Powell Butte is an extinct cinder cone butte in Portland, Oregon, United States.
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Powell Butte is an extinct cinder cone butte in Portland, Oregon, United States.
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The region around Powell Butte has a cool climate, and the butte and its surroundings feature meadows, rivers, and mixed forests.
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Today two underground reservoirs at the Powell Butte each hold 50, 000, 000 US gallons of fresh water as a primary part of the public water system for Portland and much of the surrounding region.
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Powell Butte is a cinder cone butte and is part of the Plio-Pleistocene Boring Lava Field, a group of volcanic cones that got their name from the low, forested Boring Hills formation.
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Powell Butte is one of the smaller volcanic cones in the Boring Lava Field.
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Powell Butte is partially mantled by post hyaloclastite gravel from the Troutdale Formation, which is likely the result of redeposited soil after erosion.
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Climate at Powell Butte is cool, creating a short growing season environment.
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Powell Butte sits near Johnson Creek, a tributary of the Willamette River that sustains native salmon and rainbow trout.
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The Friends of Powell Butte is an organization formed in 1990, which is focused on protecting the resources of the nature park.
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