Discover Boysen Dam: Wyoming’s Hidden Water‑Power Gem
If you think Wyoming is only about wide‑open plains and rugged mountains, think again. Tucked near the charming town of Thermopolis, Boysen Dam offers a surprising blend of engineering marvel, scenic beauty, and outdoor adventure. Whether you’re a road‑trip enthusiast, a photography lover, or simply craving a peaceful lakeside escape, Boysen Dam should be on your Wyoming itinerary.
1. Introduction
Imagine standing on a sturdy concrete wall that holds back a shimmering reservoir, the wind whispering across the water, and the distant silhouette of the Wind River Mountains framing the horizon. That’s the experience at Boysen Dam, a striking dam‑type structure perched at 1,442 m (4,734 ft) above sea level in Thermopolis, Wyoming.
Beyond its practical role in water storage and flood control, the dam is the heart of Boysen State Park, a haven for anglers, hikers, and anyone who loves the great outdoors. With easy access from major highways and a host of nearby attractions, Boysen Dam makes a perfect day‑trip or a relaxed weekend base.
2. About Boysen Dam
A Brief History
Built between 1949 and 1952, Boysen Dam was named after Asmus Boysen, an early homesteader who first attempted to harness the Wind River’s power in the early 1900s. The current concrete structure replaced an earlier wooden dam that was destroyed by flood in 1945. Today, the dam forms Boysen Reservoir, a 22‑square‑mile lake that serves irrigation, hydro‑electric generation, and recreation.
Why It Matters
- Water Management – The reservoir stores vital water for agriculture across the Basin and helps regulate downstream flow.
- Hydropower – Boysen Dam generates renewable electricity for the region, contributing to Wyoming’s clean‑energy portfolio.
- Recreation Hub – As part of Boysen State Park, the dam creates a scenic backdrop for boating, fishing, camping, and wildlife watching.
Quick Facts
| Detail | Information |
|---|---|
| Type | Concrete dam 🏗️ |
| Location | Thermopolis, Wyoming, United States |
| Coordinates | 43.417102, -108.179125 |
| Altitude | 1,442 m (4,734 ft) above sea level |
| Nearby Town | Thermopolis (≈ 15 km) |
| Park | Boysen State Park |
| Reservoir | Boysen Reservoir (≈ 22 sq mi) |
3. How to Get There
By Car
The most convenient way to reach Boysen Dam is by car. From Thermopolis, follow U.S. Highway 20 west for about 15 km (9 mi); the dam sits just off the highway with clear signage.
If you’re coming from Jackson or Rock Springs, the fastest route is:
- Take I‑80 east to U.S. 20 (exit 33).
- Continue west on U.S. 20 through Alpine and Pinedale.
- Turn south onto Wyoming Highway 530 toward Thermopolis, then follow the signs to the dam.
From the Nearest Airport
- Jackson Hole Airport (JAC) – Approximately 190 km (118 mi), about a 3‑hour drive.
- Casper–Natrona County International Airport (CPR) – Roughly 210 km (130 mi), also a 3‑hour drive.
Both airports offer rental car services, making the drive to Boysen Dam straightforward.
Public Transportation
Wyoming’s rural nature means limited public transit. The most reliable option is a shuttle service from Thermopolis (several local operators run weekend tours). Check the Thermopolis Visitor Center for current schedules.
4. Best Time to Visit
| Season | What to Expect | Why It’s Ideal |
|---|---|---|
| Spring (April‑May) | Snowmelt raises water levels; wildflowers bloom along the shoreline. | Perfect for photography and early‑season fishing. |
| Summer (June‑August) | Warm days (70‑85 °F), full boat ramps, campground activity. | Peak recreation—boating, swimming, and hiking. |
| Fall (September‑October) | Crisp air, vibrant foliage, quieter parks. | Ideal for wildlife spotting and peaceful picnics. |
| Winter (November‑March) | Snow‑covered landscape, limited services. | Great for quiet contemplation, but many facilities close. |
Tip: The reservoir’s water level can fluctuate, so check the Boysen State Park website for current conditions before planning water‑based activities.
5. What to Expect
Scenic Views
From the dam’s crest, you’ll enjoy panoramic vistas of Boysen Reservoir stretching into the horizon, framed by the Wind River Range. The dam itself offers an impressive concrete façade—great for wide‑angle shots.
Outdoor Activities
- Boating & Kayaking – Two public boat ramps provide easy access. Rentals are available in Thermopolis.
- Fishing – The reservoir is stocked with rainbow trout, cutthroat trout, and kokanee salmon.
- Hiking – Trails such as the Boysen Reservoir Trail (≈ 5 mi loop) wind along the water’s edge, offering bird‑watching spots and picnic areas.
- Camping – The park’s Boysen Campground (30 sites) offers electric hookups, restrooms, and a short walk to the dam.
Wildlife
Keep an eye out for bald eagles, great blue herons, and white‑tailed deer. The reservoir’s shoreline is a favorite feeding ground for waterfowl, especially during migration seasons.
Facilities
- Visitor Center – Interactive displays about the dam’s engineering and the region’s ecology.
- Restrooms & Picnic Shelters – Scattered near the shoreline and at the campground.
- Interpretive Trail Signs – Explain the dam’s history and the surrounding geology.
6. Nearby Attractions
After soaking in the views at Boysen Dam, expand your adventure with these nearby spots (all within a 20‑km radius). Click the links for more details:
| Attraction | Distance | What to See |
|---|---|---|
| Sand Mesa Number 2 Dam | 10.1 km | Small earthen dam offering quiet fishing spots. |
| Sand Mesa Number 1 Dam | 10.8 km | Scenic picnic area with panoramic meadow views. |
| Lake Cameahwait Dam | 13.5 km | Tranquil lake ideal for canoeing and birdwatching. |
| Bonneville Dam (Wyoming) | 15.4 km | Historic dam with interpretive signage about early hydro‑power. |
| Middle Cottonwood Dam | 16.3 km | Popular spot for local anglers and sunset photography. |
Bonus: While you’re in Thermopolis, don’t miss the Hot Springs State Park—home to the world‑famous Hot Springs and a free‑flowing mineral water geyser.
7. Travel Tips
- Arrive Early in Summer – The park’s boat ramps fill up quickly on weekends.
- Bring a Picnic – While there are concession stands in Thermopolis, the dam’s picnic shelters let you dine with a view.
- Check Water Levels – Low reservoir levels can restrict boat launch access; the park’s daily bulletin is posted online.
- Pack Layers – Even in summer, evenings near the water can be cool, especially at higher altitude.
- Respect Wildlife – Keep a safe distance from nesting birds and never feed wildlife.
- Stay Charged – Cell service can be spotty; download maps offline or bring a paper map.
- Leave No Trace – Use designated trash receptacles and stay on marked trails to preserve the area’s natural beauty.
Ready to Explore?
Boysen Dam may not be the first name that pops up when you think of Wyoming, but its blend of engineering history, stunning scenery, and outdoor recreation makes it a must‑visit destination for any traveler seeking the road less traveled. Pack your camera, load up the car, and let the winds of the Wind River guide you to this hidden gem.
Happy travels, and may your journey be as smooth as the waters behind Boysen Dam!