DOCSLIB.ORG

Wetland & Floodplain Restoration Project

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Wetland & Floodplain Restoration Project CLEAR CREEK Wetland & Floodplain Restoration Project: The next step in bringing Clear Creek back to life Kitsap County Public Works Stormwater Division Development has increased stormwater runoff, contributing to • Increased stream erosion • Downstream flooding • Loss of aquatic habitat • Water quality problems Clear Creek Floodplain Project Kitsap County Public Works Kitsap County Public Works, Stormwater Division implemented the Clear Creek Floodplain Project to reconnect the stream with its floodplain and restore natural functions. Clear Creek Floodplain Project Kitsap County Public Works This will allow stormwater to be slowed, stored, and filtered naturally. Clear Creek Floodplain Project Kitsap County Public Works Additional benefits include • Improving fish and wildlife habitat • Enhancing connectivity with the Clear Creek Trail System Clear Creek Floodplain Project Kitsap County Public Works East Fork West Fork Mainstem The project is focused on an ecologically critical Mainstem area of Clear Creek, the confluence of two main branches, along with the upper mainstem. Clear Creek Floodplain Project Kitsap County Public Works The Project Team: Project Manager: Design Engineer: Construction: Revegetation: Clear Creek Floodplain Project Kitsap County Public Works Project Goals: To reduce downstream flooding and provide multiple benefits for people and wildlife: • Re-engage the West Fork, East Fork, and Mainstem with their historical floodplain • Remove fish barrier culverts • Enhance habitat • Improve or maintain connections with the Clear Creek Trail System Clear Creek Floodplain Project Kitsap County Public Works ✓Providing education to the public about the impacts of stormwater and the benefits of floodplain restoration. Clear Creek Floodplain Project Kitsap County Public Works Key Accomplishments Summer low flow, West Fork Floodplain Benefits: 6.4 acres of newly created floodplain 3,758 feet of new or enhanced stream length Increased flood storage capacity by 20 acre-feet Winter storm flow, West Fork Clear Creek Floodplain Project Kitsap County Public Works Key Accomplishments Habitat Benefits: 675 pieces of large wood installed 21 acres of invasive weeds removed 80,400 native trees & shrubs installed 2 barrier culverts removed Enhanced habitat for more diverse wildlife communities Clear Creek Floodplain Project Kitsap County Public Works Key Accomplishments Benefits to Citizens: 3 footbridges added Enhanced walking trails Providing ongoing public education about the benefits of floodplains, restoration, and salmon. (see Kitsap Salmon Guide) Clear Creek Floodplain Project Kitsap County Public Works Winter Storm Events: Year 1 Fall low flow Winter storm flow After 2 inches of rain in a 24-hour period. The floodplains Site: East Fork contained stormwater and did not flood adjacent roadways. Acknowledgements Funding: of funding was provided by a grant from 53% Washington Department of Ecology. of funding came from Kitsap County road fund 47% and stormwater management fees. Clear Creek Floodplain Project Kitsap County Public Works.
Load more

Recommended publications
  • Stream Restoration, a Natural Channel Design
    Stream Restoration Prep8AICI by the North Carolina Stream Restonltlon Institute and North Carolina Sea Grant INC STATE UNIVERSITY I North Carolina State University and North Carolina A&T State University commit themselves to positive action to secure equal opportunity regardless of race, color, creed, national origin, religion, sex, age or disability. In addition, the two Universities welcome all persons without regard to sexual orientation. Contents Introduction to Fluvial Processes 1 Stream Assessment and Survey Procedures 2 Rosgen Stream-Classification Systems/ Channel Assessment and Validation Procedures 3 Bankfull Verification and Gage Station Analyses 4 Priority Options for Restoring Incised Streams 5 Reference Reach Survey 6 Design Procedures 7 Structures 8 Vegetation Stabilization and Riparian-Buffer Re-establishment 9 Erosion and Sediment-Control Plan 10 Flood Studies 11 Restoration Evaluation and Monitoring 12 References and Resources 13 Appendices Preface Streams and rivers serve many purposes, including water supply, The authors would like to thank the following people for reviewing wildlife habitat, energy generation, transportation and recreation. the document: A stream is a dynamic, complex system that includes not only Micky Clemmons the active channel but also the floodplain and the vegetation Rockie English, Ph.D. along its edges. A natural stream system remains stable while Chris Estes transporting a wide range of flows and sediment produced in its Angela Jessup, P.E. watershed, maintaining a state of "dynamic equilibrium." When Joseph Mickey changes to the channel, floodplain, vegetation, flow or sediment David Penrose supply significantly affect this equilibrium, the stream may Todd St. John become unstable and start adjusting toward a new equilibrium state.
    [Show full text]
  • Economic Outcomes of Urban Floodplain Restoration
    ECONOMIC OUTCOMES OF URBAN FLOODPLAIN RESTORATION IMPLICATIONS FOR PUGET SOUND JUNE 2020 PREPARED BY BRANDON PARSONS American Rivers LAURA MARSHALL ECONorthwest MARK BUCKLEY ECONorthwest Lower Snoqualmie Valley near Duvall,WA, JONATHON LOOS December 9, 2015 fl ood Dartmouth College Source: King County, WA A Acknowledgments For over 40 years ECONorthwest has helped its clients make sound decisions based on rigorous economic, planning, and fi nancial analysis. For more information about ECONorthwest: www.econw.com. ECONorthwest prepared this report for American Rivers. We received substantial assistance and contributions to the report from Brandon Parsons, PLA with American Rivers, Jonathon Loos (Ph.D. Candidate, Dartmouth College), as well as Spencer Easton and Susan O’Neil with Environmental Science Associates. Other fi rms, agencies, and staff contributed to other research that this report relied on. Signifi cant input and review was provided by the steering committee members, who include: • Doug Osterman, WRIA 9 Salmon Recovery Manager • Jason Mulvihill-Kuntz, WRIA 8 Salmon Recovery • Suzanna Smith, WRIA 9 Habitat Projects Coordinator Manager • Matt Goehring, WRIA 9 Planning and Technical • Weston Brinkley, Principal, Street Sounds Ecology Coordinator • Tracy Stanton, Executive Director, The Emerald Alliance We specifi cally want to acknowledge the former Chair of the WRIA 9 Management Committee and Tukwila City Council Member - Dennis Robertson for his years of service. Dennis has devoted himself to restoring the Green-Duwamish River to benefi t the salmon and people that rely on it. Dennis is a strong proponent of healthy rivers that support healthy communities and tirelessly works to improve the environment for future generations which helped inspire this project.
    [Show full text]
  • Johnson Creek Restoration Project Effectiveness Monitoring
    Bureau of Environmental Services • City of Portland Johnson Creek Restoration Projects Effectiveness Monitoring Reporting on data collected from 1997 through 2010 DECEMBER 2012 Dan Saltzman, Commissioner Dean Marriott, Director Dan Saltzman, Commissioner • Dean Marriott, Director Acknowledgements Implementation of the effectiveness monitoring program for restoration projects in the Johnson Creek Watershed has drawn on the expertise, support, and dedication of a number of individuals. We thank them for making this report possible. City of Portland, Environmental Services Staff Jennifer Antak, Johnson Creek Effectiveness Monitoring Program Lead Sean Bistoff Trevor Diemer Mathew Dorfman Steven Kass Theophilus Malone Chris Prescott Gregory Savage Wendy Sletten Maggie Skenderian Ali Young Supporting Organizations and Consultants Oregon Watershed Enhancement Board Salmon River Engineering ‐ Janet Corsale, PE CPESC Portland State University ‐ Denisse Fisher Contents Introduction .........................................................................................................................1 Johnson Creek Overview ...................................................................................................1 Project Effectiveness Monitoring Program....................................................................12 Overview ........................................................................................................................12 Monitoring Methods.....................................................................................................13
    [Show full text]
  • Fluvial Geomorphic Assessment of the South River Watershed, MA
    Fluvial Geomorphic Assessment of the South River Watershed, MA Prepared for Franklin Regional Council of Governments Greenfield, MA South River Prepared by John Field Field Geology Services Farmington, ME February 2013 South River geomorphic assessment - February 2013 Page 2 of 108 Table of Contents EXECUTIVE SUMMARY ................................................................................................ 6 1.0 INTRODUCTION ........................................................................................................ 8 2.0 FLUVIAL GEOMORPHIC ASSESSMENT ............................................................... 8 2.1 Reach and segment delineation ................................................................................. 9 2.2 Review of existing studies ...................................................................................... 10 2.3 Watershed characterization ..................................................................................... 11 2.4 Historical aerial photographs and topographic maps .............................................. 12 2.5 Mapping of channel features ................................................................................... 13 2.5a Mill dams and impoundment sediments ............................................................ 14 2.5b Bar deposition ................................................................................................... 15 2.5c Bank erosion, mass wasting, and bank armoring ............................................. 15 2.5c Wood
    [Show full text]
  • A Geomorphic Monitoring and Adaptive Assessment Framework to Assess the Effect of Lowland Floodplain River Restoration on Channel–Floodplain Sediment Continuity
    RIVER RESEARCH AND APPLICATIONS River Res. Applic. (in press) Published online in Wiley InterScience (www.interscience.wiley.com). DOI: 10.1002/rra.911 A GEOMORPHIC MONITORING AND ADAPTIVE ASSESSMENT FRAMEWORK TO ASSESS THE EFFECT OF LOWLAND FLOODPLAIN RIVER RESTORATION ON CHANNEL–FLOODPLAIN SEDIMENT CONTINUITY J. L. FLORSHEIM,a* J. F. MOUNTa and C. R. CONSTANTINEb a Geology Department and Center for Integrated Watershed Science and Management, University of California, One Shields Avenue, Davis, CA 95616, USA b Now at Department of Geological Sciences, University of California, Santa Barbara, CA 93106, USA ABSTRACT The state of the science of lowland river floodplain restoration reflects the relatively new and experimental nature of large river floodplain rehabilitation efforts. Based on results of a case study of floodplain restoration at the lowland Cosumnes River, California, we present a geomorphic monitoring and adaptive assessment framework that addresses the need to inform and utilize scientific knowledge in lowland floodplain river restoration activities. Highlighting hydrogeomorphic processes that lead to habitat creation, we identify a discharge threshold for connectivity and sediment transfer from the channel to the floodplain and integrate discharge magnitude and duration to quantify a threshold to aid determination of when geomorphic monitoring is warranted. Using floodplain sand deposition volume in splay complexes as one indicator of dynamic floodplain habitat, we develop a model to aid prediction of the sand deposition volume as an assessment tool to use to analyze future monitoring data. Because geomorphic processes that form the physical structure of a habitat are dynamic, and because the most successful restoration projects accommodate this fundamental characteristic of ecosystems, monitoring designs must both identify trends and be adapted iteratively so that relevant features continue to be measured.
    [Show full text]
  • Restoration Opportunities at Tributary Confluences: Critical Habitat Assessment of the Big Chico Creek/Mud Creek/Sacramento River Confluence Area
    Restoration Opportunities at Tributary Confluences: Critical Habitat Assessment of the Big Chico Creek/Mud Creek/Sacramento River Confluence Area A report to: The Nature Conservancy, Sacramento River Project1 By: Eric M. Ginney2 Bidwell Environmental Institute, California State University, Chico December 2001. 1Please direct correspondence to: TNC, Sac. River Project Attn: D. Peterson 505 Main Street, Chico CA 95928 [email protected] 2Bidwell Environmental Institute CSU, Chico, Chico, CA 95929-0555 [email protected] Cover: An abstract view of the Sacramento River, looking upstream. Big Chico Creek enters from the east, in the lower portion of the image. Photograph and image manipulation by the author. Table of Contents Section I Study Purpose, Methods, and Objectives 1 Purpose 1 Methods and Objectives 2 Section II Tributary Confluences: Restoration 3 Opportunities Waiting to Happen Ecological Importance of Tributary Confluences and 3 Adjacent Floodplain Importance of Sacramento River Confluence Areas in 5 Collaborative Restoration Efforts Conservation by Design 7 Site-Specific Planning 8 Section III Critical Habitat Identification and Analysis 10 of Physical Processes Location and Description of Study Area 10 Landscape Level 10 Historic Conditions of Study Area and Changes 10 Through Time Current Conditions and Identification of Critical Habitat 16 Hydrologic Data 16 Soils 17 Hydro-geomorphic Processes 17 Site-Level Description: Singh Orchard Parcel 18 On-The-Ground Observations: Singh Parcel 19 Critical Habitat for Species of Concern
    [Show full text]
  • Wallooskee-Youngs Confluence Restoration Project
    B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Wallooskee-Youngs Confluence Restoration Project Draft Environmental Assessment December 2014 DOE/EA-1974 This page left intentionally blank � Contents Contents .............................................................................................................................................................. i � Tables v � Figures ............................................................................................................................................................... vi � Appendices ....................................................................................................................................................... vi � Chapter 1 ......................................................................................................................................................... 1-1 � Purpose of and Need for Action ............................................................................................................. 1-1 � 1.1 Need for Action .................................................................................................................................. 1-3 ­ 1.2 Purposes ............................................................................................................................................... 1-3 ­ 1.3 Background ......................................................................................................................................... 1-4 ­ 1.3.1 Statutory Context .............................................................................................................
    [Show full text]
  • Floodplain Restoration
    Prepared By: Tom Parker Geum Environmental Consulting, Inc. Topics covered: Definition of riparian and floodplain restoration Floodplain attributes as a basis for developing criteria for restoration designs Evolution of floodplain restoration design approach Floodplain restoration planning for the Upper Clark Fork River—example of design criteria Riparian and floodplain restoration – Creating conditions that will sustain natural processes and support floodplain functions The following floodplains attributes reflect how we think about natural processes and floodplain functions to support designing floodplain restoration projects Disturbance regime Hydrologic connectivity Nutrient transport and storage Substrate Topographic diversity Biological interactions Light regime Frequent, low-intensity disturbances such as livestock grazing, haying, and weed control prevent plant communities from progressing to later successional stages Initially, we were designing restoration treatments to address the existing static condition based on a modified disturbance regime Our response was to address the local symptoms of this modified disturbance regime: restore organic matter, limit weed competition and facilitate establishing native woody riparian vegetation in the floodplain no modification of topography or substrate Experimental treatments addressed soil moisture, temperature, and competition from other plants Total Survival by Species for Each Treatment (N=794) 100% 80% 60% BP CM 40% CO MO 20% 0% BP = Black plastic, woven polyethylene
    [Show full text]
  • Driving Forces in a Floodplain Restoration Project: Interaction Between Surface Water, Groundwater and Morphodynamic Processes During an Ecological Flooding
    146 Erosion and Sediment Yields in the Changing Environment (Proceedings of a symposium held at the Institute of Mountain Hazards and Environment, CAS-Chengdu, China, 11–15 October 2012) (IAHS Publ. 356, 2012). Driving forces in a floodplain restoration project: interaction between surface water, groundwater and morphodynamic processes during an ecological flooding PETER FISCHER1, FLORIAN HAAS1,2 & BERND CYFFKA1,2 1 Catholic University of Eichstaett-Ingolstadt, Applied Physical Geography; 85072 Eichstaett, Germany [email protected] 2 Floodplain Institute Neuburg, Germany Abstract Erosion, transport and deposition of sediment play a major role in restoration projects and sustainable river management. The main driving variables, water and sediment dynamics resurrect the natural processes in “riverscapes” and floodplains. After the first flooding of a new river course in the flood- plain along the River Danube between Neuburg and Ingolstadt (Germany) in 2010 (up to 5 m3/sec), new morphological activity started instantly. However, intensive erosion rates were measured during the first two controlled ecological flood events with water discharges of 10 m3 s-1 and 20 m3 s-1. The relatively new river banks are prone to lateral erosion and during bankfull stages new undercut slopes have developed. To understand the processes in this new river channel, its development is being recorded by a package of methods such as terrestrial laser scanning (TLS) measurements. Key words river restoration; floodplain; ground-based LiDAR; hydromorphology; monitoring INTRODUCTION Varying water levels and changing discharges with different flow conditions and directions are characteristic of floodplains. All these hydrological conditions directly influence the morphological processes in rivers, but also they have an effect on the riverine landscapes and their biocenoses.
    [Show full text]
  • Birch Creek Floodplain Restoration Project (Draft
    Birch Creek Floodplain Restoration Project Draft Environmental Assessment August 2020 DOE/EA-2135 This page left blank intentionally Birch Creek Floodplain Restoration Project Draft Environmental Assessment TABLE OF CONTENTS Acronyms vi Chapter 1 Introduction 1-1 Background ................................................................................................................. 1-1 Purpose and Need ....................................................................................................... 1-3 Public Scoping and Key Issues ................................................................................... 1-3 Chapter 2 Alternatives 2-1 Proposed Action .......................................................................................................... 2-1 2.1.1 Main-Channel Realignment and Restoration ............................................................. 2-1 2.1.2 Improve Secondary Channel and Floodplain Interactions ......................................... 2-2 2.1.2.1 Install Habitat-Forming In-Stream Large-Wood Structures ...................................... 2-2 2.1.3 Wetland Creation ........................................................................................................ 2-3 2.1.4 Riparian and Upland Vegetation Planting ................................................................. 2-3 2.1.5 Temporary Staging Areas, Access Roads, and Water Crossings ................................ 2-4 2.1.6 New Groundwater Well and Removal of Existing Infrastructure ..............................
    [Show full text]
  • Floodplain Restoration and Storm Water Management: Guidance and Case Study
    Floodplain Restoration and Storm Water Management: Guidance and Case Study Prepared by: Chagrin River Watershed Partners, Inc. Biohabitats P.O. Box 229 2026 Murray Hill Road, Room 107 Willoughby, Ohio 44094 Cleveland, OH 44106 (440) 975-3870 216.921.4430 (440) 975-3865 (fax) 216.751.2087 (fax) www.biohabitats.com www.crwp.org Floodplain Restoration and Storm Water Management: Guidance and Case Study Page 2 Acknowledgements This report was prepared by the Chagrin River Watershed Partners, Inc. (CRWP) under award LEPF 05 -12 from the Lake Erie Protection Fund, with funding made possible by the sale of the Lake Erie Number Plates. The statements, findings, conclusions and recommendations are those of the author(s) and do not necessarily reflect the views of the Ohio Lake Erie Commission. Additional support for this report was provided by the Members of CRWP through their annual Member dues. CRWP is a non-profit technical organization formed by the townships, villages, cities, counties, and park districts of the Chagrin watershed to develop and implement innovative solutions to address current, and minimize new, flooding, erosion, and water quality costs and to control the increasing infrastructure costs associated with urban/suburban development. CRWP provides Members with advice and assistance on zoning and subdivision codes, implementation of these codes, development plan review, and other best practice implementation at Member direction. Cover Photographs. Top Left: Floodplain Restoration in Germany (Photo by: Unknown from internet website)
    [Show full text]
  • FINAL Consensus Recommendations to Improve Protocols 2 and 3 For
    FINAL Approved by WQGIT: October 26, 2020 Consensus Recommendations to Improve Protocols 2 and 3 for Defining Stream Restoration Pollutant Removal Credits Photo Courtesy: Joe Berg Drew Altland, Chris Becraft, Joe Berg, Ted Brown, Josh Burch, Denise Clearwater, Jason Coleman, Sean Crawford, Barbara Doll, Jens Geratz, Jeremy Hanson, Jeff Hartranft, John Hottenstein, Sujay Kaushal, Scott Lowe, Paul Mayer, Greg Noe, Ward Oberholzer, Art Parola, Durelle Scott, Bill Stack, Joe Sweeney, and Jeff White October 27, 2020 Prepared by: David Wood and Tom Schueler, Chesapeake Stormwater Network Recommendations to Improve the Floodplain Restoration Protocols in the Chesapeake Bay Watershed Executive Summary Two groups of more than 25 stream experts have worked over the last year on how to better apply protocols 2 and 3 to integrated stream and floodplain restoration projects (FR) (Section 1). Floodplain restoration can be achieved using two basic techniques to reconnect incised streams to their floodplains. The first approach, termed legacy sediment removal (FR- LSR), removes sediments to lower the floodplain surfaces, increasing out-of-bank flow and re-establishing the hyporheic exchange zone by reconnecting the floodplain with the hyporheic aquifer. The second approach, known as raising the stream bed (RSB), involves several techniques to raise the elevation of an incised stream channel and shallow groundwater, thereby increasing the volume of runoff diverted into the floodplain for treatment. These two approaches are often used in combination. The group came to consensus on the key terms, definitions and qualifying conditions for both floodplain restoration design approaches (Section 3). The groups reviewed the considerable research conducted over the last decade on the sediment and nutrient dynamics associated with FR projects (Section 4) and concluded that: Denitrification can be enhanced when the hyporheic exchange zone is expanded, floodplains are connected to hyporheic aquifers and runoff, and roots and other organic matter provide a carbon source.
    [Show full text]