USGS - Science for a changing world

Nutrient Concentrations in our Water ts

This Science Feature can be found at: http://www.usgs.gov/blogs/features/usgs_top_story/nutrient-concentrations-in-our-water/
Agricultural and urban areas contribute to elevated nutrient concentrations

Agricultural and urban areas contribute to elevated nutrient concentrations

Nutrient sources in both agricultural and urban areas contribute to elevated nutrient concentrations in streams and groundwater across the Nation.

More information