Arrowrock Reservoir is an 18-mile long, narrow canyon reservoir spanning 3,150 acres in Idaho's Boise National Forest, just 30 minutes east of Boise. The reservoir offers 60 miles of shoreline with limited access points. A single boat ramp with parking and restrooms provides the main put-in for paddlers.

Canoeing and kayaking are popular activities on Arrowrock's waters. The reservoir's tranquil atmosphere and stunning backdrop of forested mountains make for a scenic paddling experience. Wildlife viewing opportunities abound, with the chance to spot bald eagles, deer, and various bird species along the shoreline.

Arrowrock is open year-round for paddling, though summer offers the most comfortable conditions. Water levels can fluctuate significantly throughout the year. The reservoir is known for its crystal-clear waters, reflecting the surrounding landscape.

Fishing is permitted, with species including rainbow trout, kokanee, yellow perch, whitefish, and protected bull trout. Paddlers should be aware that motorized boats, including jet skis, also use the reservoir.

Facilities are limited, with vault toilets available at the main access point. Dispersed camping is allowed along the shoreline for those looking to extend their paddling trip. The lack of development contributes to Arrowrock's wild and natural character.

Paddlers should come prepared with all necessary supplies, as services are not available at the reservoir. The area's remoteness and limited cell coverage make self-sufficiency essential. Always check current conditions and reservoir levels before embarking on a paddling trip at Arrowrock.