![Mackay Dam and Reservoir Site](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Mackay-Dam-and-Resevoir-Recreation-Site-Discover-Lost-River-Valley-Idaho.webp)
Mackay Dam and Reservoir Site
The Mackay Dam and Reservoir Site, a water management and recreation area on the East Fork of the Big Lost River, was constructed in the 1930s by the Bureau of Reclamation as part of a larger irrigation project in the area. The approximately 14,000-acre reservoir, stocked with trout and Kokanee salmon, offers boating, fishing, camping, hiking, and wildlife viewing opportunities. RV hookups and tent campsites, a day-use area, and boat launch are all available.
It is located on HW-93, approximately six miles north of Mackay.
![Big Lost River Access Trail](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Big-Lost-River-Access-Discover-Lost-River-Valley-Idaho.webp)
Big Lost River Access Trail
The Big Lost River Access Trail, located west of Mackay off White Knob Road, is a one-mile hiking trail that provides access to the Big Lost River.
Challis National Forest
Fishing Guides
![Lost River Outfitters](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Lost-River-Outfitters-Discover-Lost-River-Valley-Idaho.webp)
Lost River Outfitters
Professional fly-fishing guides based in Ketchum since 1984.
371 N. Main St., Ketchum, ID 83340
Daily 7AM-10PM
![Picabo Angler](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Picabo-Angler-Discover-Lost-River-Valley-Idaho.webp)
Picabo Angler
As full-service fly shop offering guided fly-fishing, fly-tying classes, food, and lodging on the banks of world renown Silver Creek River
18918 US-20, Picabo, ID 83348
Daily 6:30AM-6PM
![Idaho Angling Services](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Silver-Creek-Preserve-Discover-Lost-River-Valley-Idaho.webp)
Idaho Angling Services
Offering guided fly-fishing day or multi-day trips on Silver Creek, the Big Wood and Lost Rivers.
208 Picabo Desert Road, Bellevue, ID 83313
![Sun Valley Outfitters](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Sun-Valley-Outfitters-Discover-Lost-River-Valley-Idaho.webp)
Sun Valley Outfitters
Fly shop and guided fly-fishing outfitter in the Wood River Valley.
415 Sun Valley Rd East, Ketchum, ID 83340
Tue-Sun 10AM-5PM
![Silver Creek Outfitters](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Silver-Creek-Outfitters-Discover-Lost-River-Valley-Idaho.webp)
Silver Creek Outfitters
Family-owned hunting/fishing gear and apparel seller offering an assortment of guided fly fishing trips. Equipment rental is also available.
500 N. Main St., Ketchum, ID 83340
Mon-Sat 9AM-6PM, Sun 10AM-5PM
![Elkhorn Village Stables](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Elkhorn-Village-Stables-Discover-Lost-River-Valley-Idaho.webp)
Elkhorn Village Stables
Outfitters of horse pack trips and trail rides, also providing a variety of fishing opportunities in the Big Lost River region.
5536 Chilly Road, Mackay, ID 83251
![Idaho Wilderness Company Outfitters](https://www.discoverlostrivervalley.com/wp-content/uploads/2024/03/Idaho-Wilderness-Company-Outfitters-Discover-Lost-River-Valley-Idaho.webp)
Idaho Wilderness Company Outfitters
Offering elk, mule deer, bear, and wolf hunts in Idaho, along with Salmon River fishing and multi-day rafting.
505 River Run Road, Challis, ID 83226