Annapolis Tide Gauge, Relation of NAVD to MLLW

  Meters     Feet   Annapolis flood categories
MMLW MSL NAVD MMLW MSL NAVD  
2.25 2.03 2.03 7.38 6.66 6.67  
2.20 1.98 1.98 7.22 6.50 6.50  
2.15 1.93 1.93 7.05 6.34 6.34  
2.10 1.88 1.88 6.89 6.17 6.17  
2.05 1.83 1.83 6.73 6.01 6.01  
2.00 1.78 1.78 6.56 5.84 5.85  
1.95 1.73 1.73 6.40 5.68 5.68  
1.90 1.68 1.68 6.23 5.52 5.52  
1.85 1.63 1.63 6.07 5.35 5.35 Major flood state ( 6 ft, MLLW)
1.80 1.58 1.58 5.91 5.19 5.19  
1.75 1.53 1.53 5.74 5.02 5.03  
1.70 1.48 1.48 5.58 4.86 4.86  
1.65 1.43 1.43 5.41 4.69 4.70  
1.60 1.38 1.38 5.25 4.53 4.53  
1.55 1.33 1.33 5.09 4.37 4.37  
1.50 1.28 1.28 4.92 4.20 4.21  
1.45 1.23 1.23 4.76 4.04 4.04  
1.40 1.18 1.18 4.59 3.87 3.88  
1.35 1.13 1.13 4.43 3.71 3.71  
1.30 1.08 1.08 4.27 3.55 3.55  
1.25 1.03 1.03 4.10 3.38 3.39  
1.20 0.98 0.98 3.94 3.22 3.22  
1.15 0.93 0.93 3.77 3.05 3.06  
1.10 0.88 0.88 3.61 2.89 2.89  
1.05 0.83 0.83 3.44 2.73 2.73  
1.00 0.78 0.78 3.28 2.56 2.57 Moderate flood stage (3.3 ft, MLLW)
0.95 0.73 0.73 3.12 2.40 2.40  
0.90 0.68 0.68 2.95 2.23 2.24  
0.85 0.63 0.63 2.79 2.07 2.07  
0.80 0.58 0.58 2.62 1.91 1.91 Minor Flood stage (2.6 feet MLLW)
0.75 0.53 0.53 2.46 1.74 1.75  
0.70 0.48 0.48 2.30 1.58 1.58  
0.65 0.43 0.43 2.13 1.41 1.42  
0.60 0.38 0.38 1.97 1.25 1.25 Action stage (2 feet MLLW)
0.55 0.33 0.33 1.80 1.09 1.09  
0.50 0.28 0.28 1.64 0.92 0.93  
0.45 0.23 0.23 1.48 0.76 0.76  
0.40 0.18 0.18 1.31 0.59 0.60  
0.35 0.13 0.13 1.15 0.43 0.43  
0.30 0.08 0.08 0.98 0.27 0.27  
0.25 0.03 0.03 0.82 0.10 0.10  
0.20 -0.02 -0.02 0.66 -0.06 -0.06  
0.15 -0.07 -0.07 0.49 -0.23 -0.22  
0.10 -0.12 -0.12 0.33 -0.39 -0.39  
0.05 -0.17 -0.17 0.16 -0.55 -0.55  
0.00 -0.22 -0.22 0.00 -0.72 -0.72  

Source:  NOAA EPOCH=1983-2001


last revised 4/27/2018, to fix a sign error in the conversion from MLLW to MSL, and include the height for Hurricane Isabel