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Lake Tahoe TMDL Program

Quick Links


TMDL Development

Available Documents

Lake Tahoe Total Maximum Daily Load Report (November 2010 - minor adjustments made to October 2010 version consistent with Basin Plan Amendment adopted by Lahontan Water Board on November 16, 2010)

Basin Plan Amendment Process

Basin Plan Amendment and Resolution adopted by the State Water Resources Control on April 19, 2011

Peer Review

Lake Tahoe Watershed Model and Lake Clarity Model

TMDL GIS Land-use Layer is available as a zip file for public distribution. This land-use layer was developed for Lake Tahoe TMDL modeling purposes.
Note: see either text or excel file LUCodeKey in the zip file to relate land-use grid codes to land-use names.

TMDL Implementation

Lake Clarity Crediting Program

Pollutant Load Reduction Model

Best Management Practices Maintenance Rapid Assessment Methodology (BMP RAM)

  • BMP RAM Technical Document - Background information describing how the tool works and the rationale for tool development choices
  • BMP RAM User Manual - Specific protocols to create a Treatment BMP Inventory, conduct field observations, and interact with the database
  • Custom BMP RAM Database to manage necessary data and calculate BMP RAM Scores. Microsoft Access 2007 is required. Database users should be familiar with both the Technical Document and User Manual instructions to properly navigate the database

Roadway Rapid Assessment Methodology (Road RAM)

  • Please visit the Nevada Division of Environmental Protection website for additional details.  Two documents are available for download - a Technical Document describing the rationale and science behind tool development and a User Manual that defines specific Road RAM protocols.

Lake Tahoe Municipal NPDES Permit

Nevada Division of Environmental Protection Website

Outreach and Education

Lake Tahoe Charting the Course to Clarity hosted on Vimeo.

Charting the Course to Clarity 2008-2009



Lake Tahoe TMDL Symposium - December 9-10, 2004

Pathway 2007 Planning Process