Description - Arrowrock Reservoir is formed by Arrowrock Dam which is part of the Boise Project. The Reservoir is managed by the Boise National Forest, (Boise National Forest map). This 18 mile narrow canyon reservoir of 3,150-acres has limited access to 60 miles of shoreline. The reservoir is only 30 minutes from Boise and provides access to the city's nearest national forest.
- Access to the shoreline is limited. Fish species include rainbow trout, kokanee, yellow perch, whitefish, and bull trout. Season open year-round. The site offers: vault toilets, boat ramps and dock, parking, and dispersed camping.
Recreation - Boating, canoeing, windsurfing, and fishing are the major recreation activities at Arrowrock. Camping is available and hunting is also possible
Climate - The climate in Idaho varies with the elevation. The bottom of Hell's Canyon, Boise and other locations at low elevations receive hot summer weather. Temperatures at these elevations often reach 90 degrees or more during the summer months. At the same time the mountains will get mild temperatures with cool nights.
Winters are just as extreme with the mountains experiencing extreme conditions and temperatures. An average of 500 inches of snow falls on the Idaho highlands. Temperatures are known to dip below zero degrees F on many winter nights. The lower elevations enjoy a more mild winter season with less precipitation than the mountains. The sun is a constant throughout the year. Be sure to wear sunscreen and layered clothing in Idaho's unpredictable weather.
From Boise, ID, Follow Idaho 21 to Mores Creek Bridge, about 18 miles, then take the road to the right to Arrowrock Dam.