Area	South Fork
Topic	Habitat Typing: NF South Fork Noyo Embeddedness

 

Caption:  Gravel embeddedness is a measure of gravel quality at potential salmonid spawning sites taken ocularly during habitat typing surveys. Embeddedness is the degree to which substrate in pool tail crests are buried. Optimal spawning habitat according to CDFG (1998) is less than 25% embedded (see InfoLinks). The North Fork South Fork Noyo pool tail crests had optimal conditions of embeddedness at 25% of sites measured and moderate embeddedness at 32% of sites. The embeddedness values in this stream are lower than most other Noyo Basin tributaries. The latest version of the California Salmonid Habitat Restoration Manual (CDFG, 1998) added a fifth class for embeddedness which is simply unsuitable for spawning. This may be because the pool tail crest is bedrock, mud or unsuitable for any reason. The California Conservation Corp surveyed 44,729 feet or 8.5 miles of the NF South Fork Noyo in September-October 1996. Data supplied for use in KRIS by the California Department of Fish and Game, Sacramento, CA.

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