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• Human Stressors metric maps drop down menu • Phosphorus loading ( kg / ha / yr ) Nitrogen loading ( kg / ha / yr ) Total road length Road density Percent total impervious area based on road density Percent total impervious area based on land cover classes Population density Human Stressors metric maps Phosphorus loading ( kg / ha / yr ) Quantile Natural Breaks Nitrogen loading ( kg / ha / yr ) Quantile Natural Breaks Total road length Quantile Natural Breaks Road density Quantile Natural Breaks Percent total impervious area based on road density Quantile Natural Breaks Percent total impervious area based on land cover classes Quantile Natural Breaks Population density Quantile Natural Breaks

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