Gualala River Sediment Total Maximum Daily Load (TMDL)

Announcements

A public Board Meeting is scheduled for February 18 – 19, 2026 to consider the adoption of the Action Plan for the Gualala River Sediment Total Maximum Daily Load. Relevant details and supporting documents will be made available on the February 18 –19 Board Meeting agenda webpage under Agenda Item 6.

Follow this link to view the official Notice of Public Comment Opportunity, Board Workshop, and Public Hearing to Consider Adoption of a Basin Plan Amendment Regarding the Action Plan for the Gualala River Sediment Total Maximum Daily Load (TMDL).

Public Review Draft Documents

 

Quarterly Project Status Updates

California Environmental Quality Act (CEQA) Documentation

The North Coast Water Board hosted two public California Environmental Quality Act (CEQA) scoping meetings for the Gualala River TMDL Action Plan. The first meeting was online on Monday June 3, 2024, and the second meeting was in-person on Wednesday June 5, 2024. The public comment period for comments related to CEQA closed on July 8, 2024.

Presentation slides from these meetings can be found at the following link:
CEQA Scoping Public Meeting Presentation

Additional meeting information can be found in the Meeting Notice linked below:
Gualala River Sediment TMDL Action Plan CEQA Scoping Meeting Notice

An initial draft CEQA checklist has been prepared (linked below) which includes project background information, the proposed project description, potential reasonably foreseeable compliance measures, and an initial draft of potential environmental impacts (checklist). This list may be updated considering public comments received during CEQA Scoping:
Gualala River Sediment TMDL CEQA Draft Environmental Checklist

Gualala River TMDL Overview

The Gualala River is included on the Clean Water Act 303(d) list for impairments associated with excessive sediment and high temperatures. A TMDL addressing sediment impairments was established by the U.S. Environmental Protection Agency (USEPA) in December 2001. The Regional Water Board prepared a Technical Support Document (TSD) that addressed sources of sediment and temperature impairments, loading capacities, and load allocations necessary to restore sediment and temperature conditions supportive of beneficial uses related to the cold water fishery in the Gualala River Watershed. The TSD served as the basis for the USEPA's TMDLs.

The Gualala River Sediment TMDL was included in Resolution R1-2004-0087, Total Maximum Daily Load Implementation Policy for Sediment Impaired Receiving Waters in the North Coast Region, adopted by the North Coast Regional Water Quality Control Board in November 2004. The text of the resolution may be viewed by clicking here.

Regional Water Board staff are currently developing an action plan to address continuing water quality impairments in the Gualala River watershed. The goal of this action plan is to improve the quality of waters in the Gualala River watershed so that water quality standards are attained and beneficial uses of those waters are fully supported.



  (Page last updated 12/31/25)

 
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