This drainage is a popular recreational area for Bozeman locals with a large reservoir built in the 1940's as its centerpiece. The reservoir has a hold capacity of 8,000 acre feet of water. Its coves and caves, plus easily accessible pier, offer great trout fishing spots. Hyalite Reservoir is used for drinking water for the city of Bozeman and to irrigate the Gallatin Valley. The Hyalite Drainage Recreational Area is surrounded by 10,000-foot mountain peaks, creeks, streams, lakes and numerous waterfalls. The hikes to Blackmore Lake, Palisade Falls, Emerald and Heather Lakes (East Fork of Hyalite Creek Trail), and the trail to Hyalite Lake all lie in the Hyalite Canyon.