Joan Stemler. Water Control. St. Louis District. November US Army Corps of Engineers BUILDING STRONG

Transcription

1 St. Louis District Low Water Operations Joan Stemler Water Control St. Louis District November 2012 US Army Corps of Engineers BUILDING STRONG

2 Overview St. Louis District Overview St. Louis District L&D Operations Low Water Operations Extended River Forecast Reservoir Operations Low Water Reference Plane Questions

3 USACE

4 St. Louis District Mark Twain Lake Illinois Rive rmark Twain Lake Shelbyville Carlyle Lake Rend Lake Wappapello Lake

5 District Overview 5 Flood Control Reservoirs Projects Lake a e Shelbyville, e, 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 L&D 24 r Illinois Rive Melvin Price Locks & Dam Locks 27 L&D 25 Kaskaskia L&D

7 L&D 25 RM Melvin Price Locks and Dam Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Alton RM Mel Price L&D RM Low Flow / Flat Pool

8 L&D 25 RM Melvin Price Locks and Dam Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Alton RM Mel Price L&D RM Increasing / Decreasing Flow

9 L&D 25 RM Melvin Price Locks and Dam Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Alton RM Mel Price L&D RM Maximum Drawdown

10 L&D 25 RM Melvin Price Locks and Dam Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Alton RM Mel Price L&D RM Open River

11 L&D 25 Melvin Price Locks RM and Dam Flow Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Government Owned Flowage Easements Mel Price L&D RM Low Flow / Flat Pool

12 L&D 25 Melvin Price Locks RM and Dam Flow Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Government Owned Flowage Easements Mel Price L&D RM Increasing / Decreasing Flow

13 L&D 25 Melvin Price Locks RM and Dam Flow Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Government Owned Flowage Easements Mel Price L&D RM Maximum Drawdown

14 L&D 25 Melvin Price Locks RM and Dam Flow Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Grafton RM Government Owned Flowage Easements Mel Price L&D RM Open River

15 Hinge Point Limits Lock and Dam 24 Pool Limits: Hinge Point Limits, Louisiana: (May be exceeded if at maximum drawdown) Lock and Dam 25 Pool Limits: Hinge Point Limits, Mosier Landing: (May be exceeded if at maximum drawdown) Melvin Price Locks and Dam Pool Limits: Alton Lower Limit: Hinge Point Limits, Grafton: (May be exceeded if at maximum drawdown, or Alton at 414.0) Kaskaskia Lock and Dam Pool Limits: Hinge Point, Red Bud:

16 Low Water Operations

17 Critical Link Mississippi River 19-NOV ~ 35,200 cfs Illinois River 19-NOV ~ 4,000 cfs Missouri River 19-NOV ~ 48,700 cfs Mississippi St. Louis 15-NOV ~ 79,100 cfs Citi Critical llink

18 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

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

20 Mel Price Low Operations Actual W/O Mel Price Deviation Avoided daily 1-2 ft fluctuations Prevented St. Louis from dropping to -4.6

21 Middle Mississippi River Extended Forecast

22 Daily Record Lows : 34 days POR: 14 days Record Low : -5.2 ft (Dec 1989) POR: -6.2 ft (Jan 1940) Extended Forecast Dec-Feb Low ~ -7.0 to -6.5 ft

23 Daily Record Lows : 13 days POR: 8 days Record Low : -3.7 ft (Dec 1989) POR: -4.3 ft (Jan 1964) Extended Forecast Dec-Feb Low ~ -4.3 to -3.8 ft

24 Daily Record Lows : 43 days POR: 10 days Record Low : 1.3 ft (Dec 1989) POR: -0.2 ft (Jan 1940) Extended Forecast Dec-Feb Low ~ -0.4 to 0.1 ft

25 Daily Record Lows : 12 days POR: 5 days Record Low : 1.3 ft (Dec 1989) POR: 0.6 ft (Jan 1909) Extended Forecast Dec-Feb Low ~ 1.5 to 2.0 ft

26 Daily Record Lows : 31 days POR: 27 days Record Low : 0.9 ft (Dec 1989) POR: 0.9 ft (Dec 1989) Extended Forecast Dec-Feb Low ~ -0.1 to 0.4 ft

27 River Ice Gorging g

28 Reservoir Operations

29 Reservoirs Lake Shelbyville Mark Twain Lake Illino ois River Carlyle Lake Wappapello Lake Rend Lake

30 Control Points Mark Twain Lake LOUISIANA, MO Releases are restricted when the Mississippi River is at or above Flood Stage: Louisiana 15 ft St. Louis 30 ft ST. LOUIS, MO

31 Control Points Mark Twain Lake LOUISIANA, MO Project Purposes: Flood control, hydropower, water supply, fish and wildlife, and recreation Travel Time Louisiana ~ 1 day St. Louis ~ 2-3 days Thebes ~ 4-5 days ST. LOUIS, MO

32 Control Points Releases are restricted when the Mississippi River is at or above Flood Stage: Chester 27 ft Cape p Girardeau 30 ft Cairo 40 ft Lake Shelbyville Carlyle Lake CHESTER, IL CAPE GIRARDEAU, MO CAIRO, IL

33 Control Points Project Purposes: Flood Control, recreation, water supply, water quality enhancement, navigation, & fish and wildlife Travel Time Chester ~ 3 days Cape Girardeau ~ 4 days Thebes ~ 4-5 days Cairo ~ 6 days CHESTER, IL Lake Shelbyville Carlyle Lake CAPE GIRARDEAU, MO CAIRO, IL

34 Low Water Reference Plane

35 Low Water Reference Plane Hypothetical Reference Used as a design tool for dredging and construction Helpful reference for preparation for low water Main guide: o LWRP = -3.5 ft at St. Louis gage

36 ???Questions????????