Sep 6, 2012

2-for-1 hydrologic sale

Why does Lake O rise so dramatically after a big rain?

a. Big rains fall on it twice: once (and immediately) as direct rainfall and again in the days and weeks ahead in the form of inflows, primarily the Kissimmee River, from the north.  Call it a two for one sale.

Just like that, the littoral zone wetlands are full.
Remember last summer when they were completely dry?

Or could it be:

b. It's perimeter levee doesn't let the water spread out, as it did in the days of unfettered sheetflow, into the Sawgrass Plain to the south.

c. Last I checked, the regulatory release gates (via the Caloosahatchee or St Lucie) were largely closed.

d.  Evaporation from the Lake no longer exists.


Answer:

e. All of the above (except d.)

1 comment:

Janie said...

Water levels and flows are complicated, no matter where you are. In figuring how much water is available for irrigation each year, our "ditch rider" (local irrigation planner and controller) has to become a mini-hydrologist to figure out how much water each user gets.