Directions: From Fresno, take Highway 168 up to Huntington Lake, about 65 miles. From there, you can access the Middle Fork by way of Stump Springs Road. To get to the North Fork, continue from Highway 168 to Kaiser Pass Road. Kaiser Pass Road will cross the Middle Fork on the way to Edison Lake or you can access it from Florence Lake.
There is excellent fishing in both the South and Middle Fork of the San Joaquin. The river is utilized heavily for power and water useage with reservoirs at Edison Lake and Florence Lake. However, the fishing is quite good on both the upstream and downstream sections from these lakes. There is a good tailwater section below Mammoth Pool. It is a deep canyon with restricted access but very good fishing. You can enter from Rock Creek Campground off Minarets Road below Mammoth Pool Reservoir. A dirt road below the campground will get you close to the river. You have about 3.5 miles of stream and can exit just below the dam. The area above Mammoth Pool usually has high flows and is not generally fishable until August. This area can only be reached by hiking or horseback. The French Trail picks up at Mammoth Pool Road and proceeds along the northern shoreline of Mammoth Pool Reservoir. Another trail, Hell's Half Acre, is off Minarets Road and meets the river just below the confluence of the Middle and South Fork of the San Joaquin. Fishing is excellent here. The area is shadowed by a 1800 foot granitic dome known as Balloon Dome. This is a class 3 climbing rock along the southern face, a favorite among Sierran climbers.
Golden Stones (#12-14) and BWO (#18-20) are the main hatches in the early part of the season in June and July. Caddis will follow and remain a prevalent hatch until September.