Inundation Analysis Tool


8772440 Freeport, TX

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 1954-04-08 00:00:00 and 2008-03-19 23:59:00


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 -0.042 -0.14 Mean High Water
DTL -0.268 -0.88 Mean Diurnal Tide Level
MTL -0.247 -0.81 Mean Tide Level
MSL -0.245 -0.8 Mean Sea Level
MLW -0.453 -1.49 Mean Low Water
MLLW -0.536 -1.76 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