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Wilson Flats ATV Trail System

Saturday, June 01, 2019

Alt Names

Wilson Flat Trail System, Fairfield Area ATV Trails, Anderson Ranch Reservoir, Granite Mountain, Boise National Forest, Mountain Home District, South Fork Boise River, Mountain Home ATV Trails, Wilson Flat Trails

Last Known StatusTemporarily Closed  (due to fire damage caused by Elk and Pony Fires)

Right across from the Anderson Ranch Reservoir is 15 miles of moderately challenging ATV trails that form a nice scenic loop. The area offers panoramic views of the surrounding mountains, the dam and the South Fork Boise River. The trails wind through rolling hills and narrow ridgelines. This trail system is open to dirt bikes and ATVs less than 50 inches.

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Nearest CityMountain Home, ID
AddressAnderson Dam Road, Atlanta, ID 83601
Go Back To Idaho List
Street Map
Trail MapGo To Trail Map
From: Boise, ID
1) Take I-84 south to exit 95
2) Turn left (north) off the exit ramp onto SR-20, continue 20 miles
3) Turn left (north-west) on Anderson Dam Road, continue about 7 miles
4) Staging area is on the left (west).


LandNational Forest


Our RatingRatingGood
Recommended StayFull Day
Comments(Scroll Down For Visitor Reviews & Comments)


Permit RequiredYesIdaho OHV Registration Sticker
Dates OpenYear-Round
Reciprocity OfferedYes(WA,OR,NV,UT,MT)
Spark ArrestorYesA spark arresting silencer or end cap is required for all vehicles.
Noise LimitYes (96 dB)
Whip FlagsNot Required
Maximum Vehicle WidthYes (50 inches)
Allow Dirt Bikes, Trail Bikes and Motorcycles MotorcyclesPermitted
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsPermitted(maximum width 50 inches)
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTVs / SXSPermitted(maximum width 50 inches)
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4s / Jeeps (registered)Prohibited
Dune Buggy/Sand Rail
4x4 (unregistered)
Two Strokes /
2 Cycle Engines
No Restriction
Helmets RequiredYouth Onlyrequired for persons under 18 by state law
(RiderPlanet strongly recommends helmets for all riders.)
BicyclesNo Restriction
HikingNo Restriction
HorsebackNo Restriction
Camping / Overnight RV Parking Camping
Campfire Restrictions Campfires
Night RidingUnknown
Cross CountryProhibitedkeep on the trail
Emergency / Law Enforcement
Insurance*Disclaimer: Be Safe! RiderPlanet recommends insurance for all riders and visitors to the destinations depicted on this website.




Contact InfoBoise National Forest - Mountain Home District
2180 American Legion Blvd.
Mountain Home, ID 83647
(208) 587-7961
Contact InfoIdaho Parks And Recreation
5657 E. Warm Springs Ave
Boise, ID 83716
(208) 334-4197
CommentIdaho OHV Sticker Info



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Approx Size54,200 acres (85 sq mi)
Miles Of Trail15
Climate TypeForest
Elevation4200 to 5200 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Loose DirtThis trail has little loose dirt.Little
Hard PackThe trail has mostly hard pack terrain.Mostly
SandThis trail has no sandy areas.None
MudThe trail has little mud after it rains.Little
DustThe trail has little dust on typical days.Little
RocksThis trail has little rocks.Little
TreesThe trail has many trees.Many
Steep HillsThis trail has some steep hills.Some
Water CrossingsThe trail has no water crossings.None
Small JumpsThis trail has no small jumps.None
Large JumpsThis trail has no large jumps.None
BermsThe trail has few berms.Few
Sand/Gravel PitsThis national forest has no sand or gravel pits.None
Single TrackThis national forest has no single track trails.None
RoadsThis national forest has no roads.None
ShadeThis national forest has some shaded areas.Some
HazardsThis trail has few hazards.Few(hazards assumed marked but use caution)
Easy Terrain NoviceThis trail has mostly beginner terrain.Mostly
Moderate Terrain AmateurThis trail has some intermediate level terrain.Some
Difficult Terrain ExpertThis trail has little expert terrain.Little


First Aid First Aid5-20 Miles (SW)Elmore Medical Center (208) 587-8401
Gasoline Gasoline5-20 Miles (NE)Nitz Pine Store (208) 653-2222
Diesel Diesel5-20 Miles (NE)Nitz Pine Store (208) 653-2222
Potable Water Water5-20 Miles (E)Fort Running Bear RV and Camping Resort (208) 653-2494
RV Hookups RV Hookup1-5 Miles (E)Fort Running Bear RV and Camping Resort (208) 653-2494
RV Dump Station RV Disposal1-5 Miles (E)Fort Running Bear RV and Camping Resort (208) 653-2494
Primitive Camping Campground1-5 Miles (SE)Spillway Campground (208) 587-7961
Convenience Store Conv Store5-20 Miles (NE)Nitz Pine Store (208) 653-2222
Swimming Swim Area1-5 Miles (E)Anderson Ranch Reservoir
Body of Water Water BodyOn SiteSouth Fork Boise River
Boating Launch Boat Ramp5-20 Miles (NE)Pine Campground Boat Ramp (208) 587-7961
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