Enjoy the Arrowrock reservoir boat rentals and watercraft service company offering the best in quality outdoor rental equipment. The lake is located east of Boise, ID; this 18-mile canyon reservoir on the Boise River holds 280,000 acre-feet of water and has a 60-mile shoreline. Boating, windsurfing, water skiing, wakeboarding, jet skis, and fishing are popular activities. Types of fish in the reservoir include rainbow trout, kokanee salmon, whitefish and yellow perch. Camping sites offer: vault toilets, boat ramps and dock, parking, and dispersed camping; and reservations for our services are required in advance.