GL: river charts and river levels

[Coleen Barger]

Let me add to the discussion of the absence of 'depths' on the river charts
that the COE's charts for the Tennessee River do let you figure out 'depth,'
if you can do the math. The chart gives the elevations, and you can get
current water levels at the dams, at gauges up and down the river, and
sometimes,
at marinas. Subtract the elevation shown on the chart from the water level,
and that is how much 'depth' you have--for the moment, at least.

Remember is that as water moves down a river, the river's
levels will differ, even within the same pool.
Here are today's readings for the Kentucky Lake pool of the Tennessee River:
Savannah,TN 366.90 (not far below Pickwick Dam)
Perryville,TN 360.02
New Johnsonville,TN 357.32 (still quite a ways from Kentucky Dam)

Note that the difference between Savannah and New Johnsonville is 9.58 feet.
All that water at Savannah is going to keep flowing downstream, so Savannah's
level is going to drop, and New Johnsonville's is going to rise. And it
will all be different in a day or two.
Coleen

Coleen Barger
"Calypso Poet" Carver 466
website -- http://www.calypsopoet.net