South Fork Umatilla River

South Fork Umatilla River is 15 km long, and has a stream level of 2.

Map of South Fork Umatilla River

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Distributaries / Outflows

South Fork Umatilla River flows into Umatilla River , which it joins at N 45° 43′ 32″, W 118° 11′ 19″ at OSM node n9330840421, and there 105 km of total upstream flows in.

Tributaries

South Fork Umatilla River has 3 tributaries.

Thomas Creek, which joins it at N 45° 41′ 16″, W 118° 12′ 16″ at OSM node n9330835478, and 21 km of total upstream flows in.

Buck Creek, which joins it at N 45° 43′ 7″, W 118° 11′ 18″ at OSM node n9330846124, and 18 km of total upstream flows in.

Shimmiehorn Creek, which joins it at N 45° 40′ 31″, W 118° 13′ 7″ at OSM node n9330838818, and 7 km of total upstream flows in.