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RV Dump Stations In Moses Lake, Washington

47.1301° N, 119.2781° W

Quick Overview

Moses Lake sits right along I-90 in the heart of Washington’s Columbia Basin, and its position roughly halfway between Seattle and Spokane makes it a natural stop for RVers servicing their rig mid-trip. We track several dump stations in and around town, a portion of them free and a portion paid, a good spread for an agricultural and recreation hub that sees steady interstate traffic all year long, from farm equipment to fishing boats to travel trailers.

The lineup mixes a city-run option with private resorts and a nearby state park. Cascade Campground, run by the City of Moses Lake, sits right on the lake with a boat launch and swim area alongside its dump station. Private resorts like Desert Oasis RV and Suncrest Resort keep their dump facilities open year round, and Potholes State Park about 17 miles southwest offers a cheap non-camper option with a genuinely nice reservoir setting. Truck stops along I-90, including a travel center right in town, round things out for travelers who just need a quick stop.

Weather shapes the rhythm here more than crowding does. Summer brings hot, dry days in the upper 80s and 90s with strong winds sweeping across the open basin terrain, and the lake and reservoirs pull in the heaviest recreational traffic of the year. Winter is colder with occasional snow and fog, and while some seasonal campgrounds close, the year-round resorts and the state park keep running. Time your stop around the season and the day of the week and you will get through Moses Lake without any hassle.

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Traveling to Moses Lake by RV

I-90 runs directly through Moses Lake, connecting west to Seattle and east to Spokane, and it is a wide, easy interstate with no unusual restrictions for RVs. SR-17 branches north toward Grand Coulee across open, windy stretches of the Columbia Basin, so keep a firm grip on the wheel in a high-profile rig, and SR-171 heads southwest toward Potholes State Park.

Truck stops and travel centers along the I-90 commercial corridor through town make Moses Lake an easy service stop, combining fuel, propane, and a dump station in one visit. If your route continues toward Washington State Parks destinations like Sun Lakes-Dry Falls or Ginkgo Petrified Forest, both are within about 35 miles, so plan to top off here before heading out into the more remote stretches of the basin.

Before You Go: RV Trip Essentials

Dump stations are only one piece of the trip puzzle. Before you set out for your trip to Moses Lake, Washington, it's worth taking thirty minutes to check that the basics are in place — the four areas below are where unprepared RVers most often get stung.

Check your RV insurance coverage

A standard auto policy rarely covers a Class A, Class C, or travel trailer the way a dedicated RV insurance policy does. If you're financing a motorhome, lenders typically require comprehensive and collision; full-timers should additionally price in vacation liability and personal belongings coverage. Rates vary widely by state and travel pattern — compare quotes from multiple RV-focused carriers before each season.

Know your roadside assistance options

RV-specific roadside plans tow motorhomes and trailers that regular AAA coverage won't touch — flat beds, mobile mechanics, tire service for duallies, and even emergency lockouts at remote campgrounds. Good plans cover your spouse and trailer even if you're driving a separate vehicle, and some include trip interruption reimbursement if a breakdown costs you a reservation.

Decide about an extended warranty early

Original manufacturer warranties on new RVs typically run 12–24 months — shorter than most buyers realize. An extended service contract (essentially a mechanical breakdown policy) covers the appliances, slides, levelling systems, and drivetrain components that can run $3,000–$10,000 to replace. The time to price one is before the factory coverage expires, not after something breaks.

Set up a travel rewards card for fuel and fees

A no-annual-fee travel or gas rewards card pays for itself on a single month of RV travel. Expect to spend $400–$800 per week combined on fuel, campgrounds, and propane — 3–5% cash back on gas alone covers the next oil change. For bigger trips, a sign-up bonus can offset campground fees for the whole season.

RVingLife is supported by advertising. Third-party ads on this page may include insurance quotes, roadside plans, warranty coverage, or financial products relevant to the topics above. We don't endorse any specific provider — compare multiple offers before you commit. Privacy policy.

Dump Station Costs in Moses Lake

Dumping around Moses Lake is inexpensive. Potholes State Park charges just $5 for non-registered visitors and nothing extra if you are camping there. Private resorts like Desert Oasis RV and Suncrest Resort generally include the dump in your nightly site fee, so there is no separate charge if you are already staying. Truck stops and travel centers along I-90 typically run $10 or less for a one-time dump if you are just passing through.

If you know you will need to dump and you are not already staying anywhere, the state park’s low non-camper fee is the best standalone value, and it comes with a nice reservoir setting for fishing and boating. Otherwise, booking a night at one of the private resorts or Cascade Campground effectively folds the dump cost into a reasonable nightly rate.

Free: 8 stations (67%)
Paid: 4 stations (33%)

Contact station for pricing details.

Prices may vary. Always confirm with the station before visiting.

What RVers Are Saying About Moses Lake

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Best Time to Visit Moses Lake by RV

❄️

Winter

Nov - Feb

24F - 36F

Crowds: Low

Cold with occasional snow and fog; most seasonal campgrounds close, but the year-round private resorts keep their dump stations open.

🌸

Spring

Mar - May

38F - 65F

Crowds: Medium

Mild and breezy shoulder season; dump stations are open and rarely busy before the summer rush arrives.

☀️

Summer

Jun - Aug

58F - 88F

Crowds: High

The lake and reservoirs draw the biggest crowds of the year, and popular stations can have a short wait on weekend mornings.

🍂

Fall

Sep - Oct

40F - 68F

Crowds: Medium

Comfortable weather and waterfowl season bring a steady but manageable crowd through the private and public dump stations.

Explore the Moses Lake Area

Book Cascade Campground through the city’s Active Communities portal well ahead of summer weekends, since lakefront sites go fast once the weather turns warm. If you can dump midweek, do it, because the busiest private resorts see a bit more activity around their stations on weekend checkout mornings during peak summer.

Carry a Washington Discover Pass if you plan to camp or dump at Potholes State Park or other nearby state land, since it is required at nearly all state-managed recreation areas in Washington. Expect strong winds across the open Columbia Basin terrain, which can push around high-profile rigs on I-90 and SR-17, so keep an eye on gusty conditions when towing. Finally, top off water and propane while you are here if you are continuing east toward Spokane or west over the Cascades, since services along some interstate stretches through the basin are more spread out than you might expect.

National Parks Nearby

Frequently Asked Questions About Dump Stations in Moses Lake

Where can I dump my RV tanks near Moses Lake?

You have good options along the I-90 corridor here. We track several dump stations in and around Moses Lake, including the city-run Cascade Campground right on the lake, private resorts like Desert Oasis RV and Suncrest Resort, and Potholes State Park about 17 miles southwest. Truck stops along I-90, including a Love’s Travel Stop, also offer dump access for travelers passing through the Columbia Basin. Between the city, the private parks, and the state park, you are rarely far from a place to empty your gray and black tanks.

How much does it cost to dump at a station near Moses Lake?

Costs are modest across the board. Potholes State Park charges $5 for visitors who are not registered campers there and nothing extra if you are staying on site. Private resorts like Desert Oasis and Suncrest generally bundle the dump into your nightly site fee, so it costs nothing beyond your stay. Truck stops and travel centers along I-90 typically charge $10 or less for a one-time dump if you are just passing through without a campground stay planned. Given how reasonable these rates are compared to other parts of the state, most RVers do not think twice about which station to use, they just pick whichever is closest to their route that day.

Are there free dump stations around Moses Lake?

Some, yes. Of the several stations we track, some are free, mostly for registered campers at Potholes State Park and the private resorts where the dump is included in your site fee. If you are not staying anywhere overnight, the state park’s $5 non-camper fee is about as cheap as it gets, and it comes with access to a genuinely nice reservoir setting for fishing and boating while you are there. Truck stops along I-90 occasionally waive their small dump fee if you fill up on fuel at the same stop, so it is always worth asking at the counter before paying separately.

Can I dump my RV tanks in winter near Moses Lake?

Winter here is manageable compared to mountain destinations. Cold temperatures and occasional snow or fog settle over the Columbia Basin, and some seasonal campgrounds close for the season, but the year-round private resorts like Desert Oasis RV and Suncrest Resort keep operating and keep their dump stations open. Potholes State Park also stays open all year. Call ahead if you are relying on a specific station in the coldest stretch of winter, just to confirm it has not been temporarily shut down for freeze protection.

Do I need a reservation to use a dump station?

No, dump stations do not require a reservation, you simply pull up, pay any posted fee, and empty your tanks. The one place reservations matter is if you want to camp overnight at Cascade Campground, which the City of Moses Lake books through its Active Communities portal or by phone. If you just need to dump at a private resort without staying, a quick call ahead confirms hours and fees, especially during the busy summer season when lake traffic is heaviest.

What is the best route to reach dump stations in Moses Lake?

I-90 runs directly through Moses Lake and connects west to Seattle and east to Spokane, making it the easiest way to reach the truck stops and private resorts along the commercial corridor through town. SR-17 heads north toward Grand Coulee and passes open, windy stretches of the Columbia Basin, so keep that in mind if you are towing a tall trailer. SR-171 is your route toward Potholes State Park southwest of town. All of these roads handle RVs without unusual restrictions, so plan your stop based on which dump station fits your route best.

Are the dump stations near Moses Lake big-rig friendly?

Yes, most of them are. Desert Oasis RV and Suncrest Resort both advertise pull-throughs built for big rigs alongside their full-hookup sites, and the truck stops along I-90 are naturally set up to handle large vehicles since they serve commercial trucks too. Cascade Campground and Potholes State Park have more standard site layouts, so a very long rig should call ahead to confirm turning room, but in general the Moses Lake area is an easy place to bring a large motorhome or fifth wheel.

Can I get potable water when I dump near Moses Lake?

Yes, Cascade Campground, Potholes State Park, and the private RV resorts all pair a dump station with potable water access, so you can empty your tanks and refill drinking water at the same stop. Keep a dedicated fresh water hose separate from anything you use to rinse the dump connection. Given the hot, dry Columbia Basin summers, you will want to top off water often, since you go through it faster here than in cooler, wetter parts of the state.

Where can I find propane near Moses Lake?

Propane is easy to find along the I-90 commercial corridor through town. Amerigas has a location in Moses Lake, and multiple fuel stops along the interstate carry propane as well, often alongside RV supplies. If you are heading north on SR-17 toward Grand Coulee or into more rural parts of the Columbia Basin afterward, fill your bottles and tanks here first, since services get noticeably sparser once you leave the I-90 corridor behind. Weekend mornings in summer can bring a short wait at the busier stations, so an early stop before the day heats up tends to be the smoothest option.

Is overnight RV parking allowed in Moses Lake?

Yes, in a few forms. Truck stops and travel centers along I-90 generally allow overnight parking for travelers passing through, and the Grant County Fairgrounds hosts RVs during non-event periods with 200 pull-through, full-hookup sites. For an actual campground stay, Cascade Campground is the city-run option right on the lake, bookable through the Active Communities portal. Between these, Moses Lake gives road-tripping RVers a genuinely easy overnight stop along the I-90 corridor, whether you need a quick truck-stop nap or a proper full-hookup site for a few nights on the water.

How many dump stations are near Moses Lake?

We track several dump stations in and around Moses Lake, a solid number for a Columbia Basin travel hub along I-90. That includes the city campground, several private resorts, the nearby state park, and truck stops along the interstate. Having that spread of options matters most in the height of summer, when the lake and reservoirs pull in heavy recreational traffic and the busiest private resorts can see more activity around their dump stations on weekend mornings. It also means you have a fallback if your first choice is closed for maintenance or full for the night, which happens more often during peak boating season than you might expect.

What should I do with my tanks before leaving the Moses Lake area?

If you are continuing east toward Spokane or west back over the Cascades on I-90, dump and refill here before you go, since services along some stretches of the interstate through the Columbia Basin are more spread out than you might expect. Empty both tanks completely, add tank treatment, and top off fresh water and propane while you have easy access to multiple stations. Moses Lake’s position right on I-90 makes it a natural service stop whether you are heading toward the mountains or across the open basin.

Are dump stations near Moses Lake open to non-campers?

Yes, generally. Potholes State Park charges a modest $5 fee for non-registered visitors to use its dump station, and several private resorts allow non-guest dumping for a small fee, though it is worth a quick call ahead to confirm hours. The truck stops and travel centers along I-90 are the most straightforward option if you just need to dump without any advance arrangement, since they serve a steady stream of travelers and do not require you to be a campground guest.

Where can I dump my RV tanks near Moses Lake?

You have good options along the I-90 corridor here. We track {{stationCount}} dump stations in and around Moses Lake, including the city-run Cascade Campground right on the lake, private resorts like Desert Oasis RV and Suncrest Resort, and Potholes State Park about 17 miles southwest. Truck stops along I-90, including a Love’s Travel Stop, also offer dump access for travelers passing through the Columbia Basin. Between the city, the private parks, and the state park, you are rarely far from a place to empty your gray and black tanks.

How much does it cost to dump at a station near Moses Lake?

Costs are modest across the board. Potholes State Park charges $5 for visitors who are not registered campers there and nothing extra if you are staying on site. Private resorts like Desert Oasis and Suncrest generally bundle the dump into your nightly site fee, so it costs nothing beyond your stay. Truck stops and travel centers along I-90 typically charge $10 or less for a one-time dump if you are just passing through without a campground stay planned. Given how reasonable these rates are compared to other parts of the state, most RVers do not think twice about which station to use, they just pick whichever is closest to their route that day.

Are there free dump stations around Moses Lake?

Some, yes. Of the {{stationCount}} stations we track, {{freeCount}} are free, mostly for registered campers at Potholes State Park and the private resorts where the dump is included in your site fee. If you are not staying anywhere overnight, the state park’s $5 non-camper fee is about as cheap as it gets, and it comes with access to a genuinely nice reservoir setting for fishing and boating while you are there. Truck stops along I-90 occasionally waive their small dump fee if you fill up on fuel at the same stop, so it is always worth asking at the counter before paying separately.

Can I dump my RV tanks in winter near Moses Lake?

Winter here is manageable compared to mountain destinations. Cold temperatures and occasional snow or fog settle over the Columbia Basin, and some seasonal campgrounds close for the season, but the year-round private resorts like Desert Oasis RV and Suncrest Resort keep operating and keep their dump stations open. Potholes State Park also stays open all year. Call ahead if you are relying on a specific station in the coldest stretch of winter, just to confirm it has not been temporarily shut down for freeze protection.

Do I need a reservation to use a dump station?

No, dump stations do not require a reservation, you simply pull up, pay any posted fee, and empty your tanks. The one place reservations matter is if you want to camp overnight at Cascade Campground, which the City of Moses Lake books through its Active Communities portal or by phone. If you just need to dump at a private resort without staying, a quick call ahead confirms hours and fees, especially during the busy summer season when lake traffic is heaviest.

What is the best route to reach dump stations in Moses Lake?

I-90 runs directly through Moses Lake and connects west to Seattle and east to Spokane, making it the easiest way to reach the truck stops and private resorts along the commercial corridor through town. SR-17 heads north toward Grand Coulee and passes open, windy stretches of the Columbia Basin, so keep that in mind if you are towing a tall trailer. SR-171 is your route toward Potholes State Park southwest of town. All of these roads handle RVs without unusual restrictions, so plan your stop based on which dump station fits your route best.

Are the dump stations near Moses Lake big-rig friendly?

Yes, most of them are. Desert Oasis RV and Suncrest Resort both advertise pull-throughs built for big rigs alongside their full-hookup sites, and the truck stops along I-90 are naturally set up to handle large vehicles since they serve commercial trucks too. Cascade Campground and Potholes State Park have more standard site layouts, so a very long rig should call ahead to confirm turning room, but in general the Moses Lake area is an easy place to bring a large motorhome or fifth wheel.

Can I get potable water when I dump near Moses Lake?

Yes, Cascade Campground, Potholes State Park, and the private RV resorts all pair a dump station with potable water access, so you can empty your tanks and refill drinking water at the same stop. Keep a dedicated fresh water hose separate from anything you use to rinse the dump connection. Given the hot, dry Columbia Basin summers, you will want to top off water often, since you go through it faster here than in cooler, wetter parts of the state.

Where can I find propane near Moses Lake?

Propane is easy to find along the I-90 commercial corridor through town. Amerigas has a location in Moses Lake, and multiple fuel stops along the interstate carry propane as well, often alongside RV supplies. If you are heading north on SR-17 toward Grand Coulee or into more rural parts of the Columbia Basin afterward, fill your bottles and tanks here first, since services get noticeably sparser once you leave the I-90 corridor behind. Weekend mornings in summer can bring a short wait at the busier stations, so an early stop before the day heats up tends to be the smoothest option.

Is overnight RV parking allowed in Moses Lake?

Yes, in a few forms. Truck stops and travel centers along I-90 generally allow overnight parking for travelers passing through, and the Grant County Fairgrounds hosts RVs during non-event periods with 200 pull-through, full-hookup sites. For an actual campground stay, Cascade Campground is the city-run option right on the lake, bookable through the Active Communities portal. Between these, Moses Lake gives road-tripping RVers a genuinely easy overnight stop along the I-90 corridor, whether you need a quick truck-stop nap or a proper full-hookup site for a few nights on the water.

How many dump stations are near Moses Lake?

We track {{stationCount}} dump stations in and around Moses Lake, a solid number for a Columbia Basin travel hub along I-90. That includes the city campground, several private resorts, the nearby state park, and truck stops along the interstate. Having that spread of options matters most in the height of summer, when the lake and reservoirs pull in heavy recreational traffic and the busiest private resorts can see more activity around their dump stations on weekend mornings. It also means you have a fallback if your first choice is closed for maintenance or full for the night, which happens more often during peak boating season than you might expect.

What should I do with my tanks before leaving the Moses Lake area?

If you are continuing east toward Spokane or west back over the Cascades on I-90, dump and refill here before you go, since services along some stretches of the interstate through the Columbia Basin are more spread out than you might expect. Empty both tanks completely, add tank treatment, and top off fresh water and propane while you have easy access to multiple stations. Moses Lake’s position right on I-90 makes it a natural service stop whether you are heading toward the mountains or across the open basin.

Are dump stations near Moses Lake open to non-campers?

Yes, generally. Potholes State Park charges a modest $5 fee for non-registered visitors to use its dump station, and several private resorts allow non-guest dumping for a small fee, though it is worth a quick call ahead to confirm hours. The truck stops and travel centers along I-90 are the most straightforward option if you just need to dump without any advance arrangement, since they serve a steady stream of travelers and do not require you to be a campground guest.

Are there free dump stations in Moses Lake?

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