Sandy River Delta, Thousand Acres Park

Portland Metro Area, Oregon

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Sandy River Delta, Thousand Acres Park

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  • Sandy River Delta, Thousand Acre Park vault toilet facility.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park information kiosk.- Sandy River Delta, Thousand Acres Park
  • View of Mount Hood (11,249 ft) from the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • The Boundary Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • The Boundary Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • The Boundary Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • The Boundary Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • American goldfinch (Carduelis tristis) in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Ranch Dike Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Ranch Dike Trail in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Black cottonwoods (Populus trichocarpa) in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Black cottonwoods (Populus trichocarpa) in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
  • Reed canary grass (Phalaris arundinacea) in the Sandy River Delta, Thousand Acre Park.- Sandy River Delta, Thousand Acres Park
Overview + Weather
Pros: 
Largest off-leash park in the Portland metro area. Open to mountain biking and horseback riding.
Cons: 
Not recommended if you don't like dogs.
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Region:
Portland Metro Area, OR
Congestion: 
High
Preferable Season(s):
Winter, Spring, Summer, Fall
Day-Use/Parking Pass Required:
Not Required
Picnic Tables: 
No
Area: 
1,400.00 acres (566.56 hectares)
Dogs allowed: 
Yes
Current Local Weather:
Powered by Dark Sky

Today

Dry throughout the day.
90°F
58°

Sat

Dry throughout the day.
97°F
68°

Sun

Dry throughout the day and partly cloudy starting in the evening.
99°F
74°

Mon

Clear throughout the day.
85°F
63°

Tue

Partly cloudy until afternoon.
77°F
53°

Wed

Mostly cloudy until evening.
76°F
49°

Thu

Partly cloudy until evening.
84°F
49°
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Adventure Description

Adventure Description

Team

Sandy River Delta Park, better known by locals as Thousand Acres, is the off-leash mecca of Portland. With 1,400 acres of open field, wetlands, blackberry bushes, countless trails, and two rivers where your dog can play fetch, splash around, and run free, this is a dog's paradise.

That being said, the Sandy River Delta isn't exclusively a dog park. In fact, this piece of property sandwiched between the Sandy River, Columbia River, and Interstate 84 is open to mountain biking and horseback riding. The area is also popular with birders (there is a bird blind) and waterfowl hunters, and it is even a great place to lay out a towel for a swim in the Columbia. Further, about a third of the park has been set aside to protect wildlife habitat and is completely off limits to any human or canine activity.

A part of the Columbia River Gorge National Scenic Area now under management by the U.S. Forest Service, the park was once the site of an aluminum factory, and it was more recently used for grazing cattle. Once under jurisdiction of the Forest Service, the main task at hand has been to restore the property to its native estuary wetland ecosystem, which means removing invasive species such as Himalayan blackberry and reed canary grass, while at the same time maintaining the off-leash regulations.

Note: Dogs are required to be leashed in the parking lot and on and within 100 feet of the Confluence Trail. The park is open from dawn until dusk.

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Updates, Tips + Comments

Field Guide + Map

Field Guide + Map

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Location + Directions

Location + Directions

Nearby Camping + Lodging

(26 within a 30 mile radius)

Nearby Adventures

(157 within a 30 mile radius)

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