Overview
Merritt Reservoir is the centerpiece of Samuel R. McKelvie National Forest, a 2,900-acre lake in the heart of the Nebraska Sandhills created by a dam on the Snake River. The reservoir loop is an easy 5-mile walk around the northern portion of the lake through open Sandhills grassland, staying close to the shoreline with views across the water throughout.
The trail is primarily a nature walk: flat terrain, good bird and wildlife viewing, and easy access to shore fishing spots throughout. The lakeside campground makes this a natural morning or evening walk for campers at the reservoir recreation area.
No permit is required for the trail. A day use fee applies at the recreation area parking lot (as of 2026).
The Route
The full loop (5 miles). The trail begins at the main recreation area parking lot and follows the shoreline counterclockwise around the northern coves. The terrain is Sandhills grassland, with the Sandhills' characteristic rolling dune topography muted to nearly flat near the reservoir margins.
The first two miles traverse the east shore, with wide views across the main basin of the lake. Pelicans and cormorants are often visible on the open water. Osprey hunt the reservoir regularly and are frequently seen diving from 40 to 50 feet.
The north end of the loop reaches the Snake River inlet, where the river enters the reservoir through a cattail and willow marsh that concentrates waterfowl. This is the best birding section of the loop, particularly in the morning when ducks and herons are actively feeding.
The west shore return passes through more sheltered coves popular with bass anglers. The loop ends at the campground beach area before returning to the parking lot.
When to Hike
April and May: Peak waterfowl migration and sandhill crane staging nearby. The reservoir is at its fullest and most productive for birds.
June through August: Warm and sunny. The evening loop walk from camp is the most popular time, with fishing from shore as a secondary activity.
September and October: Fall migration brings shorebirds and ducks to the reservoir margins. Cooler temperatures make for a comfortable walk.
What to Bring
Many hikers carry 1.5 liters of water for this loop. Water is available at the recreation area. Binoculars are worth having for the waterfowl viewing. A fishing rod and Nebraska fishing license (as of 2026) are worth bringing if fishing interests you.
Trailhead Access
From Valentine on US-20, go west about 20 miles, then follow signs south to Merritt Reservoir. The last portion of the drive is on paved road to the recreation area entrance.
Nearby
The Niobrara Headwaters Trail provides a grassland and creek experience a few miles from the reservoir. The Snake River Falls Trail is a short detour worth combining with a reservoir visit. See the full Samuel R. McKelvie National Forest guide for all trail options. Follow Leave No Trace principles around the reservoir, especially regarding fish cleaning and waste disposal.