Coastal Hazards
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Coastal Hazards Primers
Coastal Hazards Primers Table of Contents Introduction ............................................................................................................................................................................. 2 Flooding .................................................................................................................................................................................... 2 Background ......................................................................................................................................................................... 2 Flood Mapping .................................................................................................................................................................... 2 Flood Management ........................................................................................................................................................... 2 Flood Mitigation .................................................................................................................................................................. 2 Flood Response and Recovery ............................................................................................................................................ 3 Wind ........................................................................................................................................................................................... 3 Background ........................................................................................................................................................................ -
Linktm Gabions and Mattresses Design Booklet
LinkTM Gabions and Mattresses Design Booklet www.globalsynthetics.com.au Australian Company - Global Expertise Contents 1. Introduction to Link Gabions and Mattresses ................................................... 1 1.1 Brief history ...............................................................................................................................1 1.2 Applications ..............................................................................................................................1 1.3 Features of woven mesh Link Gabion and Mattress structures ...............................................2 1.4 Product characteristics of Link Gabions and Mattresses .........................................................2 2. Link Gabions and Mattresses .............................................................................. 4 2.1 Types of Link Gabions and Mattresses .....................................................................................4 2.2 General specification for Link Gabions, Link Mattresses and Link netting...............................4 2.3 Standard sizes of Link Gabions, Mattresses and Netting ........................................................6 2.4 Durability of Link Gabions, Link Mattresses and Link Netting ..................................................7 2.5 Geotextile filter specification ....................................................................................................7 2.6 Rock infill specification .............................................................................................................8 -
Example Language for Identifying Sea Level Rise and Coastal Hazards Information Necessary for a Complete CDP Application
STATE OF CALIFORNIA—NATURAL RESOURCES AGENCY EDMUND G. BROWN, JR., GOVERNOR CALIFORNIA COASTAL COMMISSION 45 FREMONT STREET, SUITE 2000 SAN FRANCISCO, CA 94105- 2219 VOICE (415) 904- 5200 FAX ( 415) 904- 5400 TDD (415) 597-5885 To: Coastal Commission District Staff, Coastal Planning Departments From: Kelsey Ducklow, Coastal Commission, Statewide Planning Unit Date: January 3, 2019 Re: Example language for identifying sea level rise and coastal hazards information necessary for a complete CDP application Purpose This memo is intended to provide coastal analysts with information and example language that can be used in a non-filing/incomplete letter (or to gather information prior to submittal of a CDP application) when asking for an analysis of coastal hazards and sea level rise from an applicant. This language is generally similar to the information coastal analysts have requested in the past to be included in technical studies that analyze potential impacts from coastal hazards, but includes additional detail on how to incorporate sea level rise into those analyses. Please note that the information and example language below pertains only to the coastal hazards-related portion of a CDP application. It is not meant to address other common issues such as the need for a more detailed project description or project plans, or additional information on impacts to public access and recreation, ESHA, visual resources, and so on, except insomuch as there is overlap with those issues and coastal hazards. Additionally, note that in most cases, the example language below will need to be modified, expanded, or deleted to address site or project-specific concerns. -
Broad Beach Restoration Project Coastal Development Permit
Broad Beach Restoration Project Coastal Development Permit Project Description FINAL PREPARED FOR: TRANCAS PROPERTY OWNER’S ASSOCIATION PREPARED BY: 3780 KILROY AIRPORT WAY, SUITE 600, LONG BEACH, CA 90806 JANUARY 2011 JOB NO. 6935 1. INTRODUCTION 2 Broad Beach is located in the northwest portion of the County of Los Angeles and within the City of Malibu. The project area is comprised of the shoreline area fronting approximately 80 homes spanning approximately from Lechuza Point to Trancas Creek. Broad beach has been suffering shoreline erosion over the past 30 plus years, resulting in an almost complete loss of recreation and public access. Public access through dedicated public access ways from Broad Beach Rd. to the beach was rendered impossible during the most severe storms and tidal action over the past few years. The severe erosion problem now threatens private property and dune fields along this stretch of beach. The Trancas Property Owner’s Association (TPOA), representing almost all of the property owners along the Broad Beach shoreline, has elected to address the extensive erosion by privately funding a beach and sand dune restoration project which will not only protect their homes but also restore the beach to its historic grandeur not only for their benefit but for the benefit of the public at large. The Broad Beach restoration project seeks to design, permit, and implement a shoreline restoration program that provides erosion control, property protection, improved recreation and public access opportunities, aesthetics, and dune habitat. Broad Beach Restoration – Project Description FINAL The vicinity and location of the project site are shown below in figure 1. -
Design of Riprap Revetment HEC 11 Metric Version
Design of Riprap Revetment HEC 11 Metric Version Welcome to HEC 11-Design of Riprap Revetment. Table of Contents Preface Tech Doc U.S. - SI Conversions DISCLAIMER: During the editing of this manual for conversion to an electronic format, the intent has been to convert the publication to the metric system while keeping the document as close to the original as possible. The document has undergone editorial update during the conversion process. Archived Table of Contents for HEC 11-Design of Riprap Revetment (Metric) List of Figures List of Tables List of Charts & Forms List of Equations Cover Page : HEC 11-Design of Riprap Revetment (Metric) Chapter 1 : HEC 11 Introduction 1.1 Scope 1.2 Recognition of Erosion Potential 1.3 Erosion Mechanisms and Riprap Failure Modes Chapter 2 : HEC 11 Revetment Types 2.1 Riprap 2.1.1 Rock Riprap 2.1.2 Rubble Riprap 2.2 Wire-Enclosed Rock 2.3 Pre-Cast Concrete Block 2.4 Grouted Rock 2.5 Paved Lining Chapter 3 : HEC 11 Design Concepts 3.1 Design Discharge 3.2 Flow Types 3.3 Section Geometry 3.4 Flow in Channel Bends 3.5 Flow Resistance 3.6 Extent of Protection 3.6.1 Longitudinal Extent 3.6.2 Vertical Extent 3.6.2.1 Design Height 3.6.2.2 Toe Depth Chapter 4 : HEC 11 Design Guidelines for Rock Riprap 4.1 Rock Size Archived 4.1.1 Particle Erosion 4.1.1.1 Design Relationship 4.1.1.2 Application 4.1.2 Wave Erosion 4.1.3 Ice Damage 4.2 Rock Gradation 4.3 Layer Thickness 4.4 Filter Design 4.4.1 Granular Filters 4.4.2 Fabric Filters 4.5 Material Quality 4.6 Edge Treatment 4.7 Construction Chapter 5 : HEC 11 Rock -
Coastal Hazards & Flood Mapping – a Visual Guide
COASTAL HAZARDS & FLOOD MAPPING A VISUAL GUIDE Coastal communities are special places and home to important resources. But what makes them so distinctive is also what makes them at high risk for floods. Floods are the nation’s costliest natural disasters, and coastal communities face many flood risks. These include storm surges, powerful waves, and erosion — all of which can cause extensive damage to homes, businesses, and public spaces. When a coastal storm approaches, community leaders and members of the media may use technical terms to describe storm-related risks. This visual guide explains these terms and how they relate to information shown on flood maps. TABLE OF CONTENTS UNDERSTANDING COASTAL HAZARDS & RISKS ........... 1 Inundation ..............................................................1 Coastal Flooding .....................................................1 Stillwater Elevation ..................................................2 Wave Setup ............................................................2 Storm Surge ...........................................................2 Storm Tide ..............................................................2 Wave Hazards .........................................................3 a. Runup and Overtopping b. Overland Wave Propagation Erosion ...................................................................4 Sea Level Rise ........................................................5 Tsunami ..................................................................5 COASTAL FLOOD MAPS: KEY TERMS -
Design of Riprap Revetment
, 1-) r-) P .A) C? F Hydraulic Engineering Circular No. 11 U.S. Department of Transportation Federal Highway Publication Na FHWA-lP-89-016 Administration March 1989 Design of Riprap Revetment Research, Development, and-T"echnology Turner-Fairbank Highwayffesewch Center 6300 Gec rg3#own Pike McLean, V'wffiniae=-2296 WATER RESOURCES ' RESEARCH LABORATORY J OFFICIAL FILE COPY Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA-IP-89-016 HEC-11 4, Title and Subtitle S. Report Dote March 1989 DESIGN OF RIPRAP REVETMENT 6. Performing Organization Code 8. Performing Organization Report No. 7, Aurhorrs) Scott A. Brown, Eric S. Clyde 9, Performing Organization Name and Address 10. Work Unit No. (TRAIS) Sutron Corporation 3D9C0033 2190 Fox Mill Road 11. Contract or Grant No. Herndon, VA 22071 DTFH61-85-C-00123 13. Type of Report and Period Covered 12. Sponsoring Agency Name and Address Office of Implementation, HRT-10 Final Report Federal Highway Administration Mar. 1986 - Sept. 1988 6200 Georgetown Pike McLean, VA 22101 14. Sponsoring Agency Code 15. Supplementary Notes Project Manager: Thomas Krylowski Technical Assistants: Philip L. Thompson, Dennis L. Richards, J. Sterling Jones 16. Abstract This revised version of Hydraulic Engineering Circular No. 11 (HEC-11), represents major revisions to the earlier (1967) edition of HEC-11. Recent research findings and revised design procedures have been incorporated. The manual has been expanded into a comprehensive design publication. The revised manual includes discussions on recognizing erosion potential, erosion mechanisms and riprap failure modes, riprap types including rock riprap, rubble riprap, gabions, preformed blocks, grouted rock, and paved linings. -
The Study of the Coastal Management Criteria Based on Risk Assessmeant: a Case Study on Yunlin Coast, Taiwan
water Article The Study of the Coastal Management Criteria Based on Risk Assessmeant: A Case Study on Yunlin Coast, Taiwan Wei-Po Huang 1,2,* ID , Jui-Chan Hsu 1, Chun-Shen Chen 3 and Chun-Jhen Ye 1 1 Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan; [email protected] (J.-C.H.); [email protected] (C.-J.Y.) 2 Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan 3 Water Resources Planning Institute, Water Resources Agency, Ministry of Economic Affairs, Taichung 41350, Taiwan; [email protected] * Correspondence: [email protected]; Tel.: +886-2-2462-2192 (ext. 6154) Received: 18 June 2018; Accepted: 25 July 2018; Published: 26 July 2018 Abstract: In this study, we used the natural and anthropogenic characteristics of a coastal region to generate risk maps showing vulnerability and potential hazards, and proposed design criteria for coastal defense and land use for the various kinds of risks faced. The Yunlin coast, a first-level protection area in mid-west Taiwan, was then used as an example to illustrate the proposed design criteria. The safety of the present coastal defenses and land use of the Yunlin coastal area was assessed, and coastal protection measures for hazard prevention were proposed based on the generated risk map. The results can be informative for future coastal management and the promotion of sustainable development of coastal zones. Keywords: coastal defense; risk maps; non-engineering measure; coastal vulnerability 1. Introduction Like most developing countries, Taiwan’s coast has been alternatively used for settlement, agriculture, trade, industry, and recreation without careful and thorough planning in the development stage since 70s. -
Technical Evaluation of the Performance of River Groynes Installed in Sezar and Kashkan Rivers, Lorestan, Iran
J. Appl. Environ. Biol. Sci. , 5(1 1S)258 -268 , 2015 ISSN: 2090-4274 Journal of Applied Environmental © 2015, TextRoad Publication and Biological Sciences www.textroad.com Technical Evaluation of the Performance of River Groynes Installed in Sezar and Kashkan Rivers, Lorestan, Iran Farzad Mohammadi*1, Nazanin Mohammadi 2 1 Department of Water Sciences and Engineering, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran 2 Department of Architecture and Urbanism, Shahid Beheshti University, Tehran, Iran Received: May 14, 2015 Accepted: August 27, 2015 ABSTRACT In this paper we aim to investigate the performance of River Groynes that have installed near the banks of Kashkan and Sezar rivers in Lorestan province of Iran. For this purpose we performed field studies, and collected information about these rivers. To predict depth of scour at groynes we used equations proposed by Khosla (1953), Garde et al (1961), Niel (1973), Zaghloul(1983), Ahmad (1953), Gill (1972) and Liu (1961).Our results showed that The groyne constructed on both rivers had performed their performance properly in spite of their design and application. The spaces between groynes and their length had been determined suitably in Sezar river, but it was not suitable in Kashkan river. Using poor materials, poor pier foundation, and improper lateral wall angle were their negative aspects Considering the armoring phenomenon, the river bed has reached a proper balance, and therefore, river protection and thus, erosion between two groynes was conducted properly. KEYWORDS: Kashkan River, Sezar River, river groyne, performance, scour depth, flow pattern, groyne- fields 1. INTRODUCTION Rivers are continuously changing under the influence of various factors including geology and topology of the region, properties of alluvial deposits in floodplain, hydrologic features of the basin, hydraulic condition of the flow, and human exploitations. -
A Guide for Evaluating Coastal Community Resilience to Tsunamis
HOW RESILIENT IS YOUR COASTAL COMMUNITY? A GUIDE FOR EVALUATING COASTAL COMMUNITY RESILIENCE TO TSUNAMIS AND OTHER HAZARDS HOW RESILIENT IS YOUR COASTAL COMMUNITY? A GUIDE FOR EVALUATING COASTAL COMMUNITY RESILIENCE TO TSUNAMIS AND OTHER HAZARDS U.S. Indian Ocean Tsunami Warning System Program 2007 Printed in Bangkok, Thailand Citation: U.S. Indian Ocean Tsunami Warning System Program. 2007. How Resilient is Your Coastal Community? A Guide for Evaluating Coastal Community Resilience to Tsunamis and Other Coastal Hazards. U.S. Indian Ocean Tsunami Warning System Program supported by the United States Agency for International Development and partners, Bangkok, Thailand. 144 p. The opinions expressed herein are those of the authors and do not necessarily reflect the views of USAID. This publication may be reproduced or quoted in other publications as long as proper reference is made to the source. The U.S. Indian Ocean Tsunami Warning System (IOTWS) Program is part of the international effort to develop tsunami warning system capabilities in the Indian Ocean following the December 2004 tsunami disaster. The U.S. program adopted an “end-to-end” approach—addressing regional, national, and local aspects of a truly functional warning system—along with multiple other hazards that threaten communities in the region. In partnership with the international community, national governments, and other partners, the U.S. program offers technology transfer, training, and information resources to strengthen the tsunami warning and preparedness capabilities of national and local stakeholders in the region. U.S. IOTWS Document No. 27-IOTWS-07 ISBN 978-0-9742991-4-3 How REsiLIENT IS Your CoastaL COMMUNity? A GuidE For EVALuatiNG CoastaL COMMUNity REsiLIENCE to TsuNAMis AND OthER HAZards OCTOBER 2007 This publication was produced for review by the United States Agency for International Development. -
Balancing the Future of Europe's Coasts
EEA Report No 12/2013 Balancing the future of Europe's coasts — knowledge base for integrated management ISSN 1725-9177 EEA Report No 12/2013 Balancing the future of Europe's coasts — knowledge base for integrated management Cover design: EEA Cover photo © Andrus Meiner Left photo © Peter Kristensen Right photo © Andrus Meiner Layout: EEA/Pia Schmidt Legal notice The contents of this publication do not necessarily reflect the official opinions of the European Commission or other institutions of the European Union. Neither the European Environment Agency nor any person or company acting on behalf of the Agency is responsible for the use that may be made of the information contained in this report. Copyright notice © European Environment Agency, 2013 Reproduction is authorised, provided the source is acknowledged, save where otherwise stated. Information about the European Union is available on the Internet. It can be accessed through the Europa server (www.europa.eu). Luxembourg: Publications Office of the European Union, 2013 ISBN 978-92-9213-414-3 ISSN 1725-9177 doi:10.2800/99116 Environmental production This publication is printed according to high environmental standards. Printed by Rosendahls-Schultz Grafisk — Environmental Management Certificate: DS/EN ISO 14001: 2004 — Quality Certificate: DS/EN ISO 9001: 2008 — EMAS Registration. Licence no. DK – 000235 — Ecolabelling with the Nordic Swan, licence no. 541-457 — FSC Certificate – licence code FSC C0688122 Paper RePrint — 90 gsm. CyclusOffset — 250 gsm. Both paper qualities are recycled paper and have obtained the ecolabel Nordic Swan. Printed in Denmark REG.NO. DK-000244 European Environment Agency Kongens Nytorv 6 1050 Copenhagen K Denmark Tel.: +45 33 36 71 00 Fax: +45 33 36 71 99 Web: eea.europa.eu Enquiries: eea.europa.eu/enquiries Contents Contents Acknowledgements ................................................................................................... -
The Rock Manual
8 Design of river and canal structures 1 2 3 4 5 6 7 8 9 10 CIRIA C683 965 8 Design of river and canal structures CHAPTER 8 CONTENTS 8.1 Introduction. 970 8.1.1 Context . 970 8.1.2 Types of structures and functions. 971 8.1.3 Design methodolology. 973 8.1.3.1 Approach to the design . 973 8.1.3.2 Functional requirements . 974 8.1.3.3 Detailed design . 975 8.1.3.4 Economic considerations . 975 8.1.3.5 Environmental and social considerations . 976 8.1.3.6 Physical conditions . 976 8.1.3.7 Materials related considerations. 977 8.1.3.8 Construction related considerations . 979 8.1.3.9 Operation and maintenance related considerations . 980 8.2 River training works . 980 8.2.1 Erosion processes . 980 8.2.2 Types of river training structures . 982 8.2.2.1 Revetments . 983 8.2.2.2 Spur-dikes and hard points . 984 8.2.2.3 Guide banks . 985 8.2.2.4 Works to improve navigation . 986 8.2.2.5 Flood protection . 986 8.2.2.6 Selection of the appropriate solution. 987 8.2.3 Data collection . 988 8.2.4 Determination of the loadings . 988 8.2.4.1 Hydraulic loads. 988 8.2.4.2 Other types of loads . 989 8.2.5 Plan layout . 989 8.2.5.1 General points. 989 8.2.5.2 Bank protection . 990 8.2.5.3 Spur-dikes . 992 8.2.5.4 Longitudinal dikes or guide banks .