North Canyon Road begins at Spooner Lake in Tahoe Nevada State Park. The unpaved road heads north, in to the park, uphill for about 4 miles to Marlette Lake. From there you head around the south end of the lake to the Dam and the start of The Flume Trail. It starts at 6950 feet and tops out at 8100 feet with a distance of about 5.5 miles to Marlette Dam.