Under Section 303(d)(1) of the federal Clean Water Act, each state is required to develop a list of waters within that state which are not supporting their designated uses established in the state Water Quality Standards and establish a total maximum daily load (TMDL), or prepare an TMDL Alternative.
A TMDL is defined as the “calculation of the maximum amount of a pollutant allowed to enter a waterbody so that the waterbody will meet and continue to meet water quality standards for that particular pollutant. A TMDL determines a pollutant reduction target and allocates load reductions necessary to the source(s) of the pollutant.”
Contact Heidi Henderson at heidi.henderson@env.nm.gov with TMDL questions.
Key Documents
- List of New Mexico TMDLs
- List of New Mexico TMDL – Waste Load Allocations (pending)
- Prioritization Framework and 10-year TMDL Vision- 2024 update
TMDLs pending NM WQCC approval
- PUBLIC COMMENT DRAFT – Canadian and Upper Rio Grande Lake TMDLs (April 2024)
Public Comment Draft TMDL – Public Notice (English & Español)
Public Involvement Plan (PIP) – TMDL Factsheet – Public Meeting Flyer
Public Meeting Presentation (pending) - FINAL DRAFT – Gila River and Lower Rio Grande TMDLs (October 2023)
Final Draft TMDL
WQCC presentation (pending) - PUBLIC COMMENT DRAFT – Gila River and Lower Rio Grande TMDLs (August 2023)
Public Comment Draft TMDL – Public Notice (English & Español)
Public Meeting Flyer – Public Involvement Plan (PIP) – TMDL Factsheet
Public Meeting Presentation - FINAL DRAFT – Upper Rio Grande TMDLs (September 2022)
Final Draft TMDL
WQCC presentation - PUBLIC COMMENT DRAFT-Upper Rio Grande TMDLs (June 2022)
Public Comment Draft TMDL – Public Notice (English & Español)
Public Meeting Flyer – Public Involvement Plan (PIP) – TMDL Factsheet
Public Meeting Presentation