Inundation Analysis Tool


9455090 Seward, 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 -0.279 -0.92 Mean High Water
DTL -1.619 -5.31 Mean Diurnal Tide Level
MTL -1.548 -5.08 Mean Tide Level
MSL -1.545 -5.07 Mean Sea Level
MLW -2.818 -9.25 Mean Low Water
MLLW -3.239 -10.63 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