Opalazioko erreka

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Opalazioko erreka flows into La Nivelle - Urdazuri , which it joins at N 43° 18′ 58″, W 1° 32′ 5″ at OSM node n1706075988, and there 156 km of total upstream flows in. load it's distributaries

Opalazioko erreka has 1 tributaries.

• Armaiako erreka, which joins it at N 43° 18′ 48″, W 1° 30′ 23″ at OSM node n11338838581, and 6 km of total upstream flows in.
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