Sandy River Delta

Known by locals as Thousand Acres, this park offers over 1,000 acres of meadows, wetlands, and woods at the confluence of the Sandy and Columbia Rivers, just a few miles east of Portland. Popular with dog owners, it is off-leash dog romping heaven! Head to the river to let your pup swim along the sandy beaches of the delta.

This site is available for adoption through Columbia Riverkeeper's Adopt-a-River Program. It is not currently monitored for E.coli.

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Water Quality

No data available
Current Status
This status is based on the latest sample. Columbia Riverkeeper updates the status of this beach as soon as test results become available.

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Monitoring Frequency

Source Information

There is currently very limited water quality monitoring of Oregon's inland swim beaches. The federal Beach Act does not cover freshwater or riverine beaches, and the state of Oregon does not monitor swim beaches or recreation sites on the Columbia. Columbia Riverkeeper monitors recreation sites in the Columbia River Gorge through their Volunteer Water Quality Monitoring Program. Most sites are sampled monthly and high priority sites are sampled weekly from June-September.The Swim Guide's safety ratings are based solely on E.coli levels. While E.coli concentration is a useful indicator of fecal contamination, there are many other potential sources of pollution that are not reflected in the Swim Guide. These include other bacteria, heavy metals, pharmaceuticals, and pesticides that may harm aquatic life. On the Columbia and other salmon rivers, high temperatures threaten fish that need cold water. If you are interested in getting involved or learning more about the Columbia River, visit www.columbiariverkeeper.org.

Water Quality Graph