Assertion details
Summary
river's headwater be 1 in santa susana mountains
1 triples in cluster
headwater be in santa susana mountains 1
1 source sentences
Source: Shown
Subject: Shown
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  • SRC Its headwaters are in the Simi Hills and Santa Susana Mountains , and it flows nearly 51 miles ( 82 km ) from Canoga Park through the San Fernando Valley , Downtown Los Angeles , and the Gateway Cities to its mouth in Long Beach .