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['Water Programs']
['Point Sources', 'Water Permitting', 'Stormwater', 'Municipal Wastewater', 'Industrial Wastewater', 'Water Quality']
05/06/2022
40 CFR 122 Appendix E Rainfall Zones of the United States

Not Shown: Alaska (Zone 7); Hawaii (Zone 7); Northern Mariana Islands (Zone 7); Guam (Zone 7); American Samoa (Zone 7); Trust Territory of the Pacific Islands (Zone 7); Puerto Rico (Zone 3) Virgin Islands (Zone 3).
Source: Methodology for Analysis of Detention Basins for Control of Urban Runoff Quality, prepared for U.S. Environmental Protection Agency, Office of Water, Nonpoint Source Division, Washington, DC, 1986.
[55 FR 48073, Nov. 16, 1990]
['Water Programs']
['Point Sources', 'Water Permitting', 'Stormwater', 'Municipal Wastewater', 'Industrial Wastewater', 'Water Quality']
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