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. 2011 Feb 28;6(2):e17407. doi: 10.1371/journal.pone.0017407

Figure 2. Map illustrating the relationship between estuary, watershed, and catchment boundaries at the Siuslaw River in Oregon.

Figure 2

Catchments are made up of hydrologic unit code (HUC) 12 watersheds that are immediately adjacent to the estuary boundary.