Lower Granite Lake Professional Review and Guide
"This is a fairly long, but not strenuous, day hike or an easy overnighter to a sprawling sub-alpine lake with good fishing. Until recently this hike started at the Muddy Creek Trailhead, but the Forest Service has abandoned that trailhead, mainly because the trail went through an expansive wet meadow. You can still go to Lower Granite Lake from that trailhead, but be prepared to have very wet feet when you reach the lake—unless you like hiking in hip boots. The abandoned trailhead isn’t signed, but with a little research (or an old map), you can find it.
The first mile or so of the trail to the first junction (turn left here) drops steeply, and then keeps dropping, but not quite as steeply. A short 0.5 mile later you come to the Muddy Creek Cutoff Trail, which very precipitously drops into Muddy Creek. You can reach Lower Granite Lake that way, but for this route, turn right here and continue on to Rush Lake."