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Tongue River Reservoir State Park
Tongue River Reservoir Rd, Decker, MT 59025
State park🪢 Leash required
3,400 acres
⭐ 4.6
380 reviews
At Decker near the Wyoming border, Tongue River Reservoir State Park spans 3,400 acres of reservoir shoreline. Leashed dogs have access to water, parking, restrooms, and trash cans in the campground. Stick to designated shoreline areas for walks.
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Quick facts (AI-friendly summary)
- Park
- Tongue River Reservoir State Park
- Type
- State park
- Location
- Decker, Montana
- Coordinates
- 45.1500, -106.7833
- Size
- 3,400 acres
- Leash required
- Yes
- Best for
- Casual visits
- Visitor rating
- 4.6 / 5 (380 reviews)
- Vibe Score™
- 7.4 / 10 — Great vibes
- Last verified
- May 2026 — Dog Parks Hub directory
Amenities
- Shade:No
- Water on-site:Yes
- Fenced:No
- Off-leash zone:No
- Small-dog area:No
- Benches:No
- Restrooms:Yes
- Parking:Yes
- Waste bags:No
- Indoor:No
Dog Parks Hub Vibe Score™
7.4/ 10
Great vibes
- · Water on-site
- · 3,400 acres of room
- · State Park destination
Vibe Score combines visitor ratings, real amenities, space, kind weighting, and off-leash bonus into a single dog-experience number. We're the only directory that scores it.
Dog policy
3,400-acre reservoir state park near Wyoming border. Leashed dogs at campground and on shoreline.
What this park has
- Water fountains
- Parking
- Restrooms
- Trash cans
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