MVD 2012 Flood Season Preparedness Regional Workshop
Transcript of MVD 2012 Flood Season Preparedness Regional Workshop
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US Army Corps of Engineers BUILDING STRONG®
MVD 2012 Flood Season Preparedness Regional Workshop
Identifying, Managing, and Communicating Risk
23 February
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Scope:
MVD 2012 Flood Season Preparation
Move forward with priority activities prior to the next flood season (30 March
2012) to mitigate risks caused by 2011 flood damages to the MR&T and
other Mississippi Valley flood risk reduction projects.
Focus: Build on ongoing Corps District efforts to regionally:
Identify key risks in the Mississippi River Valley
Establish how risks will be addressed
Effectively communicate this information to partners and stakeholders
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Preparedness Workshop
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MVD Flood Season Preparedness Regional Workshop:
- Part of the Corps ongoing risk communication efforts.
Risk = probability x consequences
- Identify, manage, and communicate elevated system risks with regional tools and through District case studies. - Goal: Improve preparedness and risk management through enhanced communication.
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MVD 2012 Flood Season Preparedness
How do the 2011 flood damages increase risk? Which damaged sites are the most concern? Can some levees not pass another 2011 event? What are the potential consequences? What is the plan for repairing damages? What do we do in the interim? How do we best communicate the risks?
Key Questions:
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US Army Corps of Engineers BUILDING STRONG®
MVD 2012 Flood Season Preparedness Identifying and Characterizing Increased Risks due to Damages from 2011 Flood
Jeff Stamper, P.E. Joey Windham, P.E. 23 February 2012
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MVD 2012 Flood Season Preparedness
How do the 2011 flood damages increase risk? Which damaged sites are the most concern? Can some levees not pass another 2011 event? What are the potential consequences? What is the plan for repairing damages? What do we do in the interim? How do we best communicate the risks?
Key Questions:
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How Did We Identify and Characterize Risks?
Find and inspect the damaged sites Assess the damaged condition at each site Assess the consequences Prioritize damages based on life safety and economic impacts Documentation: Risk Information Report Study levee damages on a system basis Estimate “System Level of Protection” for damaged system Estimate protected area inundation rate and depths
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Risk Information
Paper
• POC’s • Overview • Damages • Consequences • Considerations •Prelim Schedule
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Component A: How Likely is it that the Flood Event will Occur?
USACE Risk Framework
Component B: How Will the Infrastructure Perform during the Flood?
Component C: What are the Consequences for Non-Performance? • Life Safety • Economics • Environmental
What is Included in Risk?
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What’s Included in Risk? Components A and B - Probabilities
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Component A - Essentially the flood event such as the 1% flood. Created by rainfall and tempered by reservoirs and floodways.
Overtopping
Breach Prior to Overtopping
Component B - Damaged levees can fail prior to overtopping which transforms risk from a basis of gradual overtopping to a chance of sudden failure further increasing risks by potentially reducing warning time.
Flooding
Component B - For a levee that only fails due to overtopping, risk would be driven by the flood event chance of occurring.
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What’s Included in Risk? Component C - Consequences
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Economics: • Structures, infrastructure, property, and land production at increased risk • Timely info can allow opportunities to move personal property • Timely info can inform business decision to delay crop inputs, delay investment, or insure Environmental: • Fuels and chemicals - move/protect if possible • Operations of structures - modify to protect the environment
Life Safety: • Increased nearer the breach • Evacuation awareness can reduce risk • Personal preparation can reduce risk
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Identify the Sub-System Risks: East Bank Mississippi River Levee Damages
Sub-System Map removed
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Item
s
Site
Nam
es
FRA
GO
Cla
ssifi
cati
on
Init
ial L
ikel
ihoo
d of
Fa
ilure
Insp
ecti
on R
atin
g
Failu
re M
ode
Popu
lati
on a
t Ris
k
Non
- Res
iden
tial
St
ruct
ures
($10
00)
Resi
dent
ial S
truc
ture
s ($
1000
)
Tota
l All
Stru
ctur
es
($10
00)
1 Buck Chute 1 H U Seepage 3996 31,141 157,396 188,537
2 Albemarle 1 H U Slope Stability 7656 72,963 274,488 347,451
3 Francis 2 M U Seepage 67,180 561,855 2,261,510 2,823,365
4 Winterville 2 M U Seepage 74,484 652,385 2,755,585 3,407,970
5 Yazoo, Rena Lara 2 M U Seepage 55,355 - - 4,058,941
6 Tara 2 M U Seepage 3996 31,141 157,396 188,537
7 Walnut Point 2 M M Channel, Bank
Erosion Assume same as Leota due to close proximity
Organizing the Risks to a Leveed Sub-System
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How Do We Reduce Risks? Create interim plans for a flood fight response to reduce
chance of failure
Use inundation rates and depths to inform evacuation procedures
Install repairs to incrementally reduce the chance of failure
Remain aware of system, sub-system, and the transferring of risk concepts while planning repairs
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Protected Area
Leveed Area defines a Sub-System
Highlandville
Lowlander Town
Gotham City
Studying Risks using a Sub-System Approach
Breach Scenario
Sites with Varying Damage
Inundation - 6, 12, and 24 hour rates
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Protected Area
Levee
Highlandville
Lowlander Town
Gotham City Sites with Varying Damage
Incremental Risk Reduction for a Sub-System
#1 Bird Beak Point PAR – 174,000 (within 24 hours) Economics - $5B (10 days inundation)
#2 Senator Byrd’s Point PAR – 14,000 (within 24 hours) Economics - $3B (10 days inundation)
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MVD 2012 Flood Season Preparedness
How do the 2011 flood damages increase risk? Which damaged sites are the most concern? Can some levees not pass another 2011 event? What are the potential consequences? What is the plan for repairing damages? What do we do in the interim? How do we best communicate the risks?
Key Questions:
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Level of protection map
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Inundation Map removed
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Inundation Maps
General Maps - produced using daily and forecasted stages that can be found on National Weather Service gages throughout the impacted area
High Level Maps - sensitive information and are produced using assumptions concerning breach conditions and stages at an area of interest
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General Maps
Inundation Map removed
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General Maps
Inundation Map removed
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General Maps
Inundation Map removed
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High Level Maps
Inundation Map removed
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Inundation Mapping Challenges -Standardization
oHydraulic Modeling Assumptions oScale o Depth Interval o Datum o Templates o Modeling Assumptions
-Consistency Across District Boundary -Level of Distribution
oInternal oPartnering Agencies oPublic
-Method of Distribution oEmail Distribution oFormat of Data, ex. Shapefiles oCorps Website
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QUESTIONS?
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US Army Corps of Engineers BUILDING STRONG®
MVD 2012 Flood Season Preparedness Risk Management
Ben Robinson Joan Stemler 23 February
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BUILDING STRONG®
MVD 2012 Flood Season Preparedness
How do the 2011 flood damages increase risk? Which damaged sites are the most concern? Can some levees not pass another 2011 event? What are the potential consequences? What is the plan for repairing damages? What do we do in the interim? How do we best communicate the risks?
Key Questions:
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MVD 2012 Flood Season Preparedness
Construction
What is the plan for repairing damages?
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MVD 2012 Flood Season Preparedness
What is the plan for repairing damages?
Modified operations
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Reservoir Operations MVD
• Little snow pack and reservoirs are near target elevations • Have taken measures early on to proactively increase storage
NWD • Aggressive releases and favorable weather conditions have resulted in
greater storage available than this time last year. LRD
• Authority to use storage as seen fit in both Kentucky and Barkley; plan is to use storage up to 370 to protect BP/NM to a Cairo stage of 55 feet; if the floodway overtops, the remaining 3 feet of practical storage will be used to protect the MR&T levees. We found we can't use all 5 feet due to Kentucky lock construction and gate vibration issues under surcharge.
SWD Reservoirs are all in good shape to perform as designed for the upcoming
flood season. A few lakes are much below top of conservation elevations due to the ongoing drought
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MVD 2012 Flood Season Preparedness
Flood fight preparations
What do we do in the interim?
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MVD 2012 Flood Season Preparedness What do we do in the interim?
Interim measures
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Risk Mitigation Papers Summary Report Communications Plan
Risk Management Products
Risk Mitigation Paper Removed
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Risk Management Papers Summary Report Communications Plan
Risk Management Products
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Risk Management Papers Summary Report Communications Plan
Risk Management Products
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QUESTIONS?
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US Army Corps of Engineers BUILDING STRONG®
MVD 2012 Flood Season Preparedness Risk Communication
Gloria Piazza Tim Eagan 23 February
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MVD 2012 Flood Season Preparedness
How do the damages increase risk? Which damaged sites are the most concern? Can some levees not pass another 2011 event? What are the potential consequences? What is the plan for repairing damages? What do we do in the interim? How do we best communicate the risks?
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How do improve internal communications to better serve our external customers?
Division to Division, Division to District After Action and Damage Assessment Reports National Levee Database Use of inundation maps CorpsMap and Freeboard
► Use of Android phones for real-time data during flood fight
Risk Communication
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What did we learn from the 2011 flood? Post Flood Report – Communication Team
► Our partners want MAPS!
Risk Communication
Inundation Map removed
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What did we learn from the 2011 flood? Use of social media: Facebook, Youtube, Twitter
► Immediate responses to questions, press releases, links to other pages
Risk Communication
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Risk Communication
What did we learn from the 2011 flood? Emergency Management Web pages
► Served up additional support documents at a local level
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How are we communicating Increased Risk now? • CorpsMap – Fact sheets, info papers
CorpsMap Brochure – how to navigate
• Flood Season Preparedness web site • Regional Flood Risk Management
Workshop • Communication Plan – talking points, FSP
fact sheet, press releases, continue social media
Risk Communication
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Improving communication with partners Continue improvements to new products Policy and standards for map creation and
release Continue to update CorpsMap and websites How can we improve our communication efforts?
Future Risk Communication
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Risk Communication Web Sites MVD Home page: http://www.mvd.usace.army.mil Facebook page: http://www.facebook.com/CEMVD CorpsMap: http://geo.usace.army.mil/egis/cm2.cm26.map?map=MVD_OWS
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Web page and CorpsMap Demo
Tim Eagan
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QUESTIONS?