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Which Tide tables for crossing the Livingston bar?

 
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Rule Britannia
Super Senior River Rat


Joined: 08 Sep 2009
Posts: 267

PostPosted: Tue Jan 02, 2018 1:41 pm    Post subject: Which Tide tables for crossing the Livingston bar? Reply with quote

It was raining so I have looked at 8 different sources on the internet and the Navionics app on my android phone for tides at the Livingston bar for 1 day (3rd January 2018)

I found that 6 sites agree on the time and height of the tides

2:56 AM CST -0.17 m -0.56 feet Low Tide
9:50 AM CST 0.34 m 1.12 feet High Tide
2:18 PM CST 0.05 m 0.16 feet Low Tide
9:13 PM CST 0.62 m 2.02 feet High Tide

The sites I looked at are
tide-forecast.com
tides.mobilegeographics.com
mayaparaiso.com
www.tides.info/?
tbone.biol.sc.edu/
tidetime.org

2 sites on the net were different to the 6 above but agreed with each other

4:49 AM CST -0.11 m -0.33 ft Low Tide
10:55 AM CST 0.16 m 0.52 ft High Tide
04:11 PM CST 0.02 m 0.07 ft Low Tide
10:20 PM CST 0.32 m 1.05 ft High Tide

The sites were
tideschart.com
myforecast.co/

And the Navionics App on my phone was different again!!

02:48AM CST -0.09m -0.3 feet Low Tide
09:02AM CST 0.67m 2.2 feet High Tide
02:44PM CST -0.27m -0.9 feet Low Tide
08:42PM CST 0.91m 3.0 feet High Tide

I think I got all the times converted to CST where necessary

I do not have a Garmin with tides on it

Any thought on which are correct?

My Speculation
I think the deeper draft boats leaving the river this year have been using the tides heights and times from the 6 sites above and have been leaving on the higher tide of the day and have been having problems with the depth.

In this example it would be 9:13 PM 2.02 feet

08:42PM CST 0.91m 3.00 feet High Tide (Navionics)
09:13PM CST 0.62 m 2.02 feet High Tide (6 Sites)
10:20PM CST 0.32 m 1.05 feet High Tide (The other 2)

Quite a spread in time and heights!

What do you use?

Maybe the Port Captain at Livingston could be persuaded by theMarina owners provide some input?
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XIsle
Super Senior River Rat


Joined: 14 Jul 2012
Posts: 228

PostPosted: Tue Jan 02, 2018 2:26 pm    Post subject: Reply with quote

Hmmm.... My take is tides are predictions or forecasts, similar to weather, tides vary depending on local conditions. Wind, current, barometric pressure and more affect the actual tide verses prediction or tables. When speaking specifically to the bar at the mouth of Rio Dulce, bottom conditions, shifting sands, river floods or and more allow the sandy bottom to shift and move about lending to depth to bottom changes and the entry way-points changes with time.
Learned these lessons over 15 years living/boating in the Florida Keys where a large Florida Bay on one side, Gulf Stream/Atlantic Ocean on another added to a Gulf of Mexico, Gulf Stream resulted in tide predictions at various cuts and locations in the Keys to be completely unpredictable and defying logic (seemingly) although just some miles apart.

X
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tiderunner
Super Senior River Rat


Joined: 15 Dec 2008
Posts: 116
Location: guatemala

PostPosted: Tue Jan 02, 2018 6:56 pm    Post subject: Tides at Livingston Reply with quote

I have a 6 ft draft and have always totally ignored tides because I could never determine when tide was high or not.

I just crossed the bar plowing thru power sailing with main & staysail plus the engine because the bottom was silt........a fine grain mud.

No problem............I just plowed thru.

I use the waypoints provided by Steel Magnolia.

I crossed uptown times...........no problem
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elpolvo
web foote


Joined: 18 Oct 2006
Posts: 3973
Location: rio grande y rio dulce

PostPosted: Wed Jan 03, 2018 10:24 pm    Post subject: Reply with quote

we are now entering the TMIA - too much information age.
FAKE TIDES! (but which ones are the most fake?)
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