Norton Creek Bank Stabilization and Erosion Control Project

Summary

SCH Number
2011098349
Lead Agency
Planning and Research, Office of (Office of Planning and Research)
Document Title
Norton Creek Bank Stabilization and Erosion Control Project
Document Type
NOE - Notice of Exemption
Received

Document Description
About 399 linear feet of stream bank treatments are proposed. Assuming mean annual bank retreat rates of 0.05 ft per year, and multiplying by a bank height of 10 ft and a 400 ft length of treatment, the mean annual sediment savings can be estimated to be about 200 cubic feet (7.5 cubic yards). In some locations, it appears that bank retreat rates are likely to be greater, hence this estimate of savings in probably conservative. Treatment to stabilize banks include boulder rip-rap placement on the lower banks, lay back on three bank sections, bank reconstruciton at one location near the well, and one cross-channel grade control structure.

Contact Information
Adam McKannay
California Department of Fish and Game
7329 Silverado Trail
Napa, CA 94558

(707) 944-5534

Location

Cities
Healdsburg
Counties
Sonoma

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15304, Class 4
Reasons for Exemption
Minor alteration of land.
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