Waldo Hills

---

title: "Waldo Hills" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["hills-of-oregon", "landforms-of-marion-county,-oregon"] description: "Range of hills in the Willamette Valley, Oregon, U.S." topic_path: "general/hills-of-oregon" source: "https://en.wikipedia.org/wiki/Waldo_Hills" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Range of hills in the Willamette Valley, Oregon, U.S. ::

The Waldo Hills are a range of hills in the Willamette Valley of Oregon, United States. Encompassing an area of around 50 sqmi, the hills are located east of Salem. The hills are named after pioneer Daniel Waldo.

Geology

The hills stretch out from Mill Creek in a northeasterly direction. Rocks of the hills include Tertiary volcanic bedrock, sedimentary bedrock, and Plio-Pleistocene sedimentary basin fill shaped by elongate domical folds. The Waldo Hills form part of the divider between the upper and lower Willamette Valley. Additionally, the Waldo Hills as part of a larger fault system of low-lying hills in the mid-valley, are the largest geological structure in the mid-Willamette Valley. Along with the Silverton Hills, these hills form the foothills to the Cascade Mountains to the east.

Settlement

Euro-American settlement of the Waldo Hills began in 1843 when Daniel Waldo settled a land claim there and began farming. Later settlers included Homer Davenport and Samuel L. Simpson, along with Waldo's sons John and William. In 1846, the hills were the site of the formation and drilling of the Oregon Rangers, a militia formed by the Provisional Government of Oregon.

References

References

1. Corning, Howard M. ''Dictionary of Oregon History''. Binfords & Mort Publishing, 1956.
2. link. (2016-03-07 Geological Society of America, Accessed September 10, 2007.)
3. Terry L. Tolan and Marvin H. Beeson. [https://wrgis.wr.usgs.gov/open-file/of99-141/geol.ps Geologic Map of the Scotts Mills, Silverton, and Stayton Northeast 7.5 Minute Quadrangles, Oregon.] {{webarchive. link. (2013-02-17 United States Geological Survey, 1999.)
4. Brown, J. Henry (1892). Political History of Oregon: Provisional Government. The Lewis & Dryden Printing Co.: Portland.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::