FUTURE FLOOD PROBABILITIES ALONG WAREHAM’S MAIN STREET CORRIDOR

 Massachusetts Coastal Flood Risk Model- MCFRM tells us water surface elevations (WSEs) and extent of flooding associated with each storm probability.

 Annual exceedance probabilities (AEPs) range from 0.1% through 50%.

 A 1% AEP water level has a 1 in 100 chance of occurring annually (in any given year).

 A 50% AEP water level has a 1 in 2 chance of occurring annually (in any given year).

 In 2030, a 50% storm is associated with a maximum water surface elevation of 6.7ft, while a 0.1% storm could have a maximum water surface elevation at 15.7ft (9 feet higher).

 A 1% storm in 2030 has a maximum water surface elevation of 12.7ft, and by 2070 water levels associated with a 1% storm are 18.7ft.

Massachusetts Coastal Flood Risk Model- MC-FRM Maximum Projected Water Surface Elevations (Feet above NAVD88) for different time horizons and annual storm probability levels