DOCSLIB.ORG

FLOODPLAIN MANAGEMENT PLAN Monterey County, CA 2014 Update 2014 Update

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
FLOODPLAIN MANAGEMENT PLAN Monterey County, CA 2014 Update 2014 Update FLOODPLAIN MANAGEMENT PLAN Monterey County, CA 2014 Update 2014 Update Prepared by: Monterey County Water Resources Agency Salinas Salinas River, March 1995 Pajaro, March 1995 Castroville, Floodplain March Management 1995 Plan Carmel River, February 1998 Monterey County, CA | ii Table of Contents 1. Introduction .................................................................................................................................... 1 1.1 Purpose and Scope ............................................................................................................................................... 1 1.2 The FMP and the FEMA NFIP/CRS Program ............................................................................................. 1 1.3 Goals of the FMP ................................................................................................................................................... 3 2. County Profile Summary ............................................................................................................. 5 2.1 Geography, Demographics, and Climate ..................................................................................................... 5 2.2 Watersheds ............................................................................................................................................................. 5 2.3 Government Structure ....................................................................................................................................... 6 2.4 Floodplain Management Program ................................................................................................................. 6 2.5 Development Trends in the Floodplain ...................................................................................................... 8 3. FMP Planning and Public Participation ................................................................................. 9 3.1 Background ............................................................................................................................................................. 9 3.2 Planning and Participation ............................................................................................................................... 9 4. Historical Flooding in Monterey County ............................................................................. 11 4.1 Flood Events of 1995 & 1998 ........................................................................................................................ 12 4.2 Recent Flood Events (2000’s) ....................................................................................................................... 15 4.3 History and Update on Disasters in Monterey County ....................................................................... 15 5. Monterey County Hazard Identification and Risk Assessment ................................... 17 5.1 Definition of Flood ............................................................................................................................................. 17 5.2 Flood Hazard Risk .............................................................................................................................................. 17 5.3 Flood Insurance Rate Maps and Monterey County Flood Maps ..................................................... 17 5.4 Monterey County Flood Insurance Study ................................................................................................. 19 5.5 Vulnerable Structures ...................................................................................................................................... 19 5.6 Repetitive Loss Property Vulnerability ..................................................................................................... 19 5.7 Additional Natural Hazards ........................................................................................................................... 25 6. Prevention Measures ................................................................................................................. 27 6.1 Current Prevention Measures ....................................................................................................................... 27 7. Property Protection ................................................................................................................... 31 7.1 FEMA Flood Mitigation Assistance Grants ............................................................................................... 31 7.2 Flood Insurance .................................................................................................................................................. 31 8. Natural Resources Protection ................................................................................................. 33 8.1 Natural Resources Protection Efforts ........................................................................................................ 33 8.2 Wetlands Protection ......................................................................................................................................... 33 8.3 Grading and Erosion Control ......................................................................................................................... 34 8.4 Construction Best Management Practices ............................................................................................... 34 8.5 Dumping Regulations ....................................................................................................................................... 35 9. Emergency Services .................................................................................................................... 36 9.1 Emergency Storm Response .......................................................................................................................... 36 9.2 ALERT Flood Warning System ...................................................................................................................... 36 9.3 Dam Safety ............................................................................................................................................................ 37 9.4 Sandbag Inventory and Sand Stockpiles ................................................................................................... 38 10. Structural Projects ...................................................................................................................... 39 10.1 Dams ........................................................................................................................................................................ 39 10.2 Levees/Floodwalls ............................................................................................................................................. 41 10.3 Drainage Facilities and Diversions.............................................................................................................. 42 10.4 Storm Drain Improvements and Basins .................................................................................................... 44 10.5 Stream, Channel, and Basin Maintenance ................................................................................................ 45 10.6 Flood Control Projects ...................................................................................................................................... 45 11. Public Information ...................................................................................................................... 58 11.1 Map Information ................................................................................................................................................. 58 11.2 Outreach Projects ............................................................................................................................................... 59 11.3 Real Estate Disclosure ...................................................................................................................................... 59 11.4 Library .................................................................................................................................................................... 59 11.5 Technical Assistance ......................................................................................................................................... 59 12. Repetitive Loss Areas ................................................................................................................. 60 12.1 Description of the Repetitive Loss Problem ............................................................................................ 60 12.2 Mitigation Options ............................................................................................................................................. 65 12.3 Repetitive Loss Area Outreach Project ...................................................................................................... 67 13. Flood Hazard Mitigation Goals and Action Plan ............................................................... 68 13.1 Administrative Action Items .......................................................................................................................... 68 13.2 Program Action Items .....................................................................................................................................
Load more

Recommended publications
  • National Forest Genetic Electrophoresis Lab Annual Report 2003 – 2004 (FY04)
    USDA FOREST SERVICE NATIONAL FOREST GENETICS LABORATORY (NFGEL) Annual Report 2003 – 2004 (FY04) 2480 Carson Road, Placerville, CA 95667 530-622-1609 (voice), 530-622-2633 (fax), [email protected] Report prepared December 2004 INTRODUCTION This report covers laboratory activities and accomplishments during Fiscal Year 2004. October 1, 2003 through September 30, 2004 Background NFGEL was established in 1988 as part of the National Forest System of the USDA-Forest Service. The focus of the lab is to address genetic conservation and management of all plant species using a variety of laboratory techniques including DNA analyses. NFGEL services are provided to managers within the Forest Service, other government agencies, and non- government organizations for assessing and monitoring genetic diversity. Purpose of Laboratory The purpose of the Laboratory is to analyze molecular genetic markers (protein and DNA) in plant material submitted by Forest Service employees and those from other cooperating entities. NFGEL provides baseline genetic information, determines the effect of management on the genetic resource, supports genetic improvement program, and contributes information in the support of conservation and restoration programs, especially those involving native and TES (threatened, endangered, and sensitive) species. Alignment to National Strategic Plan for FY04-08 NFGEL’s work aligns to the following National Strategic Plan measures: 1. Goal 1 (Reduce risks from catastrophic wildland fire) 2. Goal 2 (Reduce the impacts from invasive species). 3. Goal 4 (Help meet energy resource needs) 4. Goal 5 (Improve watershed condition) 5. Goal 6 (Mission related work in addition to that which supports the agency goals) NFGEL Projects NFGEL projects were processed to meet a variety of management objectives.
    [Show full text]
  • Doggin' America's Beaches
    Doggin’ America’s Beaches A Traveler’s Guide To Dog-Friendly Beaches - (and those that aren’t) Doug Gelbert illustrations by Andrew Chesworth Cruden Bay Books There is always something for an active dog to look forward to at the beach... DOGGIN’ AMERICA’S BEACHES Copyright 2007 by Cruden Bay Books All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system without permission in writing from the Publisher. Cruden Bay Books PO Box 467 Montchanin, DE 19710 www.hikewithyourdog.com International Standard Book Number 978-0-9797074-4-5 “Dogs are our link to paradise...to sit with a dog on a hillside on a glorious afternoon is to be back in Eden, where doing nothing was not boring - it was peace.” - Milan Kundera Ahead On The Trail Your Dog On The Atlantic Ocean Beaches 7 Your Dog On The Gulf Of Mexico Beaches 6 Your Dog On The Pacific Ocean Beaches 7 Your Dog On The Great Lakes Beaches 0 Also... Tips For Taking Your Dog To The Beach 6 Doggin’ The Chesapeake Bay 4 Introduction It is hard to imagine any place a dog is happier than at a beach. Whether running around on the sand, jumping in the water or just lying in the sun, every dog deserves a day at the beach. But all too often dog owners stopping at a sandy stretch of beach are met with signs designed to make hearts - human and canine alike - droop: NO DOGS ON BEACH.
    [Show full text]
  • Seasonal Flooding Affects Habitat and Landscape Dynamics of a Gravel
    Seasonal flooding affects habitat and landscape dynamics of a gravel-bed river floodplain Katelyn P. Driscoll1,2,5 and F. Richard Hauer1,3,4,6 1Systems Ecology Graduate Program, University of Montana, Missoula, Montana 59812 USA 2Rocky Mountain Research Station, Albuquerque, New Mexico 87102 USA 3Flathead Lake Biological Station, University of Montana, Polson, Montana 59806 USA 4Montana Institute on Ecosystems, University of Montana, Missoula, Montana 59812 USA Abstract: Floodplains are comprised of aquatic and terrestrial habitats that are reshaped frequently by hydrologic processes that operate at multiple spatial and temporal scales. It is well established that hydrologic and geomorphic dynamics are the primary drivers of habitat change in river floodplains over extended time periods. However, the effect of fluctuating discharge on floodplain habitat structure during seasonal flooding is less well understood. We collected ultra-high resolution digital multispectral imagery of a gravel-bed river floodplain in western Montana on 6 dates during a typical seasonal flood pulse and used it to quantify changes in habitat abundance and diversity as- sociated with annual flooding. We observed significant changes in areal abundance of many habitat types, such as riffles, runs, shallow shorelines, and overbank flow. However, the relative abundance of some habitats, such as back- waters, springbrooks, pools, and ponds, changed very little. We also examined habitat transition patterns through- out the flood pulse. Few habitat transitions occurred in the main channel, which was dominated by riffle and run habitat. In contrast, in the near-channel, scoured habitats of the floodplain were dominated by cobble bars at low flows but transitioned to isolated flood channels at moderate discharge.
    [Show full text]
  • River Dynamics 101 - Fact Sheet River Management Program Vermont Agency of Natural Resources
    River Dynamics 101 - Fact Sheet River Management Program Vermont Agency of Natural Resources Overview In the discussion of river, or fluvial systems, and the strategies that may be used in the management of fluvial systems, it is important to have a basic understanding of the fundamental principals of how river systems work. This fact sheet will illustrate how sediment moves in the river, and the general response of the fluvial system when changes are imposed on or occur in the watershed, river channel, and the sediment supply. The Working River The complex river network that is an integral component of Vermont’s landscape is created as water flows from higher to lower elevations. There is an inherent supply of potential energy in the river systems created by the change in elevation between the beginning and ending points of the river or within any discrete stream reach. This potential energy is expressed in a variety of ways as the river moves through and shapes the landscape, developing a complex fluvial network, with a variety of channel and valley forms and associated aquatic and riparian habitats. Excess energy is dissipated in many ways: contact with vegetation along the banks, in turbulence at steps and riffles in the river profiles, in erosion at meander bends, in irregularities, or roughness of the channel bed and banks, and in sediment, ice and debris transport (Kondolf, 2002). Sediment Production, Transport, and Storage in the Working River Sediment production is influenced by many factors, including soil type, vegetation type and coverage, land use, climate, and weathering/erosion rates.
    [Show full text]
  • Birding Northern California by Jean Richmond
    BIRDING NORTHERN CALIFORNIA Site Guides to 72 of the Best Birding Spots by Jean Richmond Written for Mt. Diablo Audubon Society 1985 Dedicated to my husband, Rich Cover drawing by Harry Adamson Sketches by Marv Reif Graphics by dk graphics © 1985, 2008 Mt. Diablo Audubon Society All rights reserved. This book may not be reproduced in whole or in part by any means without prior permission of MDAS. P.O. Box 53 Walnut Creek, California 94596 TABLE OF CONTENTS Introduction . How To Use This Guide .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. Birding Etiquette .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. Terminology. Park Information .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 5 One Last Word. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 5 Map Symbols Used. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6 Acknowledgements .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6 Map With Numerical Index To Guides .. .. .. .. .. .. .. .. .. 8 The Guides. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 10 Where The Birds Are. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 158 Recommended References .. .. .. .. .. .. .. .. .. .. .. .. .. .. 165 Index Of Birding Locations. .. .. .. .. .. .. .. .. .. .. .. .. .. 166 5 6 Birding Northern California This book is a guide to many birding areas in northern California, primarily within 100 miles of the San Francisco Bay Area and easily birded on a one-day outing. Also included are several favorite spots which local birders
    [Show full text]
  • New Developments in River Valley Floodplain Mapping Using Dems
    New Developments in River Valley Floodplain Mapping Using DEMs: A Survey of FLDPLN Model Applications Jude Kastens | Kevin Dobbs | Steve Egbert Kansas Biological Survey ASWM/NFFA Webinar | January 13, 2014 Kansas Applied Remote Sensing Kansas River Valley between Manhattan and Topeka Email: [email protected] Terrain Processing: DEM (Digital Elevation Model) This DEM was created using LiDAR data. Shown is a portion of the river valley for Mud Creek in Jefferson County, Kansas. Unfilled DEM (shown in shaded relief) 2 Terrain Processing: Filled (depressionless) DEM This DEM was created using LiDAR data. Shown is a portion of the river valley for Mud Creek in Jefferson County, Kansas. Filled DEM (shown in shaded relief) 3 Terrain Processing: Flow Direction Each pixel is colored based on its flow direction. Navigating by flow direction, every pixel has a single exit path out of the image. Flow direction map (gradient direction approximation) 4 Terrain Processing: Flow Direction Each pixel is colored based on its flow direction. Navigating by flow direction, every pixel has a single exit path out of the image. Flow direction map (gradient direction approximation) 5 Terrain Processing: Flow Accumulation The flow direction map is used to compute flow accumulation. flow accumulation = catchment size = the number of exit paths that a pixel belongs to Flow accumulation map (streamline identification) 6 Terrain Processing: Stream Delineation Using pixels with a flow accumulation value >106 pixels, the Mud Creek streamline is identified (shown in blue). “Synthetic Stream Network” 7 Terrain Processing: Floodplain Mapping The 10-m floodplain was computed for Mud Creek using the FLDPLN model.
    [Show full text]
  • CIP Report 2001-02
    Fort Ord Reuse Authority Capital Improvement Program (CIP) FY 2001/2002 through 2020/2021 (Final Version – FORA Board Approval, 06/08/01) 1 Table of Contents Page No. I. Executive Summary 3, 4, 5 II. Obligatory Program of Projects – Description of CIP Elements a. Transportation/Transit Projects 6, 7, 8, 9 b. Potable Water Augmentation 10 c. Storm Drainage System Projects 11 d. Habitat Management Requirements 12 e. Public Facility (Fire Station) Requirements 13 f. Building Removal Program 14, 15, 16 g. Water and Wastewater Collection Systems 17 III. FY 2001/2002 through 2020/2021 CIP a. Transportation/Transit Element 18-22 b. Summary of Obligatory CIP Elements 23, 24 c. Summary Spreadsheet (Overall CIP) 25 Appendices A. Protocol for Review/Reprogramming of CIP 26 B. Summary of funded projects through 2000/2001 27-38 C. Protocol for “Candidate Projects” 39-42 as replacements to listed mitigative transportation projects Attachment A D. CIP Revenue Discussion 43-44 2 Executive Summary 1) Overview This Fort Ord Reuse Authority (FORA) Capital Improvement Program (CIP) is responsive to the capital improvement obligations defined under the Fort Ord Base Reuse Plan (BRP) as adopted by the FORA Board in June 1997. The BRP carries a series of mitigative project obligations defined in Appendix B of that plan as the Public Facilities Implementation Plan (PFIP). The PFIP, which serves as the baseline CIP for the reuse plan, is to be re-visited annually by the FORA Board to assure that required projects are implemented in a timely way to meet development needs. The PFIP was developed as a four-phase program spanning a twenty-year development horizon (1996-2015) and was based upon the best at-the-time forecasts of development patterns anticipated in concert with market absorption schedules for the area.
    [Show full text]
  • Discover California State Parks in the Monterey Area
    Crashing waves, redwoods and historic sites Discover California State Parks in the Monterey Area Some of the most beautiful sights in California can be found in Monterey area California State Parks. Rocky cliffs, crashing waves, redwood trees, and historic sites are within an easy drive of each other. "When you look at the diversity of state parks within the Monterey District area, you begin to realize that there is something for everyone - recreational activities, scenic beauty, natural and cultural history sites, and educational programs,” said Dave Schaechtele, State Parks Monterey District Public Information Officer. “There are great places to have fun with families and friends, and peaceful and inspirational settings that are sure to bring out the poet, writer, photographer, or artist in you. Some people return to their favorite state parks, year-after-year, while others venture out and discover some new and wonderful places that are then added to their 'favorites' list." State Parks in the area include: Limekiln State Park, 54 miles south of Carmel off Highway One and two miles south of the town of Lucia, features vistas of the Big Sur coast, redwoods, and the remains of historic limekilns. The Rockland Lime and Lumber Company built these rock and steel furnaces in 1887 to cook the limestone mined from the canyon walls. The 711-acre park allows visitors an opportunity to enjoy the atmosphere of Big Sur’s southern coast. The park has the only safe access to the shoreline along this section of cast. For reservations at the park’s 36 campsites, call ReserveAmerica at (800) 444- PARK (7275).
    [Show full text]
  • Floodplain Geomorphic Processes and Environmental Impacts of Human Alteration Along Coastal Plain Rivers, Usa
    WETLANDS, Vol. 29, No. 2, June 2009, pp. 413–429 ’ 2009, The Society of Wetland Scientists FLOODPLAIN GEOMORPHIC PROCESSES AND ENVIRONMENTAL IMPACTS OF HUMAN ALTERATION ALONG COASTAL PLAIN RIVERS, USA Cliff R. Hupp1, Aaron R. Pierce2, and Gregory B. Noe1 1U.S. Geological Survey 430 National Center, Reston, Virginia, USA 20192 E-mail: [email protected] 2Department of Biological Sciences, Nicholls State University Thibodaux, Louisiana, USA 70310 Abstract: Human alterations along stream channels and within catchments have affected fluvial geomorphic processes worldwide. Typically these alterations reduce the ecosystem services that functioning floodplains provide; in this paper we are concerned with the sediment and associated material trapping service. Similarly, these alterations may negatively impact the natural ecology of floodplains through reductions in suitable habitats, biodiversity, and nutrient cycling. Dams, stream channelization, and levee/canal construction are common human alterations along Coastal Plain fluvial systems. We use three case studies to illustrate these alterations and their impacts on floodplain geomorphic and ecological processes. They include: 1) dams along the lower Roanoke River, North Carolina, 2) stream channelization in west Tennessee, and 3) multiple impacts including canal and artificial levee construction in the central Atchafalaya Basin, Louisiana. Human alterations typically shift affected streams away from natural dynamic equilibrium where net sediment deposition is, approximately, in balance with net
    [Show full text]
  • Classifying Rivers - Three Stages of River Development
    Classifying Rivers - Three Stages of River Development River Characteristics - Sediment Transport - River Velocity - Terminology The illustrations below represent the 3 general classifications into which rivers are placed according to specific characteristics. These categories are: Youthful, Mature and Old Age. A Rejuvenated River, one with a gradient that is raised by the earth's movement, can be an old age river that returns to a Youthful State, and which repeats the cycle of stages once again. A brief overview of each stage of river development begins after the images. A list of pertinent vocabulary appears at the bottom of this document. You may wish to consult it so that you will be aware of terminology used in the descriptive text that follows. Characteristics found in the 3 Stages of River Development: L. Immoor 2006 Geoteach.com 1 Youthful River: Perhaps the most dynamic of all rivers is a Youthful River. Rafters seeking an exciting ride will surely gravitate towards a young river for their recreational thrills. Characteristically youthful rivers are found at higher elevations, in mountainous areas, where the slope of the land is steeper. Water that flows over such a landscape will flow very fast. Youthful rivers can be a tributary of a larger and older river, hundreds of miles away and, in fact, they may be close to the headwaters (the beginning) of that larger river. Upon observation of a Youthful River, here is what one might see: 1. The river flowing down a steep gradient (slope). 2. The channel is deeper than it is wide and V-shaped due to downcutting rather than lateral (side-to-side) erosion.
    [Show full text]
  • Monterey Elkhorn Slough Reserve 156 101 Zmudowski State Beach Moss Landing State Wildlife Area
    1 SANTA CRUZ BEACH BOARDWALK MANRESA STATE BEACH ELLICOTT SLOUGH NATIONAL WILDLLIFE REFUGE BEGIN YOUR UNIVERSITY EXPERIENCE IN WATSONVILLE STATE WILDLIFE AREA PAJARO VALLEY GOLF CLUB 1 MONTEREY ELKHORN SLOUGH RESERVE 156 101 ZMUDOWSKI STATE BEACH MOSS LANDING STATE WILDLIFE AREA MANZANITA COUNTY PARK BAY 1 SALINAS RIVER STATE BEACH HOLLISTER HILLS STATE VEHICULAR RECREATION AREA Monterey Bay is centrally located on the coast of 156 101 California, just two hours south of San Francisco, MONTEREY BAY with Los Angeles and San Diego in easy reach. The SALINAS RIVER NATIONAL bay itself, one of the world’s largest marine-protected WILDLIFE REFUGE 05 1 areas, is home to whales, deep sea anglerfish, and, NORTHRIDGE MALL of course, the CSUMB mascot, the sea otter. The MARINA STATE BEACH VISUAL AND PUBLIC CSUMB campus is near pristine beaches, redwood ART CENTER CALILFORNIA COASTAL NATIONAL MONUMENT forests, mountain ranges, tide pools, fertile valleys, ONCAMPUS large expanses of farmland, and the Fort Ord IN N OUT BURGER STUDENT 01 DINING CENTER National Monument. POINT PINOS FORT ORD BEACH 101 COMMONS LIGHTHOUSE The CSUMB campus sits halfway between the 01 LOVERS POINT ONCAMPUS Monterey Peninsula, which features the coastal 02 PARK CALIFORNIA STATE UNIVERSITY ON MONTEREY BAY G17 CAMPUS Cal State SAND CITY OTTER CHAPMAN SCIENCE communities of Pacific Grove, Monterey (California’s 08 MONTEREY BAY AQUARIUM HERON Monterey Bay at CSUMB HALL EXPRESS ACADEMIC CENTER PACIFIC GROVE MUSEUM 04 68 first capital), Seaside, Carmel, and the Salinas Valley, OF NATURAL HISTORY FISHERMAN'S WHARF BENIHANA RESTAURANT 06 MONTEREY ZOO which is known as the “Salad Bowl of the World” for G17 101 DEL MONTE DUNES its abundant agricultural production.
    [Show full text]
  • Floodplain Heterogeneity and Meander Migration
    River, Coastal and Estuarine Morphodynamics: RCEM2011 © 2011 Floodplain heterogeneity and meander migration MOTTA Davide Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois, USA E-mail: [email protected] ABAD Jorge D. Department of Civil and Environmental Engineering University of Pittsburgh, Pittsburgh, Pennsylvania, USA E-mail: [email protected] LANGENDOEN Eddy J. US Department of Agriculture, Agricultural Research Service National Sedimentation Laboratory, Oxford, Mississippi, USA E-mail: [email protected] GARCIA Marcelo H. Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois, USA E-mail: [email protected] ABSTRACT: The impact of horizontal heterogeneity of floodplain soils on rates and patterns of meander migration is analyzed with a Ikeda et al. (1981)-type model for hydrodynamics and bed morphodynamics, coupled with a physically-based bank erosion model according to the approach developed by Motta et al. (2011). We assume that rates of migration are determined by the resistance to hydraulic erosion of the soils, which is described by an excess shear stress relation. This relation uses two parameters characterizing the resistance to erosion: critical shear stress and erodibility coefficient. The spatial distribution of critical shear stress in the floodplain is generated on a regular grid with varying degree of randomness to mimic natural settings and the corresponding erodibility coefficient is computed with a relation derived from field-measured pairs of critical shear stress and erodibility. Centerline migration and associated statistics for randomly-disturbed distribution based on the distance from the valley axis are compared for sine-generated centerline using the Monte Carlo method.
    [Show full text]