2/22/2016 SCVWD, Flood Preparedness, and Hazard Mitigation CADRE - - PDF document

2/22/2016 1 SCVWD, Flood Preparedness, and Hazard Mitigation

CADRE County F lood Pr e par e dne ss Wor kshop F e b rua ry 23, 2016

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Presentation Outline

Santa Clara Valley Water District Introduction Critical Infrastructure

Drinking Water Supply Infrastructure Storm and Tidal Water Infrastructure

Hazards and Cascading Effects Flood Preparedness Activities Emergency Response Capabilities Hazard Mitigation (LHMP)

SCVWD – Intro, Infrastructure, Hazards, Cascading Effects, Response Capabilities

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SCVWD: I ntro duc tio n

Sa nta Cla ra Co unty 1 o f 9 Co untie s tha t b o rde r SF Ba y 15 Citie s 1.9 Millio n Pe o ple 17.7 Billio n GDP

Sa nta Cla ra Co unty: Ge o -Po litic a l Co nte xt

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E stre me ra Vare la Sa ntos L e Zotte Ke e gan Kre me n

SCVWD: I ntro duc tio n

Governance: Elected Board of Directors and District Boundaries

Hse uh

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SCVWD Introduction

Santa Clara Valley Water District Act

Creates SCVWD and Governing Body Board of Directors Establishes Boundaries: all the territory of the County of Santa Clara Purposes and Powers: comprehensive water management for all beneficial uses and protection from tidal and stream floodwater. Protect highways; life & property; watersheds and watercourses.

Board Policy

Reliable, Clean Water Supply Natural Flood Protection Water Resources Stewardship

SCVWD Intro: Authority, Purpose, and Policy

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SCVWD - Critic a l I nfra struc ture

Presidential Policy Directive 21 identifies 16 Critical Infrastructures that underpin American Society a nd who se

a sse ts, syste ms, a nd ne two rks… a re c o nside re d so vita l to the Unite d Sta te s tha t the ir inc a pa c ita tio n o r de struc tio n wo uld ha ve a de b ilita ting e ffe c t o n se c urity, na tio nal e c o no mic se c urity, na tio na l pub lic he a lth o r sa fe ty, o r a ny c o mb inatio n the re o f.

SCVWD CIKR: Build, Own, Operate, Maintain/Stabilize Dams Sector Energy Sector Water and Wastewater Systems Cascading Impacts to other Sectors (Transportation)

SCVWD Infrastructure: Critical Infrastructure that Underpins American Society

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SCVWD - I nfra struc ture

SCVWD CIKR: Water Supply Syste m

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SCVWD Water Supply Infrastructure Map

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Water Supply Syste m – WT Ps

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3 WTPs - 220 MGD SVAWPC -10 MGD 13 Major Water Retailers

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Water Supply Syste m – Pumping Pla nts a nd Pipe line s

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3 Pump Stations 142 miles of Distribution Pipeline

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Dams (also part of our water supply syste m)

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10 Reservoirs

• Total Capacity: 169,000 AF
• Restricted Capacity: 123,000 AF
• Current Storage: 55,000 AF
• 330 Square Miles of Watershed Above Reservoirs where

precipitation is high

• 960 Square Miles of Watershed Below Reservoirs where

precipitation is low

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Dams (also part of our water supply syste m)

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Anderson Dam

• Capacity: 90,000 AF
• Restricted: 62,000 AF
• Current: 32,000 AF
• Length: 7.8 Miles
• Height: 240 Feet
• Seismic Retrofit to

begin in FY17

Anderson Dam and Reservoir

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Dams (also part of our water supply syste m)

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• Capacity: 19,000 AF
• Restricted: N/A
• Current: 3,300 AF
• Length: 2.5 Miles

Lenihan Dam and Lexington Reservoir

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SCVWD – Wa te r Supply I nfra struc ture

SCVWD CIKR: Dams (also part of our water supply syste m)

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• Capacity: 3,415 AF
• Restricted: 2,218 AF
• Current: 1,000 AF

Guadalupe Dam and Reservoir

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SCVWD: F lo o d Co ntro l I nfra struc ture

800 Miles of

Managed Creeks

200 Miles of

Creek Ownership

100,000

parcels protected

66,000

parcels less protected SCVWD CIK R: Da ms, L e ve e s, T ide Ga te s, Wa te r Re te ntio n & Co ntro l F a c ilitie s

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Engineered Channels: Guadalupe River

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SCVWD: F lo o d Co ntro l I nfra struc ture

Elevated Levees and Flood Walls Coyote Creek

SCVWD CIK R: Da ms, L e ve e s, T ide Ga te s, Wa te r Re te ntio n & Co ntro l F a c ilitie s

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SCVWD: F lo o d Co ntro l I nfra struc ture

Tide Gates

SCVWD CIK R: Da ms, L e ve e s, T ide Ga te s, Wa te r Re te ntio n & Co ntro l F a c ilitie s

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• Earthquakes:
• Largest Financial Losses in CA
• 99% chance of > 6.7 quake in CA over the next 30 years
• Dam and Levee Failures:
• 9 Dam failures in CA since 1950s,
• 140 Levee failures in Central Valley last 10 years.
• Floods:
• 2nd most disaster proclamations in CA
• 2nd largest financial losses in CA

Ha za rds

Prepare and respond effectively to… emergencies

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Ha za rds: Dro ug hts & L a nd Sub side nc e

Ha za rds: Dire c t Impac ts

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T his is Ca lifo rnia ’ s wo rst dro ug ht in r

e c or de d histor y

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Ha za rds: E a rthq ua ke

Ha za rds: Ca sc a ding E ffe c ts: Da m F a ilure Inundatio ns

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Da m F a ilure I nunda tio n Are a (Ande rso n Re se rvo ir)

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Ha za rds: L a rg e Sto rms

Hurric ane Patric ia: 10/ 23/ 15

Stro ng e st Hurric a ne E ve r Re c o rde d 200 mph susta ine d winds

Ha za rds: Dire c t I mpa c ts

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Ha za rds: Cre e k F lo o ding due to Sto rms

Ha za rds: Dire c t Impac ts

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Ha za rds: Cre e k & T ida l F lo o ding

66,000 pa rc e ls in 1% F lo o dpla in

Ha za rds: Ca sc a ding E ffe c ts…. F E MA 1% flo o d pla in ma p (sto rm a nd se a le ve l)

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Board of Directors: District 1 – Dennis Kennedy District 2 – Barbara Keegan District 3 ‐ Richard Santos District 4 – Linda J. LeZotte District 5 – Nai Hsueh District 6 – Tony Estremera District 7 – Gary Kremen

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Ha za rds: Cre e k & T ida l F lo o ding

Ha za rds: Ca sc a ding E ffe c ts: 1% sto rm a nd Se a L e ve l F lo o dpla in

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Co mple te d a nd Ide ntifie d F lo o d Pro te c tio n CIPs

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SCVWD: F

lo o d Pre pa re dne ss / Infra struc ture Ma inte na nc e

Preserve flood conveyance capacity: Sediment & Vegetation Removal

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Stream Maintenance

Before After

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Preserve flood conveyance capacity: Levee Inspections, Bank Repair/Stabilization

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SCVWD: F

lo o d Pre pa re dne ss / Infra struc ture Re pa ir

Before After During After

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Infrastructure Systems: Stabilization of Critical Infrastructure

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SCVWD: F

lo o d Pre pa re dne ss / Sa ndb a g Sta tio ns

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National Response Framework Capabilities

• Operational Coordination
• Operational Communications
• Public Information and Warning
• Situational Awareness
• Infrastructure Systems

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Prepare and respond effectively to… emergencies

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SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

E OC Dire c to r Ops F ire L a w Ca re & She lte r C&E Utilitie s L

• g s

Pla ns F ina nc e

Ma na g e me nt Sta ff

ESF: Public Works and

Engineering

CaEF: Construction and

Engineering Utilities

OA:

PW&E, C&E, and/or Utilities Branch

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Operational Coordination: External Agency Perspective

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Inte r-Ag e nc y E ng a g e me nt

Pla nning & Info rma tio n Op Are a : E MA, OAS, OAC, Winte r Wor kshop Wa te rshe ds: SF C, Pa ja ro , Gua da lupe E ve nts: Supe r Bo wl 50 E xe rc ise s Urb a n Shie ld SCC OA F lood T T X SF C MAC T T X

SCVWD

EOC

Muni (SCC)

EOC

SCC

OA

Muni (SMC)

EOC

SMC

OA REOC

SCVWD

DOC

SCVWD

CP

SCVWD

CP SOC

Muni (SCC)

CP Operational Coordination: SEMS Levels

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

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SEMS ICS MACs Mutual Aid Op Area Concept

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3.2.3. Prepare and respond effectively: Operational Coordination

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Operational Coordination: Management, Command, and Coordination Structures necessary to execute core capabilities

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Operational Communications and Public Information and Warning: The interoperable voice and data infrastructure necessary to ensure timely communication between response levels and affected populations.

• RESPONDERS:

Phone, Radios, Internet

• PUBLIC:

AlertSCC and IPAWs (via SCC OES)

Operational Communication and Public Information and Warning

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

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Situational Awareness: Decision-relevant Information

• Forecast monitoring
• Stream and Precipitation Gages, Cameras – remote measurements
• Flood modeling – forecast mapping

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Situational Awareness: Flood Forecast Mapping

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SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

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Situational Awareness: Fit Teams

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Infrastructure Systems: Creek Channels and Levees Decrease and stabilize immediate infrastructure threats; Re-establish critical infrastructure within the affected areas. Creek and Levee Response Activities

• Blockage Removal / “Hot Spot” Inspection and Maintenance
• Repair/Stabilize Levees and Creek Banks
• Flood Flow Diversions
• Sandbag deployment
• Bladder Dam
• Pump Deployment

SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Infrastructure Systems: Stabilization of Critical Infrastructure

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SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s Reservoir Operations

330 Square Miles of Watershed Above Reservoirs where precipitation is high 960 Square Miles of Watershed Below Reservoirs where precipitation is low Releases Managed by DSOD and Rule Curves Provides Incidental Flood Protection

Infrastructure Systems: Stabilization of Critical Infrastructure

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F lo o d E me rg e nc y Re spo nse : Blo c ka g e Re mo va l

Sa n F ra nc isq uito Cre e k a t Ba ysho re a nd Hwy 101 De c e mbe r 03, 2012

Infrastructure Systems: Stabilization of Critical Infrastructure

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SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Infrastructure Systems: Stabilization of Critical Infrastructure

Blo c ka g e Re mo va l

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Ba nk Sta b iliza tio n SCVWD – E

me rg e nc y Re spo nse Ca pa b ilitie s

Infrastructure Systems: Stabilization of Critical Infrastructure

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Hazard Mitigation Planning - Outreach

SURVE Y: http:/ / www.valle ywate r .or g/ pr

• gr

a ms/ L HMP.aspx Hazar d Awar e ne ss/ Disaste r Pr e par e dne ss

Santa Clar a County Re side nt / Wor ke r Santa Clar a County Re side nt

Mitigation Planning E ngage me nt Oppor tunitie s

SCVWD – Local Hazard Mitigation Planning

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2/22/2016 14 QUESTIONS

Dale Jacques, djacques@valleywater.org

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