Mar 13, 2015

Dry spring ahead?

Despite the recent spatter of summer like rains ...

Overall water levels in The Big Cypress are still low.

This chart displays three of the primary watershed-wide hydrologic parameters for Big Cypress National Preserve.  The top chart displays monthly rainfall relative to historic norms.  The middle chart displays water depth relative to major ecological and statistical thresholds.  And the bottom chart displays sheet flow discharge as measured across the Tamiami Trail by the U.S. Geological Survey.  As a reference, the white (solid-rain, dotted-depth/flow) lines show the normal level.  Can you see how in all three cases water totals are running below average?

The water table is a good half foot below normal for this time of year.

That puts water (or hydric conditions) prevailing in the center of the Preserve's domes and strands.

But don't expect it to last for long.

Water levels are poised to drop another foot before the rainy season starts.

That could have the preserve bone dry by later this spring.

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