Proposed Nutrient Concentration Objectives and Loading Targets for the Red River at the US/Canada Boundary

Date
Precis

In September 2019, the International Red River Board (the Board) recommended that the International Joint Commission (IJC) adopt proposed nutrient concentration objectives and targets for the Red River at the boundary between the United States and Canada. This proposal is the culmination of a rigorous scientific 9-year long effort by the Water Quality Committee of the Board, the results of which indicate that the proposed objectives and targets are important factors in understanding and addressing water quality issues in the basin. The IJC recommends that a nutrient concentration objective of 0.15 mg/L for total phosphorus and a nutrient concentration objective of 1.15 mg/L for total nitrogen calculated on the basis of a seasonal average from April 1 to October 30 be included in the Board’s current list of Water Quality Objectives. It recommends that nutrient load targets of 1,400 tons/year for total phosphorus and 9,525 tons/year for total nitrogen calculated on the basis of a five year running average also be added to the Board’s current list of Water Quality Objectives.

Organization
International Joint Commission