In the heart of southwestern Idaho lies a hidden gem known as Arrowrock Reservoir. Built over a century ago as part of an irrigation system for the arid Boise Valley, this reservoir has become a haven for water recreation enthusiasts. Standing proudly at 348 feet, Arrowrock Dam was a marvel of engineering when it was completed in 1915, holding the title of the world’s tallest concrete arch structure until 1924. Situated at the confluence of the main channel and the south fork of the Boise River, 3,141 acres of pure waters makeup Arrowrock Reservoir, which stretches for eighteen miles along a scenic canyon. The ‘Y’-shaped reservoir meanders through the rugged landscape, offering a tranquil escape for those seeking a connection with nature. Despite its proximity to Boise, Arrowrock Reservoir remains a secluded retreat due to its steep canyon walls that deter most visitors. Nearby Lucky Peak Reservoir may attract more crowds with its recreational amenities, but Arrowrock’s untouched beauty appeals to those yearning for a quieter escape. Fishing enthusiasts flock to Arrowrock Reservoir to reel in rainbow trout, kokanee, and other species. At the same time, hikers can explore the surrounding Boise National Forest with its diverse wildlife and challenging trails. The area’s rich history, from the dam’s construction to the ongoing discussions about its future expansion, adds layers of intrigue to this tranquil oasis. For those seeking a break from the hustle of urban life, Arrowrock Reservoir beckons with its serene waters and rugged wilderness. Whether you prefer a day of boating or a peaceful hike along the shore, this hidden paradise offers a much-needed respite for the soul. Come and experience the magic of Arrowrock Reservoir – a true treasure waiting to be discovered!