S12D

All the S12 structures — they’re the ones that deliver water into downstream Everglades National Park — are closed except for the easternmost S12D (shown above). As of yesterday, it was discharging at around 50 cfs. Click here to see a historical calendar of flows through the S12D.

If you look closely in the background of the photo, you will also see the S333. S333 is the structure that lets water out of WCA3A and into the 3B’s L29 Canal. Once it enters the L29 Canal, the water has one of two choices: (1) flowing into the Northeast Shark River Slough through the The L29 Culverts or (2) leaving the Everglades through the S334 structure, located about 10 miles to the east towards Miami. S333 and S334 are operated in tandem to coordinate these flows. Click here to see a historical calendar of flows through the S333.

Next time you’re driving through the Everglades along US41, be on the lookout for the S333. You’ll notice it, if you’re driving west, by the crook in the road where US41 rises a couple feet in elevation. This is the spot where US41 hops on top of the L29 Levee for its ride across the western S12 stretch.

Back in the rearview, to the east of the S333, US41 doesn’t share the roadbed with L29 Levee. You’ll notice it across the canal to the north instead — where it was strategically placed as part of the 1948 South and Central Florida Project for the purpose of keeping surface water from leaking too quickly into the underlying Biscayne Aquifer.

What’s the saying — a picture tells a thousand words. That saying definitely applies when you’re looking at water in the Everglades.

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