Inundation Analysis Tool


8775131 Portland

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 2019-09-20 00:00:00.0 and 2020-06-20 14:42:00.0


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 -0.007 -0.02 Mean High Water
DTL -0.094 -0.31 Mean Diurnal Tide Level
MTL -0.096 -0.31 Mean Tide Level
MSL -0.08 -0.26 Mean Sea Level
MLW -0.184 -0.6 Mean Low Water
MLLW -0.188 -0.62 Mean Lower-Low Water
NAVD88 -0.307 -1.01 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