Greenwater River Road
Old-growth timber and mining history
Forest Service Road 70 follows the Greenwater River through some of the Cascades’ most pristine old-growth forest, past abandoned mining claims and logging camps from the early 1900s. The route starts near the Crystal Mountain ski area and winds 18 miles through dense timber, crossing multiple creek tributaries before reaching the Green River drainage. You’ll pass the old Greenwater mining district ruins around mile 12, where rusted equipment still sits scattered in the clearings.
This is moderate difficulty with several rocky creek crossings that can run deep during spring snowmelt. Stock 4WD with decent ground clearance handles it fine, though the creek crossings demand attention. Best tackled July through October when water levels drop. No permits needed, plenty of dispersed camping along the river, and you’ll likely see deer, elk, and black bear. The payoff is genuine Cascade solitude and some of the best fishing holes in Washington.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | High Clearance |
| Surface | Dirt |
| Features | Camping, Historic, Remote, Scenic, Water Crossings |
| Length (miles) | 18 mi / 29 km |
| Duration | 1 day |
| Max elevation (ft) | 4100 ft |
| Best season | July-October |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Enumclaw, WA |
| Land manager | US Forest Service |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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| Find on Google | Search on Google → |
Location
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