https://www.ohiomfg.com/our-communities/ohio-epa-addressing-river-nutrient-standards/
Ohio EPA Addressing River Nutrient Standards | The Ohio Manufacturers' Association
Ohio EPA has issued Early Stakeholder Outreach regarding a new water quality standards rule that would address large river nutrients. You can read the related...
nutrient standardsohioepaaddressingriver
https://gis.data.mn.gov/datasets/river-nutrient-standards
River Nutrient Standards
These data are intended to be used for planning, informational, and cartographic purposes related to surface water quality in Minnesota.
rivernutrientstandards