
flights are in Idaho Falls, Idaho and Jackson, Wyoming.
If your looking for quality dry fly fishing or fishing
for oversized trout, then Henry's Fork is a superb