Information on Ecoregional Nutrient Criteria Documents for Lakes and Reservoirs.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Ecoregion II: Western Forested Mountains (PDF)(107 pp, 389 K)
- Ecoregion III: Xeric West (PDF)(142 pp, 3 MB)
- Ecoregion IV: Great Plains Grass and Shrublands (PDF)(126 pp, 3 MB)
- Ecoregion V: South Central Cultivated Great Plains (PDF)(123 pp, 3 MB)
- Ecoregion VI: Corn Belt And Northern Great Plains (PDF)(85 pp, 315 K)
- Ecoregion VII: Mostly Glaciated Dairy Region (PDF)(91 pp, 342 K)
- Ecoregion VIII: Nutrient Poor Largely Glaciated Upper Midwest and Northeast (PDF)(87 pp, 361 K)
- Ecoregion IX: Southeastern Temperate Forested Plains and Hills (PDF)(99 pp, 384 K)
- Ecoregion XI: The Central and Eastern Forested Uplands (PDF)(95 pp, 355 K)
- Ecoregion XII: Southeastern Coastal Plain (PDF)(77 pp, 287 K)
- Ecoregion XIII: Southern Florida Coastal Plain (PDF)(77 pp, 314 K)
- Ecoregion XIV: Eastern Coastal Plain (PDF)(123 pp, 3 MB)