Constructed in 1912-1913, the 47-foot-tall concrete dam served to divert water from the Sandy River into the Little Sandy River. In 2007, after decades of increasing maintenance costs and concerns about environmental impact, the dam was decommissioned and removed. This marked the largest dam removal project in Oregon's history and the tallest dam removed in the Northwest in 40 years.

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Best routes to Marmot Diversion Dam

1. Marmot Diversion Dam Trail — Marmot Recreation Site

1.95km

00:31

20m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Elevation 220 m

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Friday 6 February

16°C

3°C

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Max wind speed: 6.0 km/h

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Location: Clackamas County, Oregon, United States

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Marmot Diversion Dam

1. Marmot Diversion Dam Trail — Marmot Recreation Site

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