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.
Heat Advisory issued July 22 at 11:56AM PDT until July 22 at 11:00PM PDT by NWS Portland OR
* WHAT...Temperatures as high as 95 to 100 degrees. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge and the Hood River Valley, Lower Columbia River and Cowlitz River Valleys, Central Willamette Valley, and South Washington Cascade Foothills. * WHEN...Until 11 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Smoke from fires outside of the region or clouds moving into the area could result in cooler daytime high temperatures than currently forecast. There is around a 15-25% chance of thunderstorms on Wednesday afternoon which may increase cloud cover and thus cause temperatures to be slightly lower than forecast.
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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