Maryland's Approach to SB 227 and Flooding Management
Mid-Atlantic State Actions
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Virginia Beach (VA) – 20% increase on Atlas 14 precipitation values for
new development as input into a watershed model
Hampton Roads Planning District (VA) - considering incorporating a
climate precipitation change factor
• Virginia Department of Transportation (DOT) - 20% increase on Atlas 14
precipitation values for bridge design
·
Maryland
Department of
the Environment
New York State DOT - 10-20% increase on Atlas 14 precipitation values for
culvert and natural channel design - based on regions
Pittsburgh (PA) - Managing post development peak flows calculated using
2100 year climate change precipitation data back to existing condition peak
flows calculated using the most recent Atlas 14 precipitation data
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