Flood Emergency Action Plan

Total Page:16

File Type:pdf, Size:1020Kb

Flood Emergency Action Plan FLOOD EMERGENCY ACTION PLAN July 2016 Version 1.0 Peninsula Drainage District #1 Peninsula Drainage District #2 Multnomah County Drainage District #1 Sandy Drainage Improvement Company 1880 NE Elrod Drive - Portland, Oregon 97211 - www.mcdd.org - 503-281-5675 FLOOD EMERGENCY ACTION PLAN July 2016 Version 1.0 Peninsula Drainage District #1 Peninsula Drainage District #2 Multnomah County Drainage District #1 Sandy Drainage Improvement Company 1880 NE Elrod Drive - Portland, Oregon 97211 - www.mcdd.org - 503-281-5675 Record of Distribution This Plan has been distributed to the following parties: 1. Multnomah County Emergency Management 2. Multnomah County Department of Community Services 3. Multnomah County Sheriff’s Office 4. City of Portland Bureau of Emergency Management 5. Port of Portland Emergency Manager 6. Port of Portland Water Quality Division 7. US Army Corps of Engineers Readiness Division 8. City of Gresham Emergency Manager 9. City of Fairview Public Works 10. City of Troutdale Emergency Manager 11. Riverside Golf Course and Country Club 12. Graphic Packaging 13. Oregon Department of Transportation, Region 1 Emergency Management 14. Oregon Department of Transportation, Region 1, Section 2B, North Portland Precinct 15. Oregon Department of Transportation, Region 1, Section 2B, East Portland Precinct 16. Portland Bureau of Transportation 17. Portland Water Bureau Emergency Management 18. Portland Bureau of Environmental Services, Columbia Slough Watershed 19. Portland Parks and Recreation, Heron Lakes Golf Club 20. Portland Parks and Recreation, Portland International Raceway 21. National Weather Service Portland Forecast Office 22. Metro Emergency Manager 23. Expo Center Operations Manager 24. Peninsula Terminal Company 25. Union Pacific 26. Burlington Northern Santa Fe 27. Amtrak 28. Oregon Department of Environmental Quality 29. Oregon Office of Emergency Management 30. Trimet 31. FedEx 32. Jubitz Corporation 33. Columbia Edgewater Country Club 34. Special Districts Association of Oregon 35. Columbia Corridor Association 36. Columbia Slough Watershed Council 37. Pacific Power 38. Portland General Electric 39. Bonneville Power Administration 40. Boeing 41. Toyo Tanso USA 42. East Columbia Neighborhood Association 43. Bridgeton Road Neighborhood 44. Fairview Lake Property Owners Association Flood Emergency Action Plan – 2016 2 Record of Changes When changes are made to the Flood Emergency Action Plan, a record will be made to maintain version control. The following procedures should be followed immediately upon updating: 1. Any and all changes shall be recorded in the Change Log below. 2. The change will be distributed to partners and stakeholders on Page 2 under Record of Distribution. Version # Description of Change (Section #) Date Change by: / / / / / / / / / / / / / / / / / / / / Flood Emergency Action Plan – 2016 3 Table of Contents Record of Distribution ......................................................................................... 2 Record of Changes .............................................................................................. 3 1. Introduction .................................................................................................... 7 1.1. Purpose ................................................................................................................................ 7 1.2. Scope .................................................................................................................................... 7 1.3. Flood Management System Design ..................................................................................... 8 1.4. Situation Overview ............................................................................................................. 10 1.4.1. Assumptions ................................................................................................................ 11 1.4.2. Authority ..................................................................................................................... 11 1.4.3. Past Flood Events ........................................................................................................ 12 2. Safety and Security ....................................................................................... 15 2.1. Safety ................................................................................................................................. 15 2.2. Security .............................................................................................................................. 15 3. Concept of Operations .................................................................................. 17 3.1. Flood Emergency Triggers and Actions .............................................................................. 18 4. Organization, Roles, and Responsibilities ...................................................... 25 4.1. Organization ....................................................................................................................... 25 4.1.1. Enhanced Operations .................................................................................................. 25 4.1.2. Partial Emergency Activation ...................................................................................... 25 4.1.3. Full Emergency Activation .......................................................................................... 26 4.2. Emergency Response Staffing ............................................................................................ 26 4.3. Partnering Agency Assumptions and Responsibilities ....................................................... 27 5. Communications ........................................................................................... 31 5.1. Internal Communication Network ..................................................................................... 31 6. Flood Fighting and Resources ........................................................................ 33 6.1. Inspection ........................................................................................................................... 33 6.1.1. Levee Monitoring ........................................................................................................ 33 6.1.2. Areas with Risk Drivers ............................................................................................... 34 6.2. Resources and Supplies ..................................................................................................... 37 6.2.1. Personnel Requirements ............................................................................................ 37 6.2.2. Stockpiled Supplies and Available Equipment ............................................................ 38 6.2.3. Mutual Aid .................................................................................................................. 38 Flood Emergency Action Plan – 2016 4 6.2.4. Contractors and Vendors ............................................................................................ 39 6.2.5. Volunteer Management.............................................................................................. 39 7. Evacuation .................................................................................................... 41 7.1. City of Portland .................................................................................................................. 41 7.2. City of Gresham.................................................................................................................. 41 7.3. City of Fairview ................................................................................................................... 41 7.4. City of Troutdale ................................................................................................................ 41 7.5. Unincorporated Multnomah County ................................................................................. 41 8. Appendices ................................................................................................... 43 Appendix A: Drainage District Details ....................................................................................... 45 Appendix B: PEN 1 Floodwall Openings .................................................................................... 53 Appendix C: Levee System Areas with Risk Drivers .................................................................. 57 Appendix D: Inundation Maps ..................................................................................................61 Appendix E: Levee Modes of Failure Information ....................................................................95 Appendix F: District Emergency Declaration Process ...............................................................99 Appendix G: Legal Memorandum Regarding USACE Emergency Assistance ..........................101 Appendix H: Triggered Action Procedures .............................................................................. 129 Appendix I: Emergency Contacts ............................................................................................ 135 Appendix J: Situational Reporting ........................................................................................... 141 Appendix K: Position Action Sheets ........................................................................................ 147 Appendix L: Levee Inspection Guide ......................................................................................
Recommended publications
  • NOAA's National Weather Service Advanced Hydrologic Prediction
    NOAA’s National Weather Service Advanced Hydrologic Prediction Services How to implement the regional map inline frame ©2012 Office of Hydrologic Development/Office of Climate Water and Weather Service 2 Introduction NOAA’s National Weather Service (NWS) provides a wide variety of hydrologic and hydrometeorologic forecasts and information through the web. These web-based resources originate at NWS field, national center, and headquarters offices and are designed to meet the needs of a wide range of users from someone who needs the five-day forecast for a river near his home to the technically advanced water manager who needs probabilistic information to make long-term decisions on allocation of flood mitigation resources or water supply. The NWS will continue to expand and refine all types of web products to keep pace with the demands of all types of users. Hydrologic resources location The NWS Hydrologic resources can be accessed at https://water.weather.gov or by clicking the “Rivers, Lakes, ​ ​ Rainfall” link from https://www.weather.gov. ​ ​ Regional Map – River Observations and River Forecasts Figure 1: National View The regional AHPS map inline frame (or iframe, as it will be referenced throughout the rest of this document), as seen in figure 1, consists of several components: toggles to change which gauge markers display on the map; ESRI map controls; flood status indicators and location-based data view selectors. The starting point, which is available outside of the iframe component, is a national map providing a brief summary to the river and stream location statuses within the continental United States. From this national overview, you can navigate to specific 3 regions – state, Weather Forecast Office (WFO), River Forecast Center (RFC) and Water Resource Region (WRR) – by selecting an option by neighboring drop down menus or clicking on marker images on the map.
    [Show full text]
  • HOMELESSNESS in PORTLAND: a Meta-Analysis and Recommendations for Success
    HOMELESSNESS IN PORTLAND: A Meta-analysis and Recommendations for Success Published MAY 2019 The Citizens Crime Commission of Portland is the leading voice of public safety. We are a non-profit organization dedicated to mobilizing business leaders and citizens to reduce crime, improve civility, and strengthen communities. Our efforts are driven by four core initiatives: Uniting Leaders, Better Justice Systems, Looking Beyond the Symptoms, and Business Security. TABLE OF CONTENTS ACKNOWLEDGEMENTS 3 EXECUTIVE SUMMARY 4 FINDING AND RECOMMENDATION NO. 1 6 DEINSTITUTIONALIZATION 6 INCARCERATION 7 FOSTER CARE 8 LOW-INCOME HOUSING POLICY 9 FINDING AND RECOMMENDATION NO. 2 13 WHO ARE THE HOMELESS? 13 WHAT IS BEING DONE? 16 FINDING AND RECOMMENDATION NO. 3 21 FINDING AND RECOMMENDATION NO. 4 23 FINDING AND RECOMMENDATION NO. 5 26 FINDING AND RECOMMENDATION NO. 6 28 VILLAGES: AN INTERIM SOLUTION TO PORTLAND’S CRISIS OF HOMELESSNESS? 30 FINDING AND RECOMMENDATION NO. 7 33 THE PROMISE OF HEALTH CARE REFORM 36 FUNDING THE SUPPORTIVE COMPONENT OF PERMANENT SUPPORTIVE HOUSING 37 APPENDIX 1: INTERVIEWEES AND MEETINGS ATTENDED 39 APPENDIX 2: RECOMMENDATIONS FROM OTHER REPORTS 40 APPENDIX 3: BIBLIOGRAPHY 45 This report has been produced by the Citizens Crime Commission. The view and opinions in this report do not necessarily represent the views and opinions of the individual members of the Crime Commission. ACKNOWLEDGEMENTS There have been any number of reports on homelessness nationally, regionally and here in Portland regarding the scope and scale of the challenge before us, and many excellent recommendations for how to successfully address the homelessness crisis. In keeping with the tradition of the Citizens Crime Commission, we have attempted herein to present a well-researched study that offers cost-effective recommendations for system improvement/ enhance- ment.
    [Show full text]
  • CITY of HUBER HEIGHTS STATE of OHIO City Dog Park Committee Meeting Minutes March 29, 2018 6:00 P.M
    Agenda Page 1 of 1 CITY OF HUBER HEIGHTS STATE OF OHIO City Dog Park Committee March 29, 2018 6:00 P.M. City Hall – 6131 Taylorsville Road – Council Chambers 1. Call Meeting To Order/Roll Call: 2. Approval of Minutes: A. March 22, 2018 3. Topics of Discussion: A. City Dog Park Planning and Discussion 4. Adjournment: https://destinyhosted.com/print_all.cfm?seq=3604&reloaded=true&id=48237 3/29/2018 CITY OF HUBER HEIGHTS STATE OF OHIO City Dog Park Committee Meeting Minutes March 29, 2018 6:00 P.M. City Hall – 6131 Taylorsville Road – City Council Chambers Meeting Started at 6:00pm 1. Call Meeting To Order/Roll Call: Members present: Bryan Detty, Keith Hensley, Vicki Dix, Nancy Byrge, Vincent King & Richard Shaw Members NOT present: Toni Webb • Nina Deam was resigned from the Committee 2. Approval of Minutes: No Minutes to Approval 3. Topics of Discussion: A. City Dog Park Planning and Discussion • Mr. King mentioned the “Meet Me at the Park” $20,000 Grant campaign. • Mr. Detty mentioned the Lowe’s communication. • Ms. Byrge discussed the March 29, 2018 email (Copy Enclosed) • Mr. Shaw discussed access to a Shared Drive for additional information. • Mr. King shared concerns regarding “Banning” smoking at the park as no park in Huber is currently banned. • Ms. Byrge suggested Benches inside and out of the park area. • Mr. Hensley and the committee discussed in length the optional sizes for the park. • Mr. Detty expressed interest in a limestone entrance area. • Mr. Hensley suggested the 100ft distance from the North line of the Neighbors and the School property line to the South.
    [Show full text]
  • Felixstowe Central and South
    Management Responsibilities SCDC: Fel 19.1 to Fel 19.3 SCDC Assets: Fel 19.1 Reinforced concrete block revetment with groynes, rock armour revetment in front of concrete wall, two fishtail breakwaters Fel 19.2 Concrete seawall with rock groynes, concrete splash wall, mass concrete seawall with promenade, timber groynes with concrete cladding Fel 19.3 Mass concrete sea wall with promenade, timber groynes with concrete cladding EA: Fel 19.4 to Fel 20.1 (with flood wall responsibility in SCDC frontages) EA Assets: Fel 19.2 / 19.3 Secondary flood wall Fel 19.4 Manor Terrace sea wall, concrete block-work revetment with toe piling, Landguard Common sea wall with concrete apron SMP Information Area vulnerable to flood risk: Approx. 7,017,000m² No. of properties vulnerable to flooding: 1071 Area vulnerable to erosion: Approx. 640,000m² (2105 prediction – no defences) No. of properties vulnerable to erosion: 111 Vulnerable infrastructure / assets: Felixstowe Leisure Centre, Bartlet Hospital, Felixstowe Docks, Martello Tower, Landguard caravan park, Harwich Harbour Ferry, Landguard Common, Landguard Fort, Orwell Estuary, Stour Estuary SMP Objectives To improve Felixstowe as a viable commercial centre and tourist destination in a sustainable manner; To protect the port of Felixstowe and provide opportunities for its development; To develop and maintain the Blue Flag beach; To maintain flood protection to residential properties; To maintain a high standard of ongoing defence to the area; To maintain existing facilities essential in supporting ongoing regeneration; To integrate maintenance of coastal defence, while promoting sustainable development of the hinterland; To maintain the historical heritage of the frontage; To maintain biological and geological features of Landguard Common SSSI in a favourable condition.
    [Show full text]
  • URBAN COASTAL FLOOD MITIGATION STRATEGIES for the CITY of HOBOKEN & JERSEY CITY, NEW JERSEY by Eleni Athanasopoulou
    ©[2017] Eleni Athanasopoulou ALL RIGHTS RESERVED URBAN COASTAL FLOOD MITIGATION STRATEGIES FOR THE CITY OF HOBOKEN & JERSEY CITY, NEW JERSEY By Eleni Athanasopoulou A dissertation submitted to the Graduate School- New Brunswick Rutgers, The State University of New Jersey In partial fulfillment of requirements For the degree of Doctor of Philosophy Graduate Program in Civil and Environmental Engineering Written under the direction of Dr. Qizhong Guo And approved by New Jersey, New Brunswick January 2017 ABSTRACT OF THE DISSERTATION URBAN COASTAL FLOOD MITIGATION STRATEGIES FOR THE CITY OF HOBOKEN & JERSEY CITY, NEW JERSEY by ELENI ATHANASOPOULOU Dissertation Director: Dr. Qizhong Guo Coastal cities are undeniably vulnerable to climate change. Coastal storms combining with sea level rise have increased the risk of flooding and storm surge damage in coastal communities. The communities of the City of Hoboken and Jersey City are low-lying areas along the Hudson River waterfront and the Newark Bay/Hackensack River with little or no relief. Flooding in these areas is a result of intense precipitation and runoff, tides and/or storm surges, or a combination of all of them. During Super-storm Sandy these communities experienced severe flooding and flood-related damage as a result of the storm surge. ii Following the damage that was created on these communities by flooding from Sandy, this research was initiated in order to develop comprehensive strategies to make Hoboken and Jersey City more resilient to flooding. Commonly used flood measures like storage, surge barrier, conveyance, diversion, pumping, rainfall interception, etc. are examined, and the research is focused on their different combination to address different levels of flood risk at different scales.
    [Show full text]
  • Community Open House
    Mayor Kasim Reed The Department of Watershed Management & Atlanta Memorial Park Conservancy Community Open House 10/28/2016 1 AGENDA: Meet & Greet Opening Remarks & Introductions – District 8 Council Member Yolanda Adrean – Department of Watershed Management, Commissioner Kishia L. Powell – AMPC Executive Director, Catherine Spillman – Memorial Park Technical Advisory Group members, other Civic Leaders and Officials Department of Watershed Management – Presentation Q&A Closing Remarks 10/28/2016 2 AMPTAG-DWM COLLABORATIVE The Atlanta Memorial Park Technical Advisory Group (AMPTAG) and the City of Atlanta’s Department of Watershed Management (DWM) are engaged in ongoing discussions and scheduled workshops associated with the following goals: 1. Eliminate wet weather overflows within and near Memorial Park and within the Peachtree Creek Sewer Basin; and 2. Protect water quality in Peachtree Creek 10/28/2016 3 EPA/EPD Consent Decrees 1995 lawsuit results in two (2) Consent Decrees • CSO Consent Decree (Sep 1998) – Project completion by 2008 (achieved) o Reduce CSOs from 100/yr. at each of 6 facilities to 4/yr. o Achieve water quality standards at point of discharge • SSO Consent Decree (Dec 1999) Project completion by 2027 (per amendment approved 2012) o Stop 1000+ annual sewer spills o Achieve a reliable sewer system o Implement MOMS plan 10/28/2016 4 Clean Water Atlanta: Overview • Responsible for the overall management of the City’s two Consent Decrees – CSO and SSO. • Charge is to address operation of the City’s wastewater facilities and address CSOs and SSOs within the city. • Responsible for planning, design, and construction of improvements to the City's wastewater collection system, as well as environmental compliance and reporting to comply with the Consent Decrees.
    [Show full text]
  • FRG17 Online-1.Pdf
    Tualatin Dance Center - 8487 SW Warm Krayon Kids Musical Theater Co. - 817 12th, ARTS & ENTERTAINMENT Springs, Tualatin; 503-691-2414; facebook.com. Oregon City; 503-656-6099; krayonkids.org. Musical theater featuring local children. ART GALLERIES in camps and classes, plus supplies for at-home projects. Ladybug Theater - 8210 SE 13th; 502-232- & EXHIBITS DRAMA / THEATER 2346; ladybugtheater.com. Wed. morning Vine Gogh Artist Bar & Studio - 11513 SW Pa- Northwest Children’s Theater performances for young children with audience Oregon Historical Society cific Hwy, Tigard; 971-266-8983; vinegogh.com. participation. and School Visit our new permanent exhibit History Public painting classes for all ages. Hub where families can explore the topic of NWCT produces award-winning children’s Lakewood Theatre Company - 368 S State, diversity through fun, hands-on interactives. Young Art Lessons - 7441 SW Bridgeport; 503- theater productions and is one of the largest Lake Oswego; 503-635-3901; lakewood-center. With puzzles, touch screen activities, and board 336-0611; 9585 SW Washington Sq; 503-352- theater schools on the West Coast. NWCT org. Live theater and classes for kids and adults. games, History Hub asks students to consider 5965; youngartusa.co. keeps the magic of live performance accessible questions like “Who is an Oregonian?,” and and affordable to over 65,000 families annually Portland Revels - 1515 SW Morrison Street; “How can you make Oregon a great place for with a mission to educate, entertain, and enrich 503-274-4654; portlandrevels.org. Seasonal everyone?” the lives of young audiences. performances feature song, dance, story and DANCE ritual of the past and present.
    [Show full text]
  • The Wilmington Wave National Weather Service, Wilmington, NC
    The Wilmington Wave National Weather Service, Wilmington, NC VOLUME III, ISSUE 1 F A L L 2 0 1 3 INSIDE THIS ISSUE: Summer 2013: Above Average Rainfall Summer 2013 1-2 - Brad Reinhart Rainfall If you spent time outside this summer, your outdoor activities were probably interrupted by Top 3 Strongest 3-5 rain at some point. Of course, afternoon showers and thunderstorms during the summertime Storms in Wilmington are fairly common in the eastern Carolinas. But, did you know that we experienced record rainfall totals, rising rivers, and flooding within our forecast area this meteorological summer Masonboro 6-8 (June – August 2013)? Here’s a recap of what turned out to be quite a wet summer. Buoy Florence, SC received the most rainfall (27.63’’) of our four climate sites during the months The Tsunami 9-12 of June, July, and August. This total was a staggering 12.53’’ above normal for the summer months. In July alone, 14.91’’ of rain fell in Florence. This made July 2013 the wettest Local Hail Study 12-13 month EVER in Florence since records began in 1948! Wilmington, NC received 25.78’’ of rain this summer, which was 6.35’’ above normal. North Myrtle Beach, SC and Lumberton, A Summer of 14 Decision NC received well over 20 inches of rain as well. Support Excess rainfall must go somewhere, so many of our local rivers rose in response to the heavy rain across the Carolinas. In total, 8 of our 11 river forecast points exceeded flood stage this summer. Some of these rivers flooded multiple times; in fact, our office issued 24 river flood warnings and 144 river flood statements from June to August.
    [Show full text]
  • 2014 Annual Report
    2014 Annual Report www.joinpdx.org 503.232.7052 Dear Friend & Supporter, Letter Relationship and community…. from the Director these are words you will hear often at JOIN. I have had the privilege of being a part of the JOIN communi- ty for 7 years—fi rst as a community partner, then as a Board member, later a staff member, and now as the 2015 Board of Directors Executive Director. Chris Bonner, President There is one story that brings home the point of what JOIN really Hasson Company means about building relationships and cultivating community. John and I fi rst met when I was working at JOIN’s Basic Service Margaret Bryant, Vice President Center, or what we call the “House.” He had been sleeping outside Bryant Garcia Benefi t Consultants for several years, coming to JOIN for basic needs like showers, a locker to store his belongings, and community. I would often fi nd Nathan BeaƩ y, Treasurer him in the House playing dominoes, or using one of our computers Umpqua Bank to check apartment availability or connect with his family on face- book. Anna Plumb, Secretary Multnomah County John’s life has been fi lled with struggles and what he calls “bad choices.” He has a history of addiction and many encounters with Fineke Brasser law enforcement. He has children and grand-children he hasn’t Community Volunteer seen in person for years. John also has a college education, a his- tory of well-paying and high power jobs, and beautiful stories of Russ Campbell friendships and family events.
    [Show full text]
  • Hurricane Harvey Clean Rivers Program Impact Lessons Learned from Laboratory Flooding Table of Contents
    Hurricane Harvey Clean Rivers Program Impact Lessons Learned from Laboratory Flooding Table of Contents • Hurricane Harvey General Information • Local River Basin impact • Community Impact • LNVA Laboratory Impact • Lessons Learned General Information Hurricane Harvey Overview General Information • Significantly more info is available online • Wikipedia, RedCross, Weather.GoV, etc • Brief Information • Struck Texas on August 24, 2017 • Stalled, dumped rain, went back to sea • Struck Louisiana on August 29, 2017 • Stalled, dumped rain, finally drifted inland • Some estimates of rainfall are >20 TRILLION gallons General Information • Effect on Texans • 13,000 rescued • 30,000 left homeless • 185,000 homes damaged • 336,000 lost electricity • >$100,000,000,000 in revenue lost • Areas of Houston received flooding that exceeded the 100,000 year flood estimates General Information • On the plus side… • 17% spike in births 9 months after Harvey • Unprecedented real-world drainage modeling • Significant future construction needs identified • IH-10 and many feeder highways already being altered to account for high(er) rainfall events • Many homes being built even higher, above normal 100y and 500Y flood plains River Basin Impact Lower Neches River and surrounding areas River Basin Impact • Downed trees • Providing habitat for fish and ecotone species • Trash • Still finding debris and trash miles inland and tens of feet up in trees • And bones • Oil spills • Still investigating, but likely will not see impact River Basin Impact • The region is used to normal, seasonal flooding • most plants and wildlife are adapted to it • Humans are likely the only species really impacted • And their domestic partners Village Creek, one of the tributaries of the Neches River, had a discharge comparable to that of the Niagra River (i.e.
    [Show full text]
  • NOAA National Weather Service Flood Forecast Services
    NOAA National Weather Service Flood Forecast Services Jonathan Brazzell Service Hydrologist National Weather Service Forecast Office Lake Charles Louisiana J Advanced Hydrologic Prediction Service - AHPS This is where all current operational riverine forecast services are located. ● Observations and deterministic forecasts ● Some probabilistic forecast information is available at various locations with more to be added as time allows. ● Graphical Products ● Static Flood Inundation Mapping slowly spinning down in an effort to put more resources to Dynamic Flood Inundation Maps! http://water.weather.gov/ AHPS Basic Services ● Dynamic Web Mapping Service ○ Shows Flood Risk Categories Based on Observations or Forecast ○ Deterministic Forecast Hydrograph ○ River Impacts http://water.weather.gov/ Forecast location Observations with at least a 5 day forecast. Forecast period is longer for larger river systems. Deterministic forecast based on 24 -72 hour forecast rainfall depending on confidence. Impacts Probabilistic guidance over the next 90 days based on current conditions and historical simulations. We will continue to increase the number of sites with time. Flood Categories Below Flood Stage - The river is at or below flood stage. Action Stage - The river is still below flood stage or at bankfull, but little if any impact. This stage requires that forecast be issued as a heads up for flood only forecast points. Minor - Minimal or no property damage, but possibly some public threat. Moderate - Some inundation of structures and roads near the stream – some evacuations of people and property possible. Major - Extensive inundation of structures and roads. Significant evacuations of people and property. Rainfall that goes into the models Rainfall is constantly QC’d by looking at radar and rain gauge observations on an hourly basis.
    [Show full text]
  • COWI World-Wide
    COWI has over 7,000 employees COWI World-wide JANUARY 17, 2013 2 PANYNJ FLOOD BARRIER Ben C. Gerwick, Inc. › Internationally renowned engineering consulting firm HQ in Oakland, CA › History of creative solutions that minimize risk, cost, and time › Focused on constructability, serviceability, maintenance, and durability of structures in waterways and marine sites › Conceptual design, cost estimates planning, permitting, final design and construction support › Documentation & quality control › Decades of experience with government design criteria to streamline the approval and permitting process › Work is exemplified by New Orleans IHNC Floodgates, Braddock Dam, Olmsted Dam, and Chickamauga Lock. IHNC Swing Gate Tow 3 Select projects Experience › IHNC Lake Borgne Barrier (Design/ Constr. Supt.) › Montezuma Slough Salinity Barrier (Concept. Des./ Constr. Eng.) › Braddock Dam (Design/ Constr. Supt.) › Chickamauga Lock (Design/ Constr. Eng.) › Olmsted Lock and Dam (Design/ Constr. Eng.) › Venice Storm Surge Barrier (Conceptual Des.) › Yeong-Am Lift Gate (Conceptual Des.) 4 Venice Storm Surge Barrier Compressed air is used to raise gates during a storm. Gerwick performed detailed constructability review for this project. 5 Montezuma Slough Salinity Barrier Complex Radial gate structure for Salinity Barrier in the California Delta. Offsite prefabrication & float-in. 6 Chickamauga Lock Cofferdam, Chattanooga, TN 7 Olmsted Dam Construction Photos › Over 4,000-ton Elements have Been Placed with 1-Inch Accuracy in Six Degrees of Freedom JANUARY 17, 2013 8 PANYNJ FLOOD BARRIER Braddock Dam – Dam Segment Tow to Site Float-in of dam elements allows for minimal construction time, saving money and time 9 Braddock Dam, Pittsburgh, PA – Graving Site Two-Level Graving Dock for Float-in Shell 10 IHNC Hurricane Protection Project New Orleans, Louisiana Sector Gate (150') & • Gerwick is the Lead Designer Swing Gate (150') for the $1.3-billion design-build contract for the USACE Hurricane Protection Office.
    [Show full text]