Ainsworth State Park
Open for the 2026 season. The campground operates mid-March through October 31. Water and restroom facilities may remain closed until later in March depending on weather conditions. Firewood restrictions in effect due to emerald ash borer quarantine; campers must purchase locally harvested or certified heat-treated firewood only.
Extreme Heat Warning issued June 12 at 10:36AM PDT until June 16 at 11:00PM PDT by NWS Portland OR
* WHAT...Dangerously hot conditions with temperatures of 95 to 99 degrees F expected. * WHERE...Portland Metro Lowlands, Western Columbia River Gorge, Portland West Hills and Chehalem Mountain, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...From 11 AM Sunday to 11 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Peak heating days will be Sunday and Monday with a slight cool down on Tuesday. Overnight temperatures will remain elevated Sunday night into Monday morning, and Monday night into Tuesday morning. Night time temperatures ranging from 63 to 67 degrees F will lead to poor overnight relief. There is currently a 15-30% chance that night time temperatures remain above 70 degrees F Sunday night into Monday morning, and less than a 10% chance Monday night into Tuesday morning. There is a 30-40% chance of high temperatures of 100 degrees F or more on Monday.
About
Ainsworth State Park sits within the Columbia River Gorge National Scenic Area, surrounded by towering basalt cliffs and lush forest. The campground serves as a base for exploring the western Gorge's waterfall corridor, with trailheads for Horsetail Falls and the Gorge 400 Trail located at day-use areas just west of the campground entrance. The Historic Columbia River Highway weaves through the park, offering scenic driving and cycling opportunities. The campground has 40 full-hookup sites split between two loops. Loop A features all pull-through sites ranging from 50 to 83 feet, while Loop B has a mix of pull-through and back-in sites from 36 to 55 feet. All RV sites include 50-amp electrical service, water, and sewer connections. Six walk-in tent sites with nearby parking and a hiker/biker camp area round out the overnight options. Two restroom buildings with showers serve the campground, and a dump station is available for a $10 fee. The park operates seasonally from mid-March through October 31. Reservations can be made up to six months in advance through Oregon State Parks. Firewood must be purchased locally or certified heat-treated due to emerald ash borer quarantine restrictions in Multnomah County.
Directions
Ainsworth State Park is located off the Historic Columbia River Highway, approximately 1/2 mile from I-84 at exit 35.
Nearby Campgrounds
Amenities
| Water | Yes |
| Fires Allowed | Yes |
| Toilets | Yes |
| Dump Station | Yes |
| Wifi | — |
| Pets Allowed | Yes |
| Showers | Yes |
| Electric Hookups | Yes |
| Water Hookups | Yes |
| Sewer Hookups | Yes |
| Camp Store | No |
| Price | $29 - $53 |
Vehicle
| Max RV Length | 83ft |
| Max Trailer Length | — |
| Big Rig Friendly | Yes |
| Pull Through Sites | Yes |
Contact
| Phone | +1 (503) 695-2261 |
Cell Service
| AT&T | None |
| Verizon | Yes |
| T-Mobile | None |
Availability
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