Original publication date 30 November 2015 Methow Valley News
Black Canyon Road south of Methow has a new canyon, compliments of last Tuesday’s rainstorm on Nov. 17.
While the upper valley received over a foot and a half of
snow, the lower valley received an equal amount of rain, if not more.
One foot of snow generally equates to 1 inch of rain. According to Agweb.com, our region recorded between 3-4 inches of rain in November. A look at waterdata.usgs.gov
revealed that on Nov. 14, the Methow River near Pateros was flowing at
an average of 400 cubic feet of water per second (cfs). On Nov. 18, the
day after the storm, the Methow River was flowing at 900 cfs, double the
rate.
Along the boundary of the most recent burn in Black
Canyon, flow rates of a small stream rose from single-digit cfs to a
raging 350 cfs. More than 10,000 to 15,000 cubic yards of rocks, mud,
trees, and other debris was displaced, plugging a culvert
four-and-a-half miles up Black Canyon and resulting in a deep washout
that resembles a small canyon. The road is currently closed one mile
from Highway 153, and will reopen next spring after the road is rebuilt.
According to Cathy Dowd, public affairs officer for the
U.S. Forest Service Okanogan-Wenatchee National Forest, it is common
practice to remove culverts after a fire to keep the road from washing
out.
“The public may have the misconception that we’ve closed a
road when we remove a culvert, but it is only temporary,” she said.
“When culverts are removed, the water and debris are able to flow over
the road and not wash it out.”
As this one culvert was not removed, the damaging result will keep the road closed until repairs can be made next spring.
Black Canyon road is used by many recreationists
year-round. In the winter, it is a popular snowmobile route with groomed
trails leading to spectacular views of Lake Chelan. In the summer,
outdoor enthusiasts enjoy the route to Summer Blossom Trail and onward
to Angels Staircase and the Golden Lakes. In September, HawkWatch
shuttles groups up Black Canyon to Chelan Ridge to watch the annual hawk
migration. Due to recent fire events, summer and fall visitors had to
find alternate routes, and this winter, Black Canyon will continue to
hold her secrets.
A recent drive along the South Fork of Gold Creek revealed
minimal damage to the road, but the results of post-fire mud flows and
high winds were apparent. Fallen trees, rocks, and erosion, had impacted
the area.
The recent rains and the freeze-thaw
cycle resulted in hazardous conditions on national forest roads
throughout the region in the Entiat, Wenatchee River, Cle Elum, and
Methow Valley ranger districts. Before leaving home, people should
contact local ranger stations for current road and trail conditions.
Plan for alternate exit routes in case your return route becomes
inaccessible or blocked.