| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| John Day |
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| river, 281 mi (452 km) long, rising in several branches in the Strawberry Mts., NE Oreg., and flowing W, then N to the Columbia River. Unnavigable, the river is used to irrigate vegetable farms. Within the river valley is the John Day Fossil Beds National Monument, containing well-preserved fossils of plants and animals (see National Parks and Monuments, table). |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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