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St. Louis District Low Water Operations

St. Louis District Low Water Operations. Russell Errett Water Control St. Louis District February 2013. Overview. St. Louis District Overview Low Water Operations L&D Operations Middle Mississippi River Forecast Errors Reservoir Deviation/Directive Operations

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St. Louis District Low Water Operations

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  1. St. Louis DistrictLow Water Operations Russell Errett Water Control St. Louis District February 2013

  2. Overview • St. Louis District Overview • Low Water Operations • L&D Operations • Middle Mississippi River Forecast Errors • Reservoir Deviation/Directive Operations • Middle Mississippi River Rock Removal • Questions

  3. USACE

  4. St. Louis District Mark Twain Lake Lake Shelbyville Illinois River Carlyle Lake Missouri River Rend Lake Mississippi River Wappapello Lake

  5. District Overview • 5 Flood Control Reservoirs Projects • Lake Shelbyville, Carlyle Lake, Rend Lake, Mark Twain Lake, and Wappapello Lake • 5 Lock and Dam Projects • L&D 24, L&D 25, Mel Price L&D, L&D 27, and Kaskaskia L&D • 9 Watersheds draining into the Mississippi River within the St. Louis District • Salt, Cuivre, Lower Missouri, Meramec, Upper St. Francis, Castor, Lower Illinois, Kaskaskia, and Big Muddy Rivers

  6. Locks and Dams Melvin Price Locks & Dam L&D 24 Illinois River Locks 27 Missouri River Dam 27 Mississippi River Kaskaskia L&D L&D 25

  7. L&D 25 RM – 241.2 Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 Mel Price L&D RM - 201.1 16.2 Alton RM – 203.0 419.0 14.2 414.0 412.5 Low Flow / Flat Pool

  8. L&D 25 RM – 241.2 Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 Mel Price L&D RM - 201.1 16.2 Alton RM – 203.0 419.0 14.2 414.0 412.5 Increasing / Decreasing Flow

  9. L&D 25 RM – 241.2 Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 Mel Price L&D RM - 201.1 16.2 Alton RM – 203.0 419.0 14.2 414.0 412.5 Maximum Drawdown

  10. L&D 25 RM – 241.2 Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 Mel Price L&D RM - 201.1 16.2 Alton RM – 203.0 419.0 14.2 414.0 412.5 Open River

  11. L&D 25 RM – 241.2 Flow Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 • Government Owned Flowage Easements Low Flow / Flat Pool Mel Price L&D RM - 201.1

  12. L&D 25 RM – 241.2 Flow Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 • Government Owned Flowage Easements Increasing / Decreasing Flow Mel Price L&D RM - 201.1

  13. L&D 25 RM – 241.2 Flow Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 • Government Owned Flowage Easements Maximum Drawdown Mel Price L&D RM - 201.1

  14. L&D 25 RM – 241.2 Flow Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 • Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM – 218.6 • Government Owned Flowage Easements Open River Mel Price L&D RM - 201.1

  15. Hinge Point Operation • Lock and Dam 24 • Pool Limits: 445.5 - 449.0 • Hinge Point Limits, Louisiana: 11.5 - 12.2 (May be exceeded if at maximum drawdown) • Lock and Dam 25 • Pool Limits: 429.7 - 434.0 • Hinge Point Limits, Mosier Landing: 434.0 - 437.0 (May be exceeded if at maximum drawdown) • Melvin Price Locks and Dam • Pool Limits: 412.5 - 419.0 Alton Lower Limit: 414.0 • Hinge Point Limits, Grafton: 14.2 - 16.2 (May be exceeded if at maximum drawdown, or Alton at 414.0) • Kaskaskia Lock and Dam • Pool Limits: 363.0 - 368.8 • Hinge Point, Red Bud: 368.0 - 370.0

  16. Critical Link Illinois River @ Meredosia Mississippi River @ L&D 22 Missouri River @ Hermann Mississippi River @ St. Louis Critical Link

  17. Middle Mississippi River Low Water

  18. Historical Droughts Top 10 Low Water Stages at St. Louis -4.8 (JAN 1957) -4.6 (JAN 1956) -4.5 (JAN 2003)* -4.3 (DEC 1933) -4.3 (JAN 1954) • -6.2 (JAN 1940) • -5.8 (JAN 1963) • -5.6 (JAN 1964) • -5.5 (DEC 1937) • -5.4 (DEC 1989)* -4.6 (JAN 2013)* *Indicates instantaneous gage reading vs 08:00 reading.

  19. St. Louis (1861-Present) • Daily Record Lows • 1967 - 2013: 51 days • POR: 14 days • Record Low • 1967 - 2013: -5.4 ft (Dec 1989) • POR: -6.2 ft (Jan 1940)

  20. Mel Price Low Water Operations • Approved Deviation to hold Mel Price 0.5 ft above maximum regulated pool • Minimize fluctuations downstream (i.e. St. Louis Harbor) • Extra storage is used to prevent low dips from L&D operations upstream • Extra storage can be used to provide a pulse of water to free grounded tows if needed

  21. Mel Price Low Water Operations Actual W/O Mel Price Deviation Mel Price Pool Prevented daily +2 ft stage fluctuations at St. Louis St. Louis

  22. Mel Price Low Water Operations(September & October) Actual W/O Mel Price Deviation Mel Price Pool Prevented St. Louis from dropping to -4.6 St. Louis

  23. Mel Price Low Water Operations(December & January) Actual W/O Mel Price Deviation Mel Price Pool Prevented St. Louis from dropping to -5.1 St. Louis

  24. Extended River Forecast Errors

  25. Extended River Forecast(issued late November) • Currently St. Louis is at -0.7 ft • 7,000 cfs/ft • Upper Mississippi River Flow Forecast • Currently ~ 39,200 cfs • 28 days ~ 21,500 cfs (-17,700 cfs) • Missouri River Flow Forecast • Currently ~ 48,700 cfs • 28 days ~ 24,000 cfs (-24,700 cfs) • St. Louis 28 day Forecast • Loss of 42,400 cfs ~ loss of 6 ft ~ -6.7 ft at St. Louis

  26. Accounting for Forecast Errors • Assuming St. Louis Low of -5.1 ft (i.e. no Mel Price operation) • 6,000 cfs/ft • Upper Mississippi River Flow Forecast • Error ~ -1,140 cfs • Illinois River • Error ~ -3,000 to -6,000 cfs • Missouri River Flow Forecast • Error ~ -3,300 cfs • St. Louis Low: • Loss of 7,440 to 10,440 cfs ~ -6.3 ft to -6.8 ft

  27. Reservoir Operations

  28. Lake Shelbyville Reservoirs Mark Twain Lake Illinois River Carlyle Lake Missouri River Wappapello Lake Mississippi River Rend Lake

  29. Lake Shelbyville Project Purposes • Flood Control • Recreation • Fish and Wildlife Conservation • Water Supply • Water Quality • Navigation • Lower Kaskaskia River • Middle Mississippi River Carlyle Lake Thebes, IL CHESTER, IL CAIRO, IL

  30. Lake Shelbyville Project Purposes • Navigation • Authorized to release up to bankfull (4,000 cfs from Carlyle Lake) • Can provide at least 0.5 ft increase in stages on the Middle Mississippi during low water Carlyle Lake Thebes, IL CHESTER, IL CAIRO, IL

  31. Lake Shelbyville Deviations • Approved Deviation on August 30th • Hold addition storage from the anticipated runoff from Hurricane Isaac • Shelbyville ~ 602.0 (+2.3) • Carlyle ~ 447.0 (+2.0) Carlyle Lake Thebes, IL CHESTER, IL CAIRO, IL

  32. Lake Shelbyville Directives • Directive issued from our division office on October 17th • Hold up to 10% of guide curve Carlyle Lake Thebes, IL CHESTER, IL CAIRO, IL

  33. Reservoir Operations Lake Shelbyville Carlyle Lake Timely releases prevented less than 9 ft depth at Thebes Thebes

  34. Rock Removal • Remnants of the 1988-1989 rock removal • Grand Tower Reach (RM 78.9 to 80.0) • Thebes Reach (RM 38.5 to 46.0) Rock Pinnacles Thebes Reach

  35. ? ? ? Questions ? ? ?

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