Frost is entering the ground, conditions are good for hiking and fat tire biking. Many trails are bare, shaded areas have snow cover measuring 1/2"-1" or more.
November 29: flurries
We usually start grooming the ski trail some time in early December as the deer gun hunts wind down. It's all very weather dependent, we need snow.
It was a busy summer and fall for volunteers maintaining the Blue Hills Trail in northwest Wisconsin. For the past few years, wet summers have aggravated areas prone to erosion. Fortunately, the latter part of this summer was quite dry. As a result, several important projects were completed.
Here’s a quick summary of our accomplishments:
Details regarding some of the major accomplishments…
Erosion control is always an ongoing battle in the Hills. The annual spring runoff and all-too-frequent summer deluges take their toll on the downhills. Our bridges appear to be in good shape. However, on the East Side the long downhill north and southeast of intersection #5 really took a beating this summer. The washouts in this area were repaired with bulldozing performed in early August, with grass seed spread quickly thereafter. Many thanks to DNR Forester Gary Sarauer for his dozer skills, and the Rusk County Forestry Department for donating the cost of Gary's dozing time.
Staining the warming house
Our lovely warming house at the trailhead was built in 1998. Since it's on County land, technically it belongs to Rusk County. However, it really 'belongs' to our membership since we're responsible for its upkeep. It's been stained on two prior occasions since it was built. This summer, we hired Dave Roth (Ladysmith professional painter) who performed an exterior beauty treatment. Thanks to Dave for his extra special attention in cleaning with an industrial cleaner, then pressure washing, then returning a couple days later to brush on a Benjamin Moore ArborCoat translucent waterborne stain. In the absence of power and running water, that was quite a challenge. Thanks to Bjorn Hanson (Burnell's Decor in Rice Lake) for donating the stain. Thanks to Jeld-Wen Windows (Hawkins) for donating and replacing all the windows in January 2020.
Unplugging a culvert that was flooding the trail
In July we discovered a plugged culvert on the trail that crosses from the East Side to the West Side trails (this culvert is located between #23 and Letter L). The plugged culvert caused water to back up parallel to the Fire Lane Road for about 1/2 mile. Water was briskly flowing over the ski trail, and threatening to wash out the trail and culvert. In August, Steve P and Jerry S teamed up to open the plugged culvert, and rescue this section of trail. flow, then photos showing the trail after the culvert was functioning normally. A huge thank you to Steve and Jerry!
Replacing an aging culvert
On the West Side, the steep down/up segment of trail between J-K has presented an always changing challenge for trail maintenance. Seems like each year the water passing through that narrow valley (and associated culvert) finds a new way to make for a difficult trail crossing. We've tried various methods to negotiate the water that often flows over the trail: a sheet of plywood supported by 2x4s; taking delivery of a dump-truck load of rock to create a rock ford; bulldozing to repair the erosion; or in many winters, simply waiting for cold weather to freeze solid the standing water.
This summer, that area between J-K was flooded with knee deep water. After draining that water, we recruited a heavy equipment operator to evaluate the site. At his advice, we replaced the failing culvert where the stream crosses the trail. His backhoe work widened and smoothed the trail, and created a spot where high water events can bypass the culvert.
Bridging a small intermittent stream
For many years, we've battled with erosion problems at a specific trench on the West Side of the trail system. It's located about 200 meters west of Letter I (refer to the above map). It's a 'choke point' for all the water that drains the west loop (D-F-G-H-I). As this trench has gradually enlarged and deepened over the years, it's posed an increasingly challenging obstacle for wintertime grooming and summertime mowing.
We've used various options to fill the deep trench, but they’ve all been washed out the next Spring. So now we decided to try placing a bridge at that site. In general, we try to avoid the use of bridges on the trail system since they're more difficult to maintain, especially with climate change triggering more numerous and heavier downpours.
The bridge was built in stages over the course of a couple weeks. The finished bridge looks pretty nice, it’s solid, and hopefully will withstand springtime runoff.
Enjoy the photos that follow.
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