RV Dump Stations In Decker, Montana

Tongue River Reservoir State Park, a few miles north of Decker, is your option. Our database lists one dump station in the area, and it is the park facility, which operates for a $5 fee during peak season. There is no municipal or standalone station in this remote corner of southeastern Montana. Because the park is the only game in town, plan to service your tanks there while you camp or pass through, confirm the season is open before you make the curvy drive in, and bring extra water since the dump station itself does not currently have water at it.

No. The single dump station our database tracks near Decker is the Tongue River Reservoir State Park facility, and it charges a $5 fee, so the free percentage here is zero. Given how remote this area is, with no fuel or groceries in Decker itself, there is no free alternative to route around. The $5 dump is genuinely cheap for what it provides this far from services, so the smart plan is to pay it and combine your dump with a camping night and any available water fill rather than looking for a workaround that does not exist out here.

The dump station is $5 during peak season. Camping runs about $18 a night for non-electric sites, $24 for a single electric site, and $48 for double-electric, plus standard Montana State Parks fees. The park has 81 electric and 83 non-electric sites across areas like Campers Point, Pee Wee North, Pee Wee South, and Sand Point. Because there is no fuel or groceries in Decker, factor in a resupply drive to Sheridan or Hardin as part of your real trip cost, and try to arrive stocked so the only in-park spending is your site and the dump.

Not at the dump station itself currently. The park has water faucets that run during peak season when weather permits, but the supply is not guaranteed, and the dump station specifically does not have water at it right now. Because of that, we bring extra water on every Decker trip and fill the fresh tank whenever a working faucet is available in the park. Do not plan to arrive on empty expecting to fill at the dump. Treat the reservoir area as a place where water can be intermittent, and carry enough to cover your whole stay if needed.

During the park peak season, roughly the third Friday of May through the third Sunday of September. Outside that window the dump station closes for winter and is not available, and the curvy access roads can be muddy in spring or impassable in winter. If you are planning an early-spring or late-fall trip, confirm the current season dates through Montana Fish, Wildlife and Parks before you drive in, because arriving to a closed facility this far out with full tanks is a real problem. The safest bet is to visit and service tanks squarely within the summer peak.

Decker sits on Montana Secondary 314 and Highway 566, and both are extremely curvy, narrow roads that wind along the Tongue River. They are difficult even for normal vehicles, so large Class A motorhomes will find them challenging, while fifth wheels and travel trailers are manageable with care and patience. Interstate 90 is about 75 miles north via MT-314 to Hardin. Plan a slow, deliberate approach, keep both lanes clear on tight bends, and avoid driving these roads after dark or in bad weather. The scenery along the Tongue River makes the careful drive worthwhile.

For summer weekends, yes, we strongly recommend it. The park has 81 electric sites that fill on peak-season weekends, and you can reserve them through Reserve America. Non-electric sites are largely first-come, first-served at $18 a night. Because this is your only local option for camping and dumping, having a reservation removes the risk of arriving after a long, curvy drive to find the park full. Off-peak, availability is easier, but remember the dump station and services are only running during the roughly mid-May through mid-September peak season anyway.

Not in Decker, which has neither. The nearest fuel is in Sheridan, Wyoming, about 30 miles south, or Hardin, Montana, about 75 miles north. Groceries are in those same towns, so stock up fully before you arrive. This is one of the more remote RV destinations in the region, and running low on fuel or supplies here means a long backtrack on curvy roads. We treat Sheridan as the practical resupply point on the way in, top off everything there, and arrive at Tongue River Reservoir ready to stay put and just handle the $5 dump and any water fill at the park.

Yes, it is the main reason many RVers make the trip. The 12-mile reservoir sits at 3,468 feet and holds excellent walleye, bass, and northern pike, drawing over 50,000 visitors a year. Bring your gear and a Montana fishing license, and plan to launch a boat if you have one. The combination of good fishing, cool nights, and a working dump and camping setup at the state park makes Decker a genuine destination rather than just a stopover, as long as you have arrived self-sufficient and timed your visit to the summer peak season.

Very limited to nonexistent. This is remote southeastern Montana, so do not rely on a signal for navigation or emergencies. Download offline maps before you leave Sheridan or Hardin, let someone know your route and expected return, and carry a paper map or GPS that works without data. The lack of connectivity is part of the appeal for people who want to unplug at the reservoir, but it also means you need to plan your dump, fuel, and resupply timing in advance rather than looking things up on the fly once you are out on MT-314.

Summer, roughly late May through mid-September, when the park is in peak season, the dump station and water are operating, and the roads are reliably clear. Warm days and cool nights at elevation make for great camping, and the fishing is at its best. Spring can be muddy with snow possible into May, and fall is pleasant but the season and dump close around the third Sunday of September. Winter is out: the dump closes, temperatures can hit -20F, and the roads may be impassable. Aim squarely for the summer window for the smoothest trip.

BLM and national forest land in southeastern Montana may offer dispersed camping, but it is very remote and requires complete self-sufficiency, and it does not solve your dump problem since there is no free facility out here. The Tongue River Reservoir State Park dump at $5 is the only legitimate tank service in the area. If you do boondock nearby, plan to come into the park to dump and fill water during peak season, and understand that the combination of curvy roads, no services, and limited cell coverage makes solo self-sufficiency here more demanding than in most places.

Tongue River Reservoir State Park, a few miles north of Decker, is your option. Our database lists one dump station in the area, and it is the park facility, which operates for a $5 fee during peak season. There is no municipal or standalone station in this remote corner of southeastern Montana. Because the park is the only game in town, plan to service your tanks there while you camp or pass through, confirm the season is open before you make the curvy drive in, and bring extra water since the dump station itself does not currently have water at it.

No. The single dump station our database tracks near Decker is the Tongue River Reservoir State Park facility, and it charges a $5 fee, so the free percentage here is zero. Given how remote this area is, with no fuel or groceries in Decker itself, there is no free alternative to route around. The $5 dump is genuinely cheap for what it provides this far from services, so the smart plan is to pay it and combine your dump with a camping night and any available water fill rather than looking for a workaround that does not exist out here.

The dump station is $5 during peak season. Camping runs about $18 a night for non-electric sites, $24 for a single electric site, and $48 for double-electric, plus standard Montana State Parks fees. The park has 81 electric and 83 non-electric sites across areas like Campers Point, Pee Wee North, Pee Wee South, and Sand Point. Because there is no fuel or groceries in Decker, factor in a resupply drive to Sheridan or Hardin as part of your real trip cost, and try to arrive stocked so the only in-park spending is your site and the dump.

Not at the dump station itself currently. The park has water faucets that run during peak season when weather permits, but the supply is not guaranteed, and the dump station specifically does not have water at it right now. Because of that, we bring extra water on every Decker trip and fill the fresh tank whenever a working faucet is available in the park. Do not plan to arrive on empty expecting to fill at the dump. Treat the reservoir area as a place where water can be intermittent, and carry enough to cover your whole stay if needed.

During the park peak season, roughly the third Friday of May through the third Sunday of September. Outside that window the dump station closes for winter and is not available, and the curvy access roads can be muddy in spring or impassable in winter. If you are planning an early-spring or late-fall trip, confirm the current season dates through Montana Fish, Wildlife and Parks before you drive in, because arriving to a closed facility this far out with full tanks is a real problem. The safest bet is to visit and service tanks squarely within the summer peak.

Decker sits on Montana Secondary 314 and Highway 566, and both are extremely curvy, narrow roads that wind along the Tongue River. They are difficult even for normal vehicles, so large Class A motorhomes will find them challenging, while fifth wheels and travel trailers are manageable with care and patience. Interstate 90 is about 75 miles north via MT-314 to Hardin. Plan a slow, deliberate approach, keep both lanes clear on tight bends, and avoid driving these roads after dark or in bad weather. The scenery along the Tongue River makes the careful drive worthwhile.

For summer weekends, yes, we strongly recommend it. The park has 81 electric sites that fill on peak-season weekends, and you can reserve them through Reserve America. Non-electric sites are largely first-come, first-served at $18 a night. Because this is your only local option for camping and dumping, having a reservation removes the risk of arriving after a long, curvy drive to find the park full. Off-peak, availability is easier, but remember the dump station and services are only running during the roughly mid-May through mid-September peak season anyway.

Not in Decker, which has neither. The nearest fuel is in Sheridan, Wyoming, about 30 miles south, or Hardin, Montana, about 75 miles north. Groceries are in those same towns, so stock up fully before you arrive. This is one of the more remote RV destinations in the region, and running low on fuel or supplies here means a long backtrack on curvy roads. We treat Sheridan as the practical resupply point on the way in, top off everything there, and arrive at Tongue River Reservoir ready to stay put and just handle the $5 dump and any water fill at the park.

Yes, it is the main reason many RVers make the trip. The 12-mile reservoir sits at 3,468 feet and holds excellent walleye, bass, and northern pike, drawing over 50,000 visitors a year. Bring your gear and a Montana fishing license, and plan to launch a boat if you have one. The combination of good fishing, cool nights, and a working dump and camping setup at the state park makes Decker a genuine destination rather than just a stopover, as long as you have arrived self-sufficient and timed your visit to the summer peak season.

Very limited to nonexistent. This is remote southeastern Montana, so do not rely on a signal for navigation or emergencies. Download offline maps before you leave Sheridan or Hardin, let someone know your route and expected return, and carry a paper map or GPS that works without data. The lack of connectivity is part of the appeal for people who want to unplug at the reservoir, but it also means you need to plan your dump, fuel, and resupply timing in advance rather than looking things up on the fly once you are out on MT-314.

Summer, roughly late May through mid-September, when the park is in peak season, the dump station and water are operating, and the roads are reliably clear. Warm days and cool nights at elevation make for great camping, and the fishing is at its best. Spring can be muddy with snow possible into May, and fall is pleasant but the season and dump close around the third Sunday of September. Winter is out: the dump closes, temperatures can hit -20F, and the roads may be impassable. Aim squarely for the summer window for the smoothest trip.

BLM and national forest land in southeastern Montana may offer dispersed camping, but it is very remote and requires complete self-sufficiency, and it does not solve your dump problem since there is no free facility out here. The Tongue River Reservoir State Park dump at $5 is the only legitimate tank service in the area. If you do boondock nearby, plan to come into the park to dump and fill water during peak season, and understand that the combination of curvy roads, no services, and limited cell coverage makes solo self-sufficiency here more demanding than in most places.

The highest-rated station is Tongue River Reservoir State Park with a rating of 4.5/5 stars.

Yes — there are free RV waste disposal options available near Decker.