What would be cool is if the land was bought up by a conservatory organization, because although they might stop this for a while, it will probably rears it's ugly head up in the future as the population in the area grows.
This was done along a white water section of the South Fork American River near Sacramento. it takes a lot of money but it can be done.
However, there are about 200,000 people who go down that river every year, way more than the people who use the Chehalis Western.
"Thurston County-owns and operates 22 miles of Chehalis Western Trail in public ownership. The trail is an integral and significant linkage in the planned 48-mile county-managed trail system. It features four trailhead facilities with parking, restrooms, and picnic facilities at the Chambers Lake Boat Launch, Scenic Overlook at Chambers Lake, the Yelm Highway Pedestrian Overpass, a trailhead at 67th Avenue with parking and trail information, and a parking area at Fir Tree Road. The northern section has a trailhead at Woodard Bay with parking and restrooms. With spectacular views, the trail system provides excellent opportunities for users to enjoy a tranquil and refreshing outdoor recreation experience any time of the year."