Tide vs. Water Level (Please add water level)

[Nerdo]

Here on the Potomac River & many other locations the forecasted tide is not equal to water level.

Example: the forecasted high tide today was 3' MSL but the observed high water level was 5.75' MSL.

There are many factors that affect the level of the water on the river.

I would suggest adding an observed water level function. NOAA has a website that has the data available. NOAA site

If you need to understand why this is important, the same reasons why actual conditions vs forecasted apply.