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Under Section 303(d) of the Clean Water Act, states, territories, and
authorized tribes are required to develop a list of water quality limited segments.
The waters on the list do not meet water quality standards, even after point sources of
pollution have installed the minimum required levels of pollution control technology.
The law requires for waters on the list that priority rankings be established for the
development of action plans, called Total Maximum Daily Loads (TMDLs), to improve the
water quality.
- Board-Approved 2006 Clean Water Act Section 303(d) List of Water
Quality Limited Segments
The following documents contain the draft list of waters and pollutants that
still need TMDLs. This portion of the list is required by section 2.1 of the
Listing Policy.
- List of Water Quality Limited Segments Being Addressed By USEPA Approved TMDLs
This portion of the section 303(d) list contains those waters and pollutants where a TMDL has been approved and an implementation is available but water quality standards are not yet met. This portion of the list is required by section 2.2(1) of the Listing Policy.
- List of Water Quality Limited Segments Being Addressed By Action Other Than TMDLs
This portion of the section 303(d) list contains those waters and pollutants where the water quality problem is being addressed by an action other than a TMDL and water quality standards are not yet met. This portion of the list is required by section 2.2(2) of the Listing Policy.
- Staff Reports
The changes in the section 303(d) list are documented in the Staff Report presented below. The Staff Report has four volumes. You can select to download an entire report or portions of a report.
- Volume I - Revision of the Clean Water Act Section 303(d) List of Water Quality Limited Segments
This document contains the listing methodology used, summaries of the proposed additions, deletions and area changes; the 2002 section 303(d) list; and references to all data and information in the administrative record. (Note: These documents can be navigated using the bookmarks embedded in the document.)
- Volume II - Water Body Fact Sheets Supporting the Listing and Delisting Recommendations
This documents contains the fact sheets supporting recommendations for listing, delisting, and area changes for the North Coast, San Francisco Bay, Central Coast, and Los Angeles regions
(Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
- Volume III: Water Body Fact Sheets Supporting
the Listing and Delisting Recommendations
This document contains the fact sheets supporting
recommendations for listing, delisting, and area changes for the Central
Valley, Lahontan, Colorado River Basin, Santa and San Diego regions.
(Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
- Volume IV: Responses to Comments
This document contains a summary of responses to comments received
- Additional Staff Recommendations
Two additional staff reports have been assembled
that document State Water Board staff review of data and information that
resulted in (1) recommendations to not place waters or pollutants on the
section 303(d) list and (2) recommendations to remove waters or pollutants from
the section 303(d) list.
- Staff Report -
Evaluation of Data and Information Related to the
Clean Water Act Section 303(d) List of Water Quality Limited Segments:
Water Body Fact Sheet Supporting “Do Not List” Recommendations.
(Note: This document can be navigated using the bookmarks embedded in the document.)
- Staff Report - Evaluation of Data and Information Related to the Clean Water Act Section 303(d) List of Water Quality Limited Segments: Water Body Fact Sheets Supporting “Do Not Delist” Recommendations.
(Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
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