Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Monitoring, Assessment and TMDLs
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Nevada Water Quality
Nevada Division of Environmental Protection is responsible for conducting monitoring, assessment, reporting under CWA Sections 303(d) and 305(b), and TMDL development for the State of Nevada. More information about Nevada's programs can be found at Nevada's Division of Environmental Protection's Bureau of Water Quality Planning page or through EPA and Nevada staff.
Nevada's Integrated Report
On February 1, 2013, EPA partially approved and partially disapproved Nevada’s 2008-2010 303(d) list of waters requiring a Total Maximum Daily Load (TMDL). EPA approved waters Nevada identified as requiring a TMDL, and disapproved the omission of 19 waters EPA determined to be impaired due to mercury in fish tissue. EPA’s action added the 19 identified water body – pollutant combinations.
Following a public comment period on EPA’s notice to add waters, on April 18, 2013, EPA transmitted to the state the final list of added water body – pollutant combinations and a responsiveness summary addressing how public comments were considered in the final EPA decision. Provided below are the February 2013 partial approval / partial disapproval letter and the April 2013 letter and enclosure presenting the final list of added waters and responsiveness summary (see EPA documents). The State’s 303(d) lists are available at the link under State Documents, below.
Susan Keydel (firstname.lastname@example.org)
U.S. Environmental Protection Agency
75 Hawthorne St, WTR-2
San Francisco, CA 94105
Tel. (415) 972-3106
- EPA’s February 2013 partial approval / partial disapproval letter (PDF) (2 pp, 100K) and enclosure (PDF) (13 pp, 400K), with the added waters
- EPA’s Public Notice for public comment period (PDF) (1 pp, 50K) Comments due by March 11, 2013
- EPA’s April 2013 letter conveying the final list and response to comments (PDF) (9 pp, 446K)
Nevada’s 2008-10 Section 303(d) list of waters requiring a TMDL is available in Attachment 4 of Nevada’s 2008-10 Water Quality Integrated Report, available at the Nevada Division of Environmental Protection web page.
TMDLs in Nevada
Information on the status of TMDLs being developed or previously developed by Nevada Division of Environmental Protection can be found at NDEP's Total Maximum Daily Loads page.
Lake Tahoe TMDL
- Lake Tahoe TMDL Submittal Letter (PDF) (2 pp, 792K)
- Final Lake Tahoe TMDL (PDF) (338 pp, 5.1MB)
- NDEP Revisions to Lake Tahoe TMDL (PDF) (2 pp, 214KB)
- Watershed Priorities in the Tahoe Basin
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