Flow information is available on the Web, updated almost daily,
at http://vortex.water.ca.gov:8001 (Central Valley river basins).
Monday morning at 6 AM the flow was 835 cfs. The run is about 13
miles long, and we estimated a gradient of about 50 fpm.
Here is a thumbnail sketch of the run:
Tight rapids for about 2 miles on the S Fork, where the
flow is about 33% of that at take-out. Watch out for a
brush-choked drop at a R bend about 1.5 miles down.
At the confluence, the N Fork maybe doubles the flow.
The N Fork is subject to diversions, and its trees seem
closer to the river than on the S Fork.
About 1 mile below, the river curves L thru a class III+
rapid, then Morgan Creek (?) comes in on the L.
About 2 miles below that, there is an old broached dam
(or bridge) with an extant tunnel on river R. Shortly
below is the only class IV on this run (scout R bank).
Fun class III rapids continue for another 2 miles. Most
have short pools in between, although one is continuous
for about 1/2 mile. Below there is a beautiful spring-fed
mini-falls on the R (probably drinkable).
Less intense class III rapids continue for another 2 miles
until a huge horseshoe bend. Below that Spring Branch creek
comes in on the L, and rapids ease to class II. Somewhere
in there a double pipeline crosses the river. Evidence of
cattle grazing becomes evident.
After another 2 miles, an artificial-looking waterfalls
with lots of water (perhaps overflow from Coleman Forebay)
comes in on the R. Shortly below is another inlet from
tubes of a power generation station. These diversions add
about 33% (?) to the take-out flow.
After another 1.5 miles there is a low-head dam, which at
800 cfs can be safely run on the far L. In another .5 mile
you reach the take-out at Coleman Fish Hatchery.
HAZARD: just below take-out is a two-tier concrete dam with
drowning-machine reversal below. Do not get near the dam!
There is a small beach on the R above the fish ladder.
To reach take-out, go W from I-5 on Gas Point Rd, bear L on Ball's
Ferry Rd, turn R on Ash Creek Rd, cross the Sacramento river, then
turn R on Jelly's Ferry Rd, and soon L on Coleman FH Rd.
To reach put-in from there, return to Ash Creek Rd, turn R and go
uphill, turn R on Wildcat Rd, bear R at a junction, then descend
and cross the N Fork of Battle Creek. You could put in there, or
continue to the S Fork crossing ahead (as we did).