Inundation Analysis Tool

9461710 Atka, AK

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
MHHW 0.0 0.0 Mean Higher-High Water
MHW -0.067 -0.22 Mean High Water
DTL -0.521 -1.71 Mean Diurnal Tide Level
MTL -0.476 -1.56 Mean Tide Level
MSL -0.443 -1.45 Mean Sea Level
MLW -0.885 -2.9 Mean Low Water
MLLW -1.042 -3.42 Mean Lower-Low Water
NAVD88 -0.775 -2.54 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