Mattole Ranchland Sediment Reduction Special Permit

3 Documents in Project


SCH Number
Lead Agency
Humboldt County
Document Title
Mattole Ranchland Sediment Reduction Special Permit
Document Type
NEG - Negative Declaration

Document Description
A Special Permit to allow various stream restoration & sediment control projects within the Mattole River watershed. The project area spans multiple parcels. Work will be conducted by the Mattole Restoration Council in cooperation with the DFG, Regional Water Board, DWR, Natural Resource Conservation Service, and a number of private landowners. The majority of the project activities fall within two categories: "Road related treatments (to Cartwright Road and Schmidt/Etter Ranch Road)" and "Instream treatments (along the Toews, Etter, Schmidt, and Scarpulla lands)". The following road surface treatments are proposed along three miles of road: rolling dips, berm removal, crowning, and out-sloping to reduce runoff concentration on the road surface. "Shotgun" or failed culverts will be replaced at approximately 20 sites with riprap rock armoring being placed around the outlet of an additional 10 culverts. Armored fords will be installed at 10 sites to upgrade fill-based crossings on class II streams. One double span flatcar bridge (approximately 175 feet long) is proposed to be installed across a portion of the Upper North Fork of the Mattole River. "Instream" treatments include: construction of willow baffles in association with bioengineered rip rap to provide streambank erosion protection, placement of bioengineered rip rap rock with a toe trench, and installation of large woody debris to improve fish habitat.

Contact Information
Steven Lazar
Humboldt County
3015 H Street
Eureka, CA 95501

707 268 3741


Cross Streets
The project is located in Humboldt County, at multiple locations in the Honeydew/Mattole area
Total Acres
Parcel #
107-044-01, 107-061-02, 107-062-03, 107-062-04, 107-084-01, 107-291-04, 107-291-07, 107-291-08,
Honeydew ES
Main Stem & North Fork of the Mattole River
Other Location Info
City/Nearest Community: Honeydew area
Other Information
Parcel Cont: 107-291-10, 107-291-11, 107-291-12, 107-291-18; 19

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Watershed Enhancement & Protection)
Local Action
Other Action Other Action: Special Permit
Project Issues
Wetland/Riparian Water Quality Vegetation Geologic/Seismic Flood Plain/Flooding Drainage/Absorption
Reviewing Agencies
Cal Fire California Department of Parks and Recreation California Department of Public Health Caltrans, District 1 Department of Conservation Department of Fish and Wildlife, Region 1E Department of Water Resources Native American Heritage Commission Office of Emergency Services, California Regional Water Quality Control Board, Region 1 Resources Agency State Lands Commission State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights
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