Three states in EPA Region 1 have developed TMDLs using impervious cover and flow as surrogates for stormwater-source pollutants in streams listed for biological impairment.

• Barberry Creek, Maine, Total Maximum Daily Load (PDF)(41 pp, 3 MB)
• A Total Maximum Daily Load Analysis for Eagleville Brook, Mansfield, Connecticut (PDF)(43 pp, 632 K)