John Day

John Day, 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 as well as the striking Painted Hills and the cliffs of the Clarno Palisades (see National Parks and Monuments, tablenational parks and monuments, table).

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