Anderson Ranch Reservoir is a large impoundment on the South Fork Boise River in central Idaho, offering diverse paddling opportunities. The reservoir spans 7.4 square miles (4,730 acres), stretching 14 miles long and 1 mile wide with 50 miles of shoreline. Its maximum depth reaches 315 feet.

Access is available via improved dirt roads from Anderson Dam and Fall Creek. The reservoir features multiple boat ramps and docks, though specific paddling launch sites are not detailed. Campgrounds at Deer Creek, Curlew Creek, and Fall Creek provide overnight options.

Prime paddling season runs from June through October. Early summer (June-July) sees kokanee salmon schooling in 20-40 foot depths, while August-September brings them to shallower 10-20 foot zones near creek inlets. Fall colors and spawning activity create scenic paddling in October-November.

Key areas of interest include: - The Dam: Rocky face offers year-round paddling opportunities - Cottonwood Creek: Southwest inlet, active with spawning fish in fall - Spring Creek: Major spawning stream on east shore - The Island: Sunken island off marina, attracts fish - Long points: Cemetery, Sheep Creek, and Sockeye hold roaming fish schools

Wildlife viewing opportunities include kokanee salmon, rainbow trout, smallmouth bass, yellow perch, and bull trout. The reservoir is stocked to maintain healthy fish populations.

Facilities include vault toilets, a dump station, food service, and fuel. The Boise National Forest manages the area, keeping it open year-round. Paddlers should be aware of potential motorized boat traffic, especially during peak fishing seasons.

While primarily known for fishing, the reservoir's expansive waters and mountain scenery provide a picturesque setting for flatwater paddling excursions.