Inundation Analysis Tool

8632837 Rappahannock Light, VA

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

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
NOS Major -8.331 -27.33 NOS Major Flood Threshold
NOS Moderate -8.331 -27.33 NOS Moderate Flood Threshold
NOS Minor -8.331 -27.33 NOS Minor Flood Threshold
MHHW 0.0 0.0 Mean Higher-High Water
MHW -0.052 -0.17 Mean High Water
DTL -0.285 -0.94 Mean Diurnal Tide Level
MTL -0.292 -0.96 Mean Tide Level
MSL -0.284 -0.93 Mean Sea Level
MLW -0.531 -1.74 Mean Low Water
MLLW -0.571 -1.87 Mean Lower-Low Water
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