If you get really inspired you can download the data from the NOAA and USGS site in tabular form and compare the actual river levels versus the predicted tide tables. I did that a while back and came to the same conclusions as "W", there is a lot of variation and it didn't directly correlate to the wind speed and direction although I know the wind plays a big factor. If you really want to confuse yourself consider this: When the tide is high you would logically think that the current would be slack and when you are half way between tides you should have maximum current because that is when the levels are changing most rapidly. True for some river systems but not so for the Calcasieu I was informed by the hydrological scientist at USGS. For the Calcasieu, the tide and the current max at the same time at least at the Cameron Lighthouse but there is usually even a little lag there from the predicted tide tables.
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