Inundation Analysis Tool


8638660 PORTSMOUTH, NORFOLK NAVAL SHIPYARD, VA

Please see the data inventory to find a period with hourly or six-minute data available.
Data Inventory

Note that this is a historical station and data may be available between 1910-07-22 00:00:00 and 1993-01-29 23:59:00


Select a reference elevation and specify a date range for analysis.

You may select from an accepted tidal datum or specify a different elevation.
Most elevations on land are given relative to a geodetic datum such as NAVD88

All analysis results are presently provided in meters relative to the requested threshold.

Meters relative to MHHWFeet relative to MHHWDatum
MHHW 0.0 0.0 Mean Higher-High Water
MHW -0.064 -0.21 Mean High Water
DTL -0.473 -1.55 Mean Diurnal Tide Level
MTL -0.484 -1.59 Mean Tide Level
MSL -0.482 -1.58 Mean Sea Level
MLW -0.904 -2.97 Mean Low Water
MLLW -0.946 -3.1 Mean Lower-Low Water
NAVD88 -0.4 -1.31 North American Vertical Datum
User Specified Elevation         in       relative to   


Note: Data query is limited to a 10 year maximum and 1 month minimum date range when requesting an analysis of 6-minute data


6-minute Height and High Water Analysis
Hourly Height and High Water Analysis
Hourly Height Analysis