I'm trying to understand how to properly read tidal information provided by my Navionics iPhone app. I know how to access the tidal information, I just can't read it properly. When I click on a tidal icon on the navionics app, tidal information pops up at the bottom of the screen. However, if I were to click anywhere else on the river (Connecticut River - Haddam), a different illustration shows up at the bottom of the screen. Why are there two different illustrations used to get tidal information?
In the 2nd picture (directly above), I see a downward facing arrow that's blue. Does the blue color indicate that it's an incoming or flood tide? Because, from what I know about reading a tide graph with peaks and valleys, is that a peak would be max flood (or incoming) and the valley is dead low. This doesn't seem to be the case when I look at this illustration. When I click "details" it tells me that 5:54 pm is "ebb" at .74 mph. And that slack is at 9:45 pm. When I put the crosshair exactly on the straight horizontal line, it's at 9:45pm. The arrow color then switches to red and the direction of the arrow points up as seen here:
Is this tidal illustration measuring the velocity of the current with peaks and valleys? When I move the crosshairs to the absolute peak or valley, the current speed is at it's maximum, however the color of the arrow (NOT THE DIRECTION OF THE ARROW) switches from red to blue as seen here:
I don't understand why the color but not the direction of the arrow changes at the peaks and valleys. Could anybody help me out, because I had trouble figuring this out from navionics help pages. Thanks.
