From Squamish: The Mamquam River Forest Service Road (FSR) leaves Highway 99 about 1 km south of Squamish at the Apron parking lot (Stawamus Chief Provincial Park).  Follow for 13.2 KM then turn left on to the Skookum Dam Road.   Continue 6.6 KM to near end of road at the Dam and parking area at a locked yellow gate.  AWD or 4x4 highly recommeneded for this last 6.6 KM