Pathfinder Reservoir, nestled in the rugged landscapes of
southern Natrona and Carbon counties in Wyoming, is a striking blend of
history, engineering, and outdoor recreation. Created by the monumental masonry
Pathfinder Dam, this reservoir sits about 47 miles southwest of Casper
on the North Platte River, boasting 117 miles
of shoreline and over 1,016,000 acre‑feet
of storage capacity.
A Legacy of Engineering
Constructed between 1905 and 1909, Pathfinder Dam is built
from granite quarried from local canyon walls, featuring solid-faced blocks
over 24–36 inches thick
atop a core of massive, irregular stones. At completion, the total cost
exceeded $2.5 million, a
notable accomplishment given its rugged remote location Named in honor of
explorer John C. Fremont—“the Pathfinder of the West”—the dam is listed on the
National Register of Historic Places.
Today, the Pathfinder Interpretive Center, housed in
the original dam tender’s residence, preserves this remarkable history. Nearby,
a 1.7‑mile interpretive trail—accessible via historic suspension bridge or from
the dam itself—provides sweeping views and educational signage.
Recreation & Fishing
Pathfinder Reservoir is revered for its blue‑ribbon
fishing, drawing anglers’ year‑round. Stocked annually with rainbow and
cutthroat trout, the reservoir also offers brown trout, people’s favorite Ohrid
trout, perch, and trophy-caliber walleye. Locals and visitors especially
converge each January for the HAWG Ice‑Fishing Derby, a highlight of
winter recreation.
Recreation is supported by three campgrounds and three boat
ramps, with facilities managed through the Bureau of Reclamation in partnership
with Natrona County and the BLM Visitors can launch boats, bank fish, or enjoy
tranquil canoe paddles across this scenic water body.
Wildlife & Natural Beauty
Much of the reservoir is encompassed by the Pathfinder
National Wildlife Refuge, covering over 16,800 acres and managed by the U.S. Fish & Wildlife
Service. The refuge borders portions of the reservoir and provides habitat for
migratory birds, pronghorn, and other wildlife across wetlands and grasslands.
Visiting Tips
- Access:
Via U.S. Highway 220 to County Roads 408 or 410, about a 10‑minute drive
from Alcova Reservoir.
- Amenities:
Campgrounds—including the reservation-based Diabase Campground—boat ramps,
marina facilities, restrooms, and interpretive trail access.
- Climate:
Arranged in a cold semi‑arid climate with wide seasonal swings ranging
from over 100 °F in summer to potentially −39 °F in
winter.
- Regulations:
Wyoming fishing license required. Daily limits typically include up to six
trout (combined species), with only one permitted over 16 inches.
Conclusion
Whether you are a history buff drawn to the dramatic masonry
of Pathfinder Dam, an angler chasing trophy trout and walleye, or a nature
lover seeking expansive birdlife and scenic solitude, Pathfinder Reservoir
offers an unforgettable Wyoming experience. From educational trails and
historic sites to wide-open waters and wildlife-rich landscapes, this reservoir
continues to stand as a testament to early western ingenuity—and modern outdoor
enjoyment.
Let Wild West Curations help you plan the perfect camping
trip, fishing adventure, or visit to nearby attractions!
*Pictured owned and taken by Becky Taylor*
