Inundation Analysis Tool


9452081 PORT SNETTISHAM, SPEEL RIVER ARM, AK

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 1928-05-28 00:00:00 and 2024-08-21 00:00:00


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 -0.294 -0.96 Mean High Water
DTL -2.314 -7.59 Mean Diurnal Tide Level
MTL -2.263 -7.42 Mean Tide Level
MSL -2.266 -7.43 Mean Sea Level
MLW -4.233 -13.89 Mean Low Water
MLLW -4.629 -15.19 Mean Lower-Low Water
NAVD88 -3.865 -12.68 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