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Photo from U.S. Geological Circular 1225--The Quality of Our Nation's Waters--Nuttients and Pesticides

photo of a stream and rushing water

Photo by Jeffrey D. Stoner

The Otter Tail River, Minnesota (above), which supports a healthy growth of wild rice, and Fir Creek, Oregon (right), which contributes to Portland's drinking-water supply, are examples of streams with low nutrient concentrations.



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