St. Louis District Low Water Operations

US Army Corps of EngineersBUILDING STRONG®

St. Louis DistrictLow Water Operations

Russell ErrettWater ControlSt. Louis District

February 2013

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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

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USACE

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Lake Shelbyville

Rend Lake

Carlyle Lake

Wappapello Lake

Mark Twain Lake

Mississippi River

Illin

ois

Riv

er

Missouri River

St. Louis District

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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

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Mississippi River

Illin

ois

Riv

er

Missouri River

Locks and Dams

Locks 27

Melvin PriceLocks & Dam

Kaskaskia L&DL&D 25

Dam 27

L&D 24

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419.0

412.5

Mel Price L&DRM - 201.116.2

14.2414.0

L&D 25RM – 241.2

GraftonRM – 218.6

AltonRM – 203.0

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)

Low Flow / Flat Pool

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419.0

412.5


14.2414.0

L&D 25RM – 241.2

GraftonRM – 218.6

AltonRM – 203.0



Increasing / Decreasing Flow

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419.0

412.5


14.2414.0

L&D 25RM – 241.2

GraftonRM – 218.6

AltonRM – 203.0



Maximum Drawdown

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419.0

412.5


14.2414.0

L&D 25RM – 241.2

GraftonRM – 218.6

AltonRM – 203.0

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)

Open River

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Government Owned Flowage Easements

Mel Price L&DRM - 201.1

L&D 25RM – 241.2

GraftonRM – 218.6

Low Flow / Flat Pool

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)

Flow

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L&D 25RM – 241.2

GraftonRM – 218.6

Increasing / Decreasing Flow




Flow

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L&D 25RM – 241.2

GraftonRM – 218.6




Flow

Maximum Drawdown

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L&D 25RM – 241.2

GraftonRM – 218.6




Flow

Open River

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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

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Critical Link

Critical Link

Illinois River@ Meredosia

Mississippi River@ L&D 22

Missouri River@ Hermann

Mississippi River@ St. Louis

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Middle Mississippi River

Low Water

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Historical DroughtsTop 10 Low Water Stages at St. Louis

1. -6.2 (JAN 1940)2. -5.8 (JAN 1963)3. -5.6 (JAN 1964)4. -5.5 (DEC 1937)5. -5.4 (DEC 1989)*

6. -4.8 (JAN 1957)7. -4.6 (JAN 1956)8. -4.5 (JAN 2003)*9. -4.3 (DEC 1933)10. -4.3 (JAN 1954)

-4.6 (JAN 2013)*

*Indicates instantaneous gage reading vs 08:00 reading.

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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)

St. Louis (1861-Present)

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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

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Mel Price Low Water Operations Actual W/O Mel Price Deviation

Mel

Pric

e Po

olSt

. Lou

is

Prevented daily +2 ft stage fluctuations at St. Louis

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Mel Price Low Water Operations(September & October)

Actual W/O Mel Price Deviation

Prevented St. Louis from dropping to -4.6

Mel

Pric

e Po

olSt

. Lou

is

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Mel Price Low Water Operations(December & January)

Actual W/O Mel Price Deviation

Mel

Pric

e Po

olSt

. Lou

is

Prevented St. Louis from dropping to -5.1

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Extended River Forecast Errors

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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

Extended River Forecast(issued late November)

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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

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Reservoir Operations

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Mississippi River

Illin

ois

Riv

er

Missouri River

Reservoirs

Mark Twain Lake

Lake Shelbyville

Carlyle Lake

Rend LakeWappapello Lake

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Project Purposes Lake Shelbyville

Carlyle Lake

Thebes, ILCHESTER, IL

CAIRO, IL

Flood Control Recreation Fish and Wildlife Conservation Water Supply Water Quality Navigation

Lower Kaskaskia River Middle Mississippi River

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Project Purposes Lake Shelbyville

Carlyle Lake


CAIRO, IL

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

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Deviations Lake Shelbyville

Carlyle Lake


CAIRO, IL

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)

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Directives Lake Shelbyville

Carlyle Lake


CAIRO, IL

Directive issued from our division office on October 17th

Hold up to 10% of guide curve

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Reservoir OperationsTh

ebes

Car

lyle

Lak

eLa

ke S

helb

yvill

e

Timely releases prevented less than 9 ft depth at Thebes

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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

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? ? ? Questions ? ? ?

St. Louis District Low Water Operations

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