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DPM Design

DPM Design. MWD / CSOP Engineering Design and Hydrologic Considerations 30 August 2007. Overview. WCA-3A to WCA-3B Conveyance Features 1992 MWD GDM 2006 CSOP TSP CSOP Controllable Conveyance Features DPM Design Available Engineering Data DPM Design Available Hydrologic Data.

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DPM Design

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  1. DPM Design MWD / CSOP Engineering Design and Hydrologic Considerations 30 August 2007

  2. Overview • WCA-3A to WCA-3B Conveyance Features • 1992 MWD GDM • 2006 CSOP TSP • CSOP Controllable Conveyance Features • DPM Design Available Engineering Data • DPM Design Available Hydrologic Data

  3. WCA-3A to WCA-3B Conveyance • 1992 MWD GDM • 3 identical gated culvert structures (S-345s) • Each with three 72-inch CMP or concrete pipes with manually-operated slide gates • Design discharge: 500 cfs for HW of 9.4 and TW of 7.9 • Discharge channels (30-foot bottom width) with containment levees between L-67A and L-67C and 1000-foot tie-back levees beyond L-67C levee • Discharge channels include L-67C gaps and canal fill • S-349 structures with boat by-pass south of each S-345s • S-355s design discharge: • 1000 cfs at each structure at HW of 9.2 and TW of 8.9

  4. WCA-3A to WCA-3B Conveyance • 2006 CSOP Tentatively Selected Plan • 3 identical “hybrid” structures • Stop-log riser structure (AVAILABLE FOR DPM) • Five box culverts (10 ft width x 8 ft height x 16 ft length) • Inflow control elevation set at ground surface elevation • Structures able to be closed • Passive Weir Structure (NOT AVAILABLE FOR DPM) • Six box culverts (10 ft wide x 8 ft height x 16 ft length) • Sheet-pile passive weirs upstream of box culverts • Upstream approach channel (220 ft width, 90 ft length) • Downstream spreader canal (800 ft length) • S-349s replaced by 100 ft length boat plugs • S-355s as constructed, based on 1992 GDM

  5. WCA-3A to WCA-3B Conveyance

  6. CSOP Controllable Conveyance • DPM conveyance from WCA-3A to WCA-3B limited to stop-log riser structures due to system constraints, including Tamiami Trail • Design information for L-67A conveyance structures is based on rating curves: f ( HW, TW, friction losses ) • Frequency and timing of various discharge volumes can be estimated based on review of historic water stages • IOP operations anticipated during DPM: started June 2002 • Actual DPM discharge volumes are uncertain and will be driven by climatologic conditions, since conveyance structures are gravity-driven

  7. Available historical water stage data: WCA-3A: Site 64 L67 “pocket”: Site 69 WCA-3B: Site 71 Notes: Transect is located between proposed northern and middle L67A structures Site 71 influenced by remaining L67C gap Existing Canal / spoil material 2.5 miles north of L-29 must be considered for DPM CSOP Controllable Conveyance

  8. CSOP Controllable Conveyance HW TW

  9. CSOP Controllable Conveyance Peak dry or wet Season head gradient (no friction losses) HW

  10. CSOP Controllable Conveyance

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