Custer County, Idaho, has 183 lakes, 1,116 rivers and streams, 111 reservoirs, and 126 other bodies of water, making it one of America’s premier fishing destinations. Since the Lost River Valley experiences a hard freeze every winter, ice fishing lets you catch fish throughout winter, and it’s a unique and fun way to go fishing with family and friends. All you need is fishing gear, a few pieces of special equipment, and a basic understanding of ice safety. Ice fishing on the Mackay Reservoir, right outside of Mackay, is one of winter’s premier activities in the area. 47-acre Jimmy Smith Lake, also located in Custer County, is a great spot to fish for rainbow trout.