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WCA-3A Regulation Schedule Structure Discharge Rules
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ZONE
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S-12
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S-333
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S-151
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S-343A&B, S-344
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Zone A
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Open full when permitted subject to conditions of note 1 below Zone A is the flood storage pool for WCA-3A. water levels may require the opening of S-12C, S-12B, and/or S-12A during the period 1 Nov-15 July to avoid an unacceptable risk: of failure of WCA-3A levees and structures.
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See note 2 and 3 below. Make maximum allowable discharge subject to downstream conditions.
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See note below. Maximum allowable discharge when WCA-3B stage is below 8.5 ft-NGVD.
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No discharges from 1 Nov- 15 Jul, unless the FWS has determined that nesting for the CSSS sub-population A has ended. If non-nesting season, then make maximum allowable discharges if downstream conditions permit
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Zone B
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Discharge 45% of the computed flow for Shark River Slough. From 1 Jun - 15 July, discharges are limited to S-12D, unless the FWS has determined that nesting for the CSSS sub-population A has ended. If S-333 is closed or discharging less than 28% of computed flow for Shark River Slough, S-12 must discharge at least 73% and up to 100% of the computed flow for Shark River Slough, if capacity is available.
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See note 2 and 3 below. Discbarge 55% of the computed flow for Shark River Slough when permitted by downstream conditions.
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See note 3 below. Maximum allowable discharge when WCA-3B stage is below 8.5 ft-NGVD.
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Closed from 1 Jun through 15 July, or until the FWS has determined that nesting for the CSSS sub-population A has ended. Otherwise, normally closed in this zone, unless water is needed for environmental reasons.
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Zone C
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Discharge 45% of the computed flow for Shark River Slough amount. If S-333 is closed or reduced in flow. S-12 can discharge- up to 100% of the computed flow for Shark River Slough, if desired by ENP, subject to conditions in note 1 below.
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See note 2 and 3 below. Discharge 55% of the computed flow for Shark River Slough when permitted by downstream conditions.
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See note 3 below. Maximum allowable discharge when WCA-3B stage is below 8.5 ft-NGVD.
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No discharges from 1 Nov- 1 Jun. unless the FWS has determined that nesting for the CSSS sub-population A has ended, then make maximum allowable discharges if no downstream problems.
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Zone D
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Discharge 45% of the computed flow for Shark River Slough. From 1 Jun - 15 July, discharges are limited to S-12D, unless the FWS has determined that nesting for the CSSS sub-population A has ended. If S-333 is closed or discharging less than 28% of computed flow for Shark River Slough, S-12 must discharge at least 73% and up to 100% of the computed flow for Shark River Slough, if capacity is available.
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See note 2 and 3 below. Discharge 55% of the computed flow for Shark River Slough when permitted by downstream conditions.
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See note 3 below.
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Closed from 1 Jun through 15 July, or until the FWS has determined that nesting for the CSSS sub-population A has ended, S-343A&B, S-344. Otherwise, normally closed in this zone, unless water is needed for environmental reasons.
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Zone E
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Discharge 45% of the computed flow for Shark River Slough subject to note 1 below.
The L-67A Borrow Canal stage should not be drawn down below 7.5 FT-NGVD unless water is supplied from another source.
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See note 2 and 3 below. Discharge 56% of the computed flow for Shark River Slough when permitted by downstream conditions.
The L-67A Borrow Canal stage should not be drawn down below 7.5 FT-NGVD unless water is supplied from another source.
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See note 3 below.
The L-67A Borrow Canal stage should not be drawn down below 7.5 FT-NGVD unless water is supplied from another source.
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Closed, unless water is needed for environmental reasons.
The L-67A Borrow Canal stage should not be drawn down below 7.5 FT-NGVD unless water is supplied from another source.
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Zone El
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Discharge 45% of the computed flow for Shark River Slough. From 1 Feb - 15 July, discharges are limited to S-12D, unless the FWS has determined that nesting for the CSSS sub-population A has ended. Revert to Zone E rules if the FWS has determined that nesting for the CSSS sub-population A has ended, or if the headwater at S-333 falls below 8.25 ft-NGVD.
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See note 2 and 3 below. Make maximum practicable releases at S-142, S-151, S-31, S-337, S-335, S-333, S-355A&B and S-334. subject to downstream constraints. If the headWatar at S-333 falls below 8.25 ft-NGVD, then revert to Zone E rules.
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Closed during period 1 Nov through 15 July or until the FWS has determined that nesting for the CSSS sub-population A has ended.
If the headwater at S-333 falls below 8.25 ft-NGVD, then revert to Zone E rules.
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Notes:
1. For the S-12 Structure in Zone A, C, E, and E1: From 1 Nov - 31 Dec. discharges are limited to S-12B, C, and/or D. From 1 Jan — 31 Jan, discharges are limited to S-12C and/or D. From 1 Feb - 15 July, discharges are limited to S-12D unless the FWS has determined that nesting for the CSSS sub-population A has ended.
2.If G-3273 is above 6.8 ft-NGVD. no discharges to Northeast Shark River Slough are permitted. However S-333 may discharge up to maximum capacity provided that water can be discharge via S-334 to the South Dade Conveyance system subject to available capacity.
3. Make water supply discharges to the East Coast and ENP-South Dade Conveyance System as needed.
SOURCE: http://my.sfwmd.gov/portal/page/portal/pg_grp_sfwmd_era/portlet_archives_meetings_subtabs/toc_archives/archives/2004_08_26/wca_schedules_082604.pdf.
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