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byJustin Vandever, PE, AECOM Oakland

Darryl Hatheway, CFM, AECOM San Diego

CCAMP / OPC Study

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Agenda• FEMA Risk MAP and NFIP• Introduce CCAMP Open Coast Study• Process & Schedule of Studies• Coastal Data and Resources• Study Methods & Scope

Risk Mapping, Assessment and Planning (Risk MAP) Vision:To deliver quality data that increases public awareness and leads to action thatreduces risk to life and property

Address gaps in flood hazard dataEnsure public awareness through outreachLead and support hazard mitigation planningProvide an enhanced digital platformAlign risk analysis programs

FEMA will collaborate with federal, state,and local stakeholders to achieve thefollowing goals under Risk MAP:

Vision

Goals

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CaliforniaCoastal Analysis and Mapping Project

Open Pacific Coast Study

A Risk MAP project with a coastal focus

Re-study all Californiacoastal counties alongthe open Pacificcoastline.

Re-map the coastalflood, wave hazard,and associated risks.

CCAMP / OPC Study

www.r9coastal.org

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SF Bay | Open Coast

CCAMP / OPC Study - PhasesDel Norte

Humboldt

Mendocino

Sonoma

MarinSan FranciscoSan MateoSanta Cruz

Monterey

San Luis Obispo

SantaBarbara

Ventura

LosAngelesOrange

San Diego

Phase 1 (2010)Ten CountiesNorthern and CentralCalifornia Coast

Phase 2 (2012)Five Counties

SouthernCalifornia Coast

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MichaelBaker Jr.

AECOM

Objective:Determine newBFEs and floodextents

QA/QC

Discovery

DataAcquisition

EngineeringAnalyses

FloodplainMapping

MapProduction

Post-PreliminaryProcessing Fall-Winter 2014

CCAMP / OPC Study - Process

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Where we are right now:

• Scoping Meetings(Kick-off Meetings,Field Recon, Outreach)

• Data Acquisition(LIDAR, Tide Records,Offshore Waves,Bathymetry)

• Engineering Analyses(Wave Setup, DuneErosion, Wave Runup)

O U

T R

E A

C H

T A

P R

E V

I E

W

CCAMP / OPC Study – Schedule

Initial Kick-Off Meeting March-May 2011Field Reconnaissance March-May 2011Engineering Analysis Now through Fall 2012Floodplain Mapping Summer 2012 – Spring 2013Preliminary Map Production Winter 2013 – Fall 2013Post-Preliminary Processing Summer 2013 – Fall 2014

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Apply “Final Draft Guidelinesfor Coastal Flood hazardAnalysis and Mapping for thePacific Coast of the UnitedStates”(dated Jan. 2005)

• Phase 1 – Central &Northern CA(10 coastal counties)• Phase 2 – Southern CA(5 coastal counties)

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Don’t be fooled! Coastal flood analysis dates to early 1980s

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Copyright © 2009 California Seafloor Mapping Project

Fugro © 2005

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http://seafloor.csumb.edu/csmp/csmp.html

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Bodega Bay Other Sources:• Coastal Commission• UC Santa Cruz• USGS• CSMW

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http://www.californiacoastline.org/

Photography and website Copyright ©2002-2010 Kenneth & Gabrielle Adelman

Others: bing.com

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OWI NOAA

Scripps

Transect-basedanalysis

UW

BakerAECOM

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• Deepwater Waves:OceanWeather Inc. (50-yeardeepwater wave hindcast 1960-2010)• Nearshore WaveTransformation: ScrippsInstitution of OceanographyMOnitoring and Prediction(MOP) System

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• Global Reanalysis of Ocean Waves(GROW) Model• Nested model grids• Spectra archive/output points at coast

Andrew CoxVince Cardone

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Study Methods:Study Methods:Nearshore Wave TransformationNearshore Wave Transformation

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“Changes in wave characteristicsas waves propagate fromdeepwater to shallow water”

• Nearshore bathymetry changeswave height and direction•Flooding at the shoreline notcompletely described by deepwaterwaves• Need mechanism to transformwave spectra from deepwater toedge of surf zone

Study Methods:Study Methods:Coastal Data Information Program (Scripps)Coastal Data Information Program (Scripps)

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Study Methods:Study Methods:MOPMOP NearshoreNearshore Wave Prediction Sites (Scripps)Wave Prediction Sites (Scripps)

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Julie ThomasBill O’ReillyMichele OkihiroCorey Olfe

Datawell Directional Waverider

Study Methods:Study Methods:Coastal Data Information Program (Scripps)Coastal Data Information Program (Scripps)

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PreviousPrevious NorCalNorCal Study Methods:Study Methods:OttOtt Water Engineers (1984) StudyWater Engineers (1984) Study

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12!

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• 1-D Transect-based wavehazard analyses

• Wave Setup• Wave Runup• Wave Overtopping• Overland Waves• Dune & Bluff Erosion

• Extreme value analysis ofannual maxima of computedtotal water levels

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Dune Erosion:Komar geometricmodel with K&Dtime response factor

Bluff Erosion:Probabilistic cliff failure?Data needs…

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Static Setup = 2.8 ft

Dynamic Setup = 2.9 ft

• 1%-annual-chance (baseflood) and 0.2% total waterlevel floodplains

• Mapping of coastal hazardzones and BFEs (andprimary frontal dune VEZones)

•• (Sea level rise and long(Sea level rise and long--term shoreline changeterm shoreline changenot included at this time)not included at this time)

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LiMWA

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The end product:

H2O May 26, 2011www.r9coastal.orgwww.r9coastal.org

Questions?Questions?

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Big Sur River, Andrew Molera State Park