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View Fact Sheet

Navarro Watershed Road Sediment Reduction Project

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Proposal
Planning/Design
Implementation
Post-Implementation
Completed
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Contents

Project Overview

Basics

HEALTHY ECOSYSTEMS, HABITATS AND SPECIES
Conserve and Restore Salmonid Habitats and Ecosystems
Navarro Watershed Road Sediment Reduction Project

  • Address Climate Change and Extreme Event Effects, Impacts and Vulnerabilities
  • Conserve, Enhance and Restore Watersheds and Ecosystems that Support Biological Diversity
  • Ensure that Disadvantaged and Underrepresented Communities Benefit from Initiatives
  • Protect and Enhance Watersheds and Ecosystems that Provide Water Quality and Supply Benefits
  • Respect Local Autonomy and Local Knowledge in NCRP Planning and Implementation

NCRP IRWM Prop 50 R1 (SWRCB)
Completed
Water quality and salmonid habitat in Indian, North Fork Navarro and Rancheria Creek subwatersheds in the Navarro River basin have been severely impacted by excess sediment loading from upslope sources including erosion and sediment delivery associated with networks of unimproved, poorly drained forest/ranch roads. Short-term goals: reduce anthropogenic erosion and sediment delivery by implementing erosion control and prevention treatments on properties in the Indian Creek and upper Rancheria Creek basins. Long-term goal: contribute towards salmonid habitat improvement and to promote sediment and temperature TMDL goals in the Navarro watershed.

2006
2008
2009
5/23/2026

Project Attributes

General Information

Project Description Narrative (1,000 character limit)
Between September 2008 and October 2009, PWA supervised treatment of roads in the project area, as well as individual sites showing evidence for erosion and sediment delivery to watercourses in the Navarro River watershed. Of the 18.6 mi of roads treated, field evidence showed that approximately 9 mi of roads were “hydrologically connected,” i.e., delivering concentrated surface runoff to the stream system. Road segments were treated with road drainage treatments to disperse road surface runoff and diminish the persistent delivery of fine-grained, roadbed-derived sediment.
Solutions
Climate Action - Adaptation, Community Health and Safety - Community Infrastructure, Community Health and Safety - Fire-Safe Roads, Ecosystem Conservation and Restoration - Water

Spatial Information

Tribal Region
None
Project Size (Acres)
None

Location

To zoom, hold down Shift and drag a rectangle.

  • Not Tribally owned land as identified by federal BIA map layer

  • Mendocino

  • Severely Disadvantaged Community

  • Upper Navarro River (180101080408)

  • Big-Navarro-Garcia (18010108)

Organizations

Contract Manager
  • County of Humboldt
Funders
  • California State Water Resources Control Board
  • Matching Funds Organization
Project Sponsor
  • Mendocino County Resource Conservation District
Local and/or Political Support Land owners

Contacts

Cybelle Immitt - North Coast Resource Partnership (NCRP) (CImmitt@co.humboldt.ca.us)

Project Benefit Performance Measures

Expected Project Benefit Performance Measures

Agricultural heritage preservation Working land category: Ranching 1 count
Environmental justice and social equity - # of projects Activity focus: Infrastructure improvement 1 count
Jobs created or retained (FTE) 15
Water quality improved - sediment reduction 6,233 tons
Water quality/sediment reduction - Mi of Roads treated 18.5 miles

Reported Project Benefit Performance Measures

Agricultural heritage preservation
Working land category Total 2009 2008 Units
Ranching 1 1 N/A count
Total 1 1 0 count

Environmental justice and social equity - # of projects
Activity focus Total 2009 2008 Units
Infrastructure improvement 1 1 N/A count
Total 1 1 0 count

Jobs created or retained (FTE)
Total 2009 2008 Units
15 10 5 number
Total 15 10 5 number

Special status species protection
Protection status Total 2009 2008 Units
Federal endangered/ threatened fish 1 1 N/A count

Special status species protection - # of projects
Total 2009 2008 Units
1 N/A 1 count
Total 1 0 1 count

Water quality improved - # of projects
Project type Total 2009 2008 Units
Sediment reduction 1 N/A 1 count
Total 1 0 1 count

Water quality improved - sediment reduction
Total 2009 2008 Units
19,136 N/A 19,136 tons
Total 19,136 0 19,136 tons

Water quality/sediment reduction - Mi of Roads treated
Total 2009 2008 Units
18.6 18.6 N/A miles
Total 18.6 18.6 0 miles

Financials

Budget

$1,180,884.72
$1,180,884.72
$0.00
$0.00
Total
IRWM Prop 50 R1 (SWRCB) (Inactive) $673,633.00 $0.00 $673,633.00
Matching Funds (Matching Funds) $507,251.72 $0.00 $507,251.72
Total $1,180,884.72 $0.00 $1,180,884.72
Comment: None provided

Reported Expenditures

2006 2007 2008 2009 Total
IRWM Prop 50 R1 (SWRCB) (Inactive) $0.00 $0.00 $0.00 $673,633.00 $673,633.00
Matching Funds (Matching Funds) $0.00 $0.00 $0.00 $507,251.72 $507,251.72
Grand Total $0.00 $0.00 $0.00 $1,180,884.72 $1,180,884.72

Note: None provided

Project Types

Project Types

Repairing the roads improves transportation infrastructure for this disadvantaged area.
Sediment delivery reduction improves and restores salmonid habitat and overall watershed conditions.
Improving instream habitat and road infrastructure improves the watershed's climate resiliency. The improvements make the watershed and the infrastructure better able to withstand weather patterns associated with climate change.

Project Details

Attachments

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Notes

No Notes entered.

External Links

No External Links entered.

Photos

Photos

  •  

    Crossing upgraded with culvert and rock armor was placed around the inlet and outlet
(Timing: Unknown) (~2,139 KB)
Credit: Pacific Watershed Associates

    Crossing upgraded with culvert and rock armor was placed around the inlet and outlet
    (Timing: Unknown) (~2,139 KB)
  •  

    Crossing upgraded with culvert placed in the axis of the crossing at the base of fill
(Timing: Unknown) (~2,158 KB)
Credit: Pacific Watershed Associates

    Crossing upgraded with culvert placed in the axis of the crossing at the base of fill
    (Timing: Unknown) (~2,158 KB)
  •  

    Crossing upgraded with culvert set at the base of fill, a critical dip, and a single post trash rack at the inlet
(Timing: Unknown) (~2,202 KB)
Credit: Pacific Watershed Associates

    Crossing upgraded with culvert set at the base of fill, a critical dip, and a single post trash rack at the inlet
    (Timing: Unknown) (~2,202 KB)
  •  

    Crossing upgraded with culvert, a critical dip, and rock armor at the inlet and outlet to dissipate culvert outflow energy and prevent erosion of the inboard fill face
(Timing: Unknown) (~2,205 KB)
Credit: Pacific Watershed Associates

    Crossing upgraded with culvert, a critical dip, and rock armor at the inlet and outlet to dissipate culvert outflow energy and prevent erosion of the inboard fill face
    (Timing: Unknown) (~2,205 KB)

 

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