Flooding Issues By Jim Blackburn New Non-Profit Formed Dedicated - - PowerPoint PPT Presentation

▶
flooding
SMART_READER_LITE
LIVE PREVIEW

Flooding Issues By Jim Blackburn New Non-Profit Formed Dedicated - - PowerPoint PPT Presentation

Nov 17, 2022 208 likes •682 views

Overview of Precinct 2 Flooding Issues By Jim Blackburn New Non-Profit Formed Dedicated to Designing a Flood- Resilient Houston And Calling Out The Truth bcinitiative.org Candidate Forum, June 29 ---- 2-4 p.m., Leonel Castillo Community

slide-1
SLIDE 1

Overview of Precinct 2 Flooding Issues By Jim Blackburn

slide-2
SLIDE 2

New Non-Profit Formed Dedicated to Designing a Flood- Resilient Houston And Calling Out The Truth

bcinitiative.org

Candidate Forum, June 29 ---- 2-4 p.m., Leonel Castillo Community Center, 2101 South Street, Houston 77009

slide-3
SLIDE 3

Political Flood Literacy

slide-4
SLIDE 4

City Council Districts

slide-5
SLIDE 5

United States Representative Districts

slide-6
SLIDE 6

Texas Senatorial Districts

slide-7
SLIDE 7

Texas House Districts

slide-8
SLIDE 8
  • PCT. 2

HARRIS COUNTY COMMISSIONER

Watersheds

HARRIS COUNTY

slide-9
SLIDE 9 5,000 10,000 15,000 20,000 25,000 30,000 Brays Bayou Buffalo Bayou Greens Bayou Cypress Creek Sims Bayou Addicks Clear Creek San Jac W Fk White Oak Armand Vince Ship Channel Cedar Bayou Barker sp gu goose remainder

Homes Flooded

slide-10
SLIDE 10

39,349 45,890 347,334 295,694 88,895 433,250 444,602 717,198 284,727 164,172 528,720 75,908 57,249 89,753 127,350 197,570 36,878 7,689 14,014 52,386 14,952

100,000 200,000 300,000 400,000 500,000 600,000 700,000 800,000
slide-11
SLIDE 11
slide-12
SLIDE 12

Obsolete

slide-13
SLIDE 13
slide-14
SLIDE 14
slide-15
SLIDE 15
slide-16
SLIDE 16
slide-17
SLIDE 17
slide-18
SLIDE 18
slide-19
SLIDE 19

Be Honest Addicks- Barker Failure Impact Zone

slide-20
SLIDE 20
slide-21
SLIDE 21
slide-22
SLIDE 22
slide-23
SLIDE 23
slide-24
SLIDE 24
slide-25
SLIDE 25

EVACUATION ZONES

PCT 2 EVAC ZONES ZONE A (in Pct 2): 10,814 Ac ZONE B (in Pct 2): 79,688 Ac ZONE C (in Pct 2): 142,326 Ac

Pct 2

LAND 357,863 Ac EVAC ZONES 232,828 Ac 65% Evac Zone

slide-26
SLIDE 26

This surge information marker was located in Precinct 2 after Ike and then removed – why?

slide-27
SLIDE 27

HGAPS Track Evaluation

slide-28
SLIDE 28

Reasonable Future Hurricane Surge Event Ike Plus 15% Approximately 20 foot surge at the coast 25 Foot Surge Up the Ship Channel

slide-29
SLIDE 29

Ultrahazardous Chemical Plant Electrical Grid Knocked Out By Hurricane Secondary Generators Flooded – Major Release Occurred

slide-30
SLIDE 30

Tanks At Risk From 25’ Surge

slide-31
SLIDE 31

Spill Volumes for Different Scenarios

slide-32
SLIDE 32

Deep Deepwater ter Horiz Horizon

  • n – 21

210 Mill 0 Mill Gall Gallon

  • ns

s of

  • f O

Oil il Exx Exxon

  • n Vald

aldez ez – 10 10 Mill Mill Gallons Gallons Of Of Oil Oil 25’ Surge – 90 90 Mil Mill l Gal Gal of

  • f Oil

Oil an and Hazar d Hazardo dous us Subst Substan ance ces

slide-33
SLIDE 33
  • PCT. 2

HARRIS COUNTY COMMISSIONER 0 – 25 FT ELEVATION SURGE ZONE LAND 357,863 Ac 0 – 25-Ft SURGE 123,390 Ac (34 %)

  • Pct. 2

STORM SURGE

slide-34
SLIDE 34

Red = 20 foot surge Harris Galveston County Vulnerable Coastal Area

slide-35
SLIDE 35

Regional Storm Surge Reduction Strategies

Phase III: HGAPS Lower-Bay Gate

slide-36
SLIDE 36

Evaluation of Strategies: Lower-Bay Gate

Phase III: HGAPS Surge Evaluation

Ike+15% maximum water elevations for p7 landfall (a) “Without” Lower-Bay and (b) “With” Lower-Bay Surge Protection Strategy (levee and gate features shown in dark black lines)

a) Ike+15%, p7, Baseline b) Ike+15%, p7, Lower-Bay

slide-37
SLIDE 37

Mid-Bay Gate

  • Gate placed in middle of

Galveston Bay

– Provides protected measures to most populated regions and the HSC – Able to capture chemicals from spills – Location in shallow water will likely allow for enhanced operation during storm events

Regional Storm Surge Reduction Strategies

Phase III: HGAPS Mid-Bay Gate

slide-38
SLIDE 38

Regional Storm Surge Reduction Strategies

Phase III: HGAPS Mid-Bay Gate

slide-39
SLIDE 39

Evaluation of Strategies: Mid-Bay Gate

Phase III: HGAPS Surge Evaluation

a) Ike+15%, p7, Baseline b) Ike+15%, p7, Mid-Bay

Ike+15% maximum water elevations for p7 landfall (a) “Without” Mid-Bay and (b) “With” Mid-Bay Surge Protection Strategy (levee and gate features shown in dark black lines)

slide-40
SLIDE 40

Phase III: Funding Source???

Baseline Conditions Lower Bay Mid Bay Upper Bay Industrial Damages $37.0 B $0 $0 $0 Residential Damages $8.9 B $1.5 B $2.5 B $4.8 B Total Damages $45.9 B $1.5 B $2.5 B $4.8 B Reduced Damages (Benefit)

  • $44.4 B

$43.4 B $41.1 B Cost

  • $7.6 B

$2.8 B $2.8 B

slide-41
SLIDE 41 H-GAPSPlan Houston-Galveston Area Protection System SSPEED CENTER WALTER P.MOORE

ROGE RS PART NERS HR& A ADVI SORS

The Archipelago

  • f Access
slide-42
SLIDE 42

Slide Courtesy of Anne Loes Nillesen

Maeslan t Barrier

slide-43
SLIDE 43

Ik Ike Plus e Plus 15% W 15% With ith The he “Archipelag

  • of
  • of

Access” In Place Place

slide-44
SLIDE 44 Slide by Rogers Partners for SSPEED Center
slide-45
SLIDE 45 Slide by Rogers Partners for SSPEED Center
slide-46
SLIDE 46 Slide by Rogers Partners for SSPEED Center
slide-47
SLIDE 47

As a Safety Valve, Why Not Start Permitting On the Archipelago

  • f Access

Today?

Core Hubs:
All Converters PDF Hub Video Hub Audio Hub Image Hub File Compressor