Datum Conversions - Fort Monroe (FTMV2) 
Flood Level MLLW MHHW NAVD88
Zero MLLW 0.00 -2.81 -1.70
Action 4.00 1.19 2.30
Minor 4.50 1.69 2.80
Moderate 5.50 2.69 3.80
Major 6.50 3.69 4.80