Use sunset as your turnaround alarm.
This canyon starts at the edge of a subdivision and turns granite and steep in a hurry, which is why it works as an after-work hike for the south end of the valley. The first quarter to half mile crosses private land before you reach the lower reservoir, roughly 470 yards from the trailhead, so stay on the path. Above the reservoir the climb gets serious, and the Forest Service warns the trail becomes hard to follow in some sections. Sandy City watershed rules apply and no dogs are allowed.
Granite canyon to a roaring lower falls.
2 liters water, trail shoes, sun layer, snacks, small first-aid kit.
Make it a weekend: Sandy Urban Fishery (Fishing, 3 mi) · Tanners Flat Campground (Camping, 6 mi) · Willow Pond (Murray) (Fishing, 8 mi) · Millrace Pond (Taylorsville) (Fishing, 9 mi)
More hikes nearby: Lake Blanche (Hike, 6 mi) · Mount Olympus (Hike, 6 mi) · Donut Falls (Hike, 9 mi) · Grandeur Peak (West) (Hike, 10 mi)