The Herrick Falls are a ways up the Herrick Creek. Herrick Creek is the major tributary of the McGregor and is similar in size to the McGregor at their confluence. It has a moderate gradient (2 m/km) from its mouth to Spakwaniko Creek. This reach has diverse habitats including high-quality holding pools. From Spakwaniko Creek up to and including the 18-meter Herrick Falls at km 45.5, the average gradient of Herrick Creek is 12 m/km. There is lower habitat diversity in this reach due to the preponderance of riffles. This reach would be the upstream migrational limit for Chinook salmon.
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