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Numeric Nutrient Criteria: Methods for Developing Inland Criteria

Numeric Nutrient Criteria: Methods for Developing Inland Criteria. Jacques L. Oliver U.S. EPA Office of Water, Office of Science and Technology Health and Ecological Criteria Division Washington, D.C. National Nutrient-related listing and TMDL Results.

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Numeric Nutrient Criteria: Methods for Developing Inland Criteria

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  1. Numeric Nutrient Criteria:Methods for Developing Inland Criteria Jacques L. Oliver U.S. EPA Office of Water, Office of Science and Technology Health and Ecological Criteria Division Washington, D.C.

  2. National Nutrient-related listing and TMDL Results • Of 75,677 impairments nationwide, 15,101 (20%) are “nutrient-related” (defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’). • Of 40,698 TMDLs nationwide, 7,412 (18%) are “nutrient-related” • Based on the most recent 303(d) list data available in ATTAINS as of January 27, 2010 -- http://www.epa.gov/waters/tmdl/expert_query.html

  3. States’ 303(d) Listed Water Quality ‘Nutrient-related’ Impairments AK HI VI Greater than 800 303(d) listings for nutrients (5) CNMI >200 and <800 listings due to nutrients (16) >100 and <200 listings due to nutrients (6) PR AS GU Less than 100 listings due to nutrients (29) Based on information in Expert Query (ATTAINS) as of 10/23/2009. Of 75,675 impairments nationwide, 15,101 (20%) are due to nutrient-related defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’. This data is based on the most recent 303(d) list data available in ATTAINS.

  4. ‘Nutrient-related’ TMDLs AK HI VI Greater than 800 TMDLs for nutrients (0) CNMI >200 and <800 TMDLs for nutrients (12) >100 and <200 TMDLs for nutrients (9) PR AS GU Less than 100 TMDLs for nutrients (32) Based on information in Expert Query (ATTAINS) as of 01/14/2010. 7,261 TMDLs were nutrient-related. Nutrient-related is defined as ‘nutrients, organic enrichment/oxygen depletion, noxious plants, algal growth, and ammonia’.

  5. Questions?

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