Thompson's Mills State Heritage Site is a state park near Shedd in Linn County, Oregon, United States, administered by the Oregon Parks and Recreation Department. The mill was first built in 1858. It burned down in 1862, but was rebuilt right away and those 12 inch by 12 inch hand hewn beams cut and placed while Lincoln was in office are still visible inside the mill today . A series of dedicated and tenacious owners adapted the mill to changing times turning the flour mill to a feed mill and eventually a hydroelectric plant operating until 2004, making it one of Oregon's oldest continuously operating water-powered businesses. Oregon State Parks purchased the property in 2004 and the park was opened to the public in December, 2007. Free guided tours are offered daily allowing visitors to see the water powered turbines and machinery in action. The grounds are being restored to the 1910-1930's era with the heirloom orchard, gardens and plantings restored as well as heritage poultry roaming the grounds. (<a href="https://oregonstateparks.org/index.cfm?do=parkPage.dsp_parkPage&parkId=186" rel="noreferrer nofollow">oregonstateparks.org/index.cfm?do=parkPage.dsp_parkPage&a...</a>)
Thompson's Mills State Heritage Site is a state park near Shedd in Linn County, Oregon, United States, administered by the Oregon Parks and Recreation Department. The mill was first built in 1858. It burned down in 1862, but was rebuilt right away and those 12 inch by 12 inch hand hewn beams cut and placed while Lincoln was in office are still visible inside the mill today . A series of dedicated and tenacious owners adapted the mill to changing times turning the flour mill to a feed mill and eventually a hydroelectric plant operating until 2004, making it one of Oregon's oldest continuously operating water-powered businesses. Oregon State Parks purchased the property in 2004 and the park was opened to the public in December, 2007. Free guided tours are offered daily allowing visitors to see the water powered turbines and machinery in action. The grounds are being restored to the 1910-1930's era with the heirloom orchard, gardens and plantings restored as well as heritage poultry roaming the grounds. (<a href="https://oregonstateparks.org/index.cfm?do=parkPage.dsp_parkPage&parkId=186" rel="noreferrer nofollow">oregonstateparks.org/index.cfm?do=parkPage.dsp_parkPage&a...</a>) Rick Obst · CC BY 2.0

Thompson's Mills State Heritage Site

State Historic Site · Oregon · Oregon Parks and Recreation Department

Thompson's Mills is a unique survivor of times past, chronicling 160 years of Oregon rural life and honoring the owners who continually adapted the mill to the changing world around it. It is the oldest standing water-powered grain mill in Oregon, and its turbines can be seen in action on guided tours. A water right that predates statehood produces the water flow that still runs the milling machines for demonstrations today. The park is open daily except Thanksgiving and Christmas day. Mill Tours Self-guided mill tours daily 9 a.m.-4 p.m. Guided tours Monday-Thursday at 11 a.m, 1 p.m., 2 p.m.

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Official site
stateparks.oregon.gov
Managed by
Oregon Parks and Recreation Department

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Activities & features: Interpretive Signage · Scenic Overlook

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Sources: Wikimedia Commons / editorial, State agency · updated 2026-08-23