100-YR STORM SURGES ARE PROVIDED BY FSU BEACHES AND SHORES RESOURCE CENTER ST LUCIE COUNTY 100 year storm surges Ranges 100 SS ------ ------ 1- 20 12.3 ft.-NGVD 21- 40 12.2 41- 60 12.1 61- 68 12.0 69- 76 11.9 77- 84 11.8 85- 92 11.7 93-100 11.6 101-108 11.5 109-115 11.4