DOCSLIB.ORG

Sedimentological Response of the 2007 Removal of a Low-Head Dam, Ottawa River, Toledo, Ohio

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Sedimentological Response of the 2007 Removal of a Low-Head Dam, Ottawa River, Toledo, Ohio SEDIMENTOLOGICAL RESPONSE OF THE 2007 REMOVAL OF A LOW-HEAD DAM, OTTAWA RIVER, TOLEDO, OHIO Nathan Harris A Thesis Submitted to the Graduate College of Bowling Green State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2008 Committee: James E. Evans, Advisor Enrique Gomezdelcampo Sheila J. Roberts ii ABSTRACT James E. Evans, Advisor The Secor dam was a low-head dam that was 17m wide and 2.5 m tall on the Ottawa River in Toledo, Ohio. The dam was removed for liability reasons and to facilitate improvements in water quality and fisheries habitat on November 19, 2007. This study documents the fluvial response of dam removal using: (1) repeated high resolution channel surveying with a total station, (2) differential GPS measurements of bedform migration, (3) bedload sampling using a Helley-Smith bedload trap, (4) multiple cores and (5) grain size analyses of the channel substrate. The research also examined the applicability of the conceptual channel evolution model of Doyle et al. (2003) and the predictive success of Dam Removal Express Assessment model (DREAM-1) of Cui et al. (2006). The results highlight the impact of reservoir sediment characteristics in fluvial responses to dam removal. The Secor dam only trapped sand-sized bedload, thus rather than the initial flush of suspended load sediment, the response was rapid incision and mobilization of the material from the upstream delta of the former impoundment. The breaching of the dam resulted in rapid upstream migration of a diffuse nick-zone approximately 10-m in length and downstream migration of a sediment wave that translated at rates up to 0.5 m/hr. Within five months, an estimated 514-m3 of sediment had been removed from the former delta and was redistributed into pools immediately upstream and downstream of the former dam. Channel incision was the dominate process over the first two weeks of the study, with net incision as much as approximately 1-m in some locations. One month after removal, the channel iii began to slowly widen and widening has been the dominate process during the subsequent 4 months. The Secor dam removal differed fundamentally from other dam removals in the literature for the following reasons: (1) the impounded sediment was relatively homogenous, (2) a well defined channel already existed behind the impoundment, (3) the substrate was cohesionless and (4) incision was dominated by nick-zone migration not nick-point migration. As a result, channel evolution occurred quickly, mobilizing sediment from the former delta almost immediately, as opposed to other studies which have reported erosion from the upstream delta taking years to decades. Thus, the channel evolution model proposed by Doyle et al. (2003) failed to predict the initial phases of removal of the Secor dam, which was dominated by uniform degradation of the channel bed behind the dam instead of evolving via nick-point migration. The DREAM model adequately predicted the net volume of sediment removed from the former impoundment, only differing from the estimated value by -1.7 % The model, however, may not be used during the later phases of dam removal because the model failed to predict channel widening which may result in an underestimation of the volume of sediment removed from the former impoundment. iv For my wife and parents. v ACKNOWLEDGMENTS First and foremost, I wish to thank God for directing me to Bowling Green State University in the first place; completion of this thesis is a living example that with God all things are possible. Secondly, I wish to thank my wife, Kylie, for her constant patience and understanding as we completed this next phase of our life together. I would also like to thank my parents, David and Alena Harris, who first gave me the opportunity to attend college 6 years ago and continue to inspire me in so many areas of my life. The completion of this project was made possible through the dedicated efforts of my advisor, Dr. James E. Evans and committee members Dr. Enrique Gomezdelcampo and Dr. Shelia J. Roberts. Thank you, also, to the following research partners: The Village of Ottawa Hills, Toledo Metropolitan Area Council of Governments, University of Toledo, Ohio Environmental Protection Agency, US Army Corps of Engineers, and Ohio Department of Transportation, as well as to the Ohio Geological Survey for use of the vibracorer. In addition, I would like to thank the Ohio Environmental Protection Agency, the Geological Society of America, and Bowling Green State University for the funding of this project. I would also like to extend special gratitude to all those who graciously dedicated countless hours to assist me with data collection. Without the selfless giving of these people, the completion of this project would not have been possible: Dr. James Evans, Andrew Clark, Steve Sabo, Jessica Lawrence, Steven King, Mary Scanlan, Allen Adams, Chris Pepple, Thor Zednik , Kylie Harris, Matt Bradford, Zach Mueller, and Colleen O’Shea. It is the time spent with the people listed previously that truly made my graduate experience at Bowling Green State University unforgettable. vi TABLE OF CONTENTS Page INTRODUCTION ................................................................................................................. 1 Implications of dam emplacement and removal……………………………………. 2 Modeling dam removal……………………………………………………………… 10 Purpose……………………………………………………………………………… 10 BACKGROUND…………………………………………………………………………… 12 Bedrock Geology…………………………………………………………………... 12 Structural Geology…………………………………………………………………. 12 Glacial Geology……………………………………………………………………. 14 METHODS…………. ...................................................................................................…… 17 Ottawa River……………………………………………………………………….. 17 Secor Dam…………………………………………………………………………. 22 Previous Work……………………………………………………………………… 25 Secor Dam Removal………………………………………………………………... 28 Field Survey Methods................................................................................................ 30 Analysis of Survey Data……………………………………………………. 32 Error Analysis………………………………………………………………. 33 Sediment Cores……………………………………………………………………… 40 Bedload Traps ............................................................................................................ 41 Grain Size Analysis.................................................................................................... 41 DREAM-1 Model...................................................................................................... 47 Zero Process................................................................................................... 57 vii Description of model input............................................................................ 57 RESULTS…………… .......................................................................................................... 64 Lithofacies…….......................................................................................................... 64 Fluvial Pavement Facies................................................................................ 64 Interpretation...................................................................................... 64 Cross bedded facies........................................................................................ 64 Interpretation...................................................................................... 64 Rippled Sand Facies....................................................................................... 66 Interpretation...................................................................................... 66 Inundite Facies............................................................................................... 66 Interpretation...................................................................................... 66 Mud Drape Facies.......................................................................................... 67 Interpretation...................................................................................... 67 Bioturbated Sand Facies................................................................................ 67 Interpretation...................................................................................... 67 Massive Sand Facies...................................................................................... 68 Interpretation...................................................................................... 68 Overbank mud Facies.................................................................................... 68 Interpretation...................................................................................... 68 Reservoir Sediment Characteristics ........................................................................... 68 Former Ottawa River Channel Characteristics .......................................................... 74 Downstream Channel Characteristics........................................................................ 77 Dam Removal Observations ...................................................................................... 78 viii Week 1........................................................................................................... 78 Week 2........................................................................................................... 82 Week 4........................................................................................................... 94 Week 6..........................................................................................................
Load more

Recommended publications
  • Maumee AOC Habitat Restoration
    Maumee AOC Habitat Restoration The Maumee River habitat restoration project at Penn 7 will improve habitat for fish and wildlife by creating coastal wetlands and forested upland along the Maumee River. Project Location and 30% Design Concept Map • Northern Shoreline of the Maumee River in Toledo, Ohio Project Highlights Create 8.5 acres of emergent coastal wetland and 6.7 acres of submerged coastal wetland Improve roughly 59 acres of habitat including adjacent upland areas Control invasive plant species and plant native vegetation Install water control and fish habitat connectivity structures Funding is provided by the Great Lakes Restoration Initiative (GLRI) and U.S. Environmental Protection Agency through the National Oceanic and Atmospheric Administration (NOAA) - Great Lakes Commission (GLC) Regional Partnership The City of Toledo is implementing this project with assistance from their consultant, Hull and Associates Environmental Benefits Economic Benefits Community Benefits New fish and wildlife habitat Regional benefits to Downtown nature space Improved hydrologic eco-tourism, birding Improved water quality and connectivity and fishing ecosystem health Background of the Area of Concern (AOC) Located in Northwest Ohio, the Maumee AOC is comprised of 787 square miles that includes approximately the lower 23 miles of the Maumee River downstream to Maumee Bay, as well as other waterways within Lucas, Ottawa and Wood counties that drain to Lake Erie, such as Swan Creek, Ottawa River (Ten Mile Creek), Grassy Creek, Duck Creek, Otter Creek, Cedar Creek, Crane Creek, Turtle Creek, Packer Creek, and the Toussaint River. In 1987 the Maumee AOC River was designated as an AOC under the Great Lakes Water Quality Agreement.
    [Show full text]
  • Plan Summary the Toledo Metropolitan Area Council of Governments 300 Martin Luther King Jr
    On2015-2045 the TRANSPOR MoveTATION PLAN Plan Summary The Toledo Metropolitan Area Council of Governments 300 Martin Luther King Jr. Drive, Suite 300 Toledo OH 43604 Mailing address: PO Box 9508, Toledo OH 43697-9508 December, 2016 419.241.9155 Fax: 419.241.9116 E-mail: [email protected] www.tmacog.org Toledo Metropolitan Area Council of Governments Table of Contents TMACOG Transportation Planning Committee - Plan Task Force On the Move: 2015-2045 Transportation Plan Mike Beazley, City of Oregon Plan Summary Gordon Bowman, Village of Pemberville Kent Bryan, CT Consultants Joe Camp, City of Maumee Introduction...................................................................................................................................................1 Joe Cappel, Toledo-Lucas County Port Authority 2045 Projects Edward Ciecka, City of Rossford Committed Project List.............................................................................................................................. 3 Kris Cousino, City of Toledo, Vice Chair Plan Priority Project List............................................................................................................................ 10 Brian Craft, City of Bowling Green Public Works Plan System Preservation List.................................................................................................................. 16 Patrick Etchie, The Mannik & Smith Group Inc. Plan System Preservation List - Bridges.................................................................................................
    [Show full text]
  • Visitor Guide Visit Metroparkstoledo.Com for a Complete List of Programs and Camps
    FALL 2019 Visitor Guide Visit MetroparksToledo.com for a complete list of programs and camps. #getoutsideyourself Get Outside Yourself. Where to Enjoy the Show It’s time. That crispness in the air, the crunch of leaves underfoot, the sound of your nylon jacket as you head out down a trail. Every day of autumn brings new sights, sounds and smells to discover in your Metroparks. Time Get to get outdoors and enjoy the show. If you are enrolled in the Trail Challenge program, autumn is prime time to hike, bike or paddle miles toward your goal. With a June 2020 deadline, there’s plenty of time Outside to sign up and get started. Whether you are tracking your miles or just wandering, here are some great destinations to consider. PEARSON AND SECOR East or West of Toledo, the big woods of Yourself. Pearson and Secor Metroparks, respectively, should be on any leaf-peeper’s itinerary. The kaleidoscope of colors and lengthy walking trails make these parks prime locations for a hike. THE RIVER PARKS The first flashes of fall colors are likely to be on the edges of streams. The five Metroparks on the Maumee River offer scenic views of water and wildlife. Providence, Bend View and Farnsworth are connected by the Towpath Trail, one of the longest trails in the park system. Side Cut in Maumee and Middlegrounds in down- town Toledo get you up close to the big river for stunning views of nature as well as the city skyline. MEET THE MIGRATION Shorebirds love the new Howard Marsh Metropark in Jerusalem Township.
    [Show full text]
  • 1987 Report on Great Lakes Water Quality Appendix A
    Great Lakes Water Quality Board Report to the International Joint Commission 1987 Report on Great Lakes Water Quality Appendix A Progress in Developing Remedial Action Plans for Areas of Concern in the Great Lakes Basin Presented at Toledo, Ohio November 1987 Cette publication peut aussi Gtre obtenue en franGais. Table of Contents Page AC r ‘LEDGEMENTS iii INTRODUCTION 1 1. PENINSULA HARBOUR 5 2. JACKFISH BAY 9 3. NIPIGON BAY 13 4. THUNDER BAY (Kaministikwia River) 17 5. ST. LOUIS RIVER/BAY 23 6. TORCH LAKE 27 7. DEER LAKE-CARP CREEK/RIVER 29 8. MANISTIQUE RIVER 31 9. MENOMINEE RIVER 33 IO. FOX RIVER/SOUTHERN GREEN BAY 35 11. SHEBOY GAN 41 12. MILWAUKEE HARBOR 47 13. WAUKEGAN HARBOR 55 14. GRAND CALUMET RIVER/INDIANA HARBOR CANAL 57 15. KALAMAZOO RIVER 63 16. MUSKEGON LAKE 65 17. WHITE LAKE 69 18. SAGINAW RIVER/BAY 73 19. COLLINGWOOD HARBOUR 79 20. PENETANG BAY to STURGE1 r BAY ( EVER 0 ir c 83 21. SPANISH RIVER 87 22. CLINTON RIVER 89 23. ROUGE RIVER 93 24. RIVER RAISIN 99 25. MAUMEE RIVER 101 26. BLACK RIVER 105 27. CUYAHOGA RIVER 109 28. ASHTABULA RIVER 113 i TABLE OF CONTENTS (cont.) 29. WHEATLEY HARBOUR 117 30. BUFFALO RIVER 123 31. EIGHTEEN MILE CREEK 127 32. ROCHESTER EMBAYMENT 131 33. OSWEGO RIVER 135 34. BAY OF QUINTE 139 35. PORT HOPE 145 36. TORONTO HARBOUR 151 37. HAMILTON HARBOUR 157 38. ST. MARYS RIVER 165 39. ST. CLAIR RIVER 171 40. DETROIT RIVER 181 41. NIAGARA RIVER 185 42. ST. LAWRENCE RIVER 195 ANNEX I LIST OF RAP COORDINATORS 1203 GLOSSARY 207 ii Acknowledgements Remedial action plans (RAPs) for the 42 Areas of Concern in the Great Lakes basin are being prepared by the jurisdictions (i.e.
    [Show full text]
  • The River Runs Through It
    THE PRESIDENT’S COMMISSION ON THE RIVER The River Runs Through It UT Report to the President December 15, 2006 Table of Contents Introduction and Executive Summary……………………………………………………3 Charge to the Commission ……………………………………………………………… Commission on the River Membership ………………………………………………… Ottawa River Overview ………………………………………………… UT Master Plan—Implications for the Ottawa River ……………………………………… Task Force Team Reports: Team One – Communications, Records, Outreach and Engagement…………… Team Two – River Habitat Restoration, Development and Beautification… Team Three – Development and Grant Funding Opportunities………………… Overview of Planning Charette …………………………………………………… Overview of Michigan State Site Visit………………………………………………. Overview of UT Student Focus Groups …………………………………………………. Overview of University/Community Forum ……………………………………….. Major Findings/Observations from the 1982 Ottawa River Study………………………. Funding and Grant Opportunities………………………………………………………… Recommendations of the Commission: Projected Costs ……………………………………………………………………….. Conclusion ……………………………………………………………………………… Appendix Initial Conceptual Visions ……………………………………………… Planning Charette – Survey Results…………………………………………………… Student Focus Groups – Survey Results ……………………………………………… Community Forum – Survey Results ……………………………………………… Potential Sponsors and Programs ……………………………………………… 1 The River Runs Through It... Report to the President River Runs Through It Introduction and Executive Summary The University of Toledo is an institution with many great strengths that can offer a world
    [Show full text]
  • Variation in Trace Metal Concentrations in a Fluvial Environment, Ottawa River, Toledo, Ohio
    VARIATION IN TRACE METAL CONCENTRATIONS IN A FLUVIAL ENVIRONMENT, OTTAWA RIVER, TOLEDO, OHIO. Mitra B. Khadka A Thesis Submitted to the Graduate College of Bowling Green State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2010 Committee: Sheila J. Roberts, Advisor James E. Evans Enrique Gomezdelcampo ii ABSTRACT Sheila J Roberts, Advisor Surface sediment samples were collected from a 1000 m meander reach of the Ottawa River, Ohio and analyzed for trace metals (Zn, Pb, Sr, Mn, Cu, Cr, Co, Ba, Ti, Cd, and Hg) by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) to determine the local variability in their concentrations between geomorphic features. Eight metals (Zn, Pb, Sr, Mn, Cu, Cr, Co, and Ba) show significantly different concentrations between five fluvial geomorphic features namely, flood plains, point bars, lateral bars, pools, and riffles. Among the features, flood plains and lateral bars are places where flows are decelerated due to surface roughness and vegetation cover, promoting the deposition of fine-grained sediments and organic matter. Thus, flood plains and lateral bars consistently exhibit the highest metal concentrations. The lowest metal concentrations in point bars are attributed to relatively coarse-grained sediment and low organic matter content. The difference in mean metal concentration between flood plains and point bars ranges from 5 times for Co to 12.5 times for Pb. It was found that Zn, Sr, Mn, Cu, Cr, Co, and Ba are influenced by similar transport and interaction processes, and possibly have common sources, while Pb shows a weak to non-significant association with other metals indicating either a different mode of transport or separate anthropogenic sources.
    [Show full text]
  • Ottawa River
    OT1 Empties into: North Maumee Bay OT1 Mouth: Erie Township, MI Length: 20 miles (19 miles in Ohio) Elevation at source: 738 feet above sea level (includes Ten Mile Creek) Elevation at mouth: 573 feet above sea level Average fall: 4 feet per mile 8-digit HUC: 04100001 8-digit HUC name: Ottawa-Stony Number of Access Sites: 8 Ottawa River The Ottawa River is a short tributary that empties into the North Maumee Bay (Lake Erie) less than one mile north of the Ohio-Michigan state line and only 2.3 miles north of the Maumee River mouth. With the exception of the mouth and the river’s first three-quarters of a mile, the 20-mile Ottawa River flows within Lucas County. The river begins at the confluence of the Ten Mile and North Ten Mile creeks in Sylvania. The North Ten Mile Creek is a 4-mile tributary that originates in Michigan. The 27-mile long Ten Mile Creek flows entirely within Ohio, although it meanders within 160 feet of the state line. The Ottawa River Watershed is 220.9 square miles and drains portions of Fulton and Lucas counties in Ohio and portions of Lenawee and Monroe counties in Michigan. The Ottawa River is named after the Ottawa Indians, a Native American tribe that once inhabited the area. ‘Ottawa’ is an anglicized spelling of the word ‘adawe,’ which means “trader” or “to trade.” The river also shares its name with another western Lake Erie Watershed tributary. The other Ottawa River is a 50-mile tributary that rises in Hardin County, flows through Allen and Putnam counties and empties into the Auglaize River, which then flows into the Maumee River.
    [Show full text]
  • Heldman Ditch-Ottawa River Huc-12 (04100001 03 07)
    Version 1.0 June, 2017 Nine-Element Approved: August 2, 2017 Nonpoint Source Implementation Strategic Plan (NPS-IS plan) Ottawa River-Frontal Lake Erie Heldman Ditch- Ottawa River HUC-12 (04100001 03 07) Created by: The Olander Park System 3930 Sylvania Ave. Sylvania, OH 43560 Partners for Clean Streams, Inc. P.O. 203 Perrysburg, OH 43552 The Metroparks of the Toledo Area 5100 W. Central Ave. Ottawa Hills, OH 43615 The Nature Conservancy Oak Openings Region Project Office 10420 Old State Line Rd. Swanton, OH 43558 This page intentionally left blank i HELDMAN DITCH-OTTAWA RIVER HUC-12 (04100001 03 07) Table of Contents Acknowledgements ............................................................................................................................................ iv Chapter 1: Introduction ...................................................................................................................................... 1 1.1 Report Background ...................................................................................................................................... 2 1.2 Watershed Profile & History ........................................................................................................................ 2 1.3 Public Participation and Involvement .......................................................................................................... 4 Chapter 2: Heldman Ditch-Ottawa River HUC-12 Watershed Characterization and Assessment Summary..... 6 2.1 Summary Watershed Characterization for Heldman
    [Show full text]
  • Water Trail Master Plan
    Monroe County Water Trail Master Plan July 2014 Monroe County Water Trail Master Plan This Plan was prepared by Monroe County and LIAA. This Plan was funded in part by the Michigan Coastal Zone Management Program, Department of Environmental Quality Office of the Great Lakes and the National Oceanic and Atmospheric Administration, U.S. Department of Commerce. Table of Contents Introduction 1 Regional Context 1 Watersheds Rivers, Streams Creeks and Lakes What is a Water Trail? 4 Water Trails - a Regional & State Perspective 5 Water Trail Planning in the Region Blueways of St. Clair Huron River Water Trail Detroit Heritage River Water Trail Clinton River & St. Clair Coastal Water Trail Water Trail Planning in Michigan Local Initiatives 6 River Raisin Heritage Corridor-East Best Practices 54 Master Plan Access Sites Site Location Appropriateness Summary of the Planning Process 9 Cost Considerations Community Input Environmental Friendly Launch Considerations Gear and Equipment Water Trail Inventory 11 Safety Emergency Assistance Obstacles and Safety Concerns 51 Obstacles Weather and Lake Conditions Leveraging Trails for Economic Development 61 Shipping and Boating Traffic International Waters Facilities and Infrastructure Strategies 63 River and Paddling Etiquette 52 River Etiquette Leave No Trace Next Steps Private Property 66 Monroe County Water Trail Master Plan Introduction Water trails are swiftly becoming a signature feature of outdoor recreation in southeast Michigan. A series of water trails in Monroe County offer very different, but no less picturesque paddling experiences. Veteran kayakers have been paddling the western stretches of the River Raisin for many years, but use of the entire river has not been fully developed for the broader population.
    [Show full text]
  • Program Guide Metroparks Programs: July | August | September 2011
    GetConnected! Program Guide Metroparks Programs: July | August | September 2011 Check out our NEW! | 1 | programs Celebrate Summer! 419-407-9701 | METROPARKSPROGRAMS.COM Contents 3 Welcome/About Metroparks SpecialSpecial EventsEvents pagepapagege 8 4 Metroparks Camps 6 Open for the Season 8 Special Events 9 Autumn Adventure 10 Sunday Sampler 12 Nature Programs 14 Programs for Kids 15 Programs for Scouts 16 Nature Photography Programs 18 Parks & Places 20 History Programs | 2 | 22 Manor House Programs 23 Toledo Botanical Garden Programs NewNew NatureNature PhotographyPhotography EExhibits,xhibits, pagepapagege 1616 23 Lucas Soil & Water Conservation District 23 Nature’s Nursery Programs 24 Volunteer Programs 26 Friends and Partners Programs 28 Members Programs 29 Program Index 33 Contacts Great Park Search page 18 34 Directory, Park Hours, Accessibility Reservations Program reservations: 419-407-9701 Online reservations: MetroparksPrograms.com Program hotline/Cancellations: 419-407-9771 Facility Rentals, page 32 Reservation Form, page 35 Volunteer Services 419-407-9703 PROGRAMS LISTED BY DATE AT METROPARKSPROGRAMS.COM Welcome Pick Your Path And Enjoy The View About Metroparks here are more than 100 miles of trails in the Metroparks of the Toledo Area Metroparks, and each mile is a path to a new adventure. is a regional system of premier T The Sand Duns (Red) Trail at Oak Openings Preserve, natural, historical and cultural for example, leads to a spectacular view of the Girdham Road parklands. A public agency serving Lucas County, Metroparks Sand Dunes. You may even see a red-headed woodpecker maintains parks and conserva- along the way as you pass through some of the best examples tion areas totaling 11,000 acres.
    [Show full text]
  • Tenmile Creek and the Ottawa River Watersheds Fulton and Lucas Counties, Ohio Total Maximum Daily Load Development
    Loading Analysis Plan and Supporting Data Acquisition Needed for the Tenmile Creek and the Ottawa River Watersheds Fulton and Lucas Counties, Ohio Total Maximum Daily Load Development Hill Ditch near mouth, Ottawa River (Toledo) basin. Ohio EPA Technical Report AMS/2011-OTTEN-3 Division of Surface Water Assessment and Modeling Section March 2019 TMDL DEVELOPMENT | AMS/2011-OTTEN-3 Loading Analysis Plan – Tenmile Creek and Ottawa River Watershed March 2019 Introduction This document provides an overview of the information considered in proposing analytical methods to address water quality impairments in the Tenmile Creek and Ottawa River watershed (Fulton and Lucas Counties, Ohio). These recommendations are based on data collected as part of a biological and water quality study in 2011. A description of the project area, sites, data types and methods can be found in the Tenmile Creek and Ottawa River study plan document at (https://epa.ohio.gov/portals/35/tmdl/TenmileStudyPlan2011_Final.pdf). A summary of the study results can be found in the biological and water quality report at (https://epa.ohio.gov/Portals/35/documents/Tenmile_Ottawa_TSD_2015.pdf). Sites in the Tenmile Creek and Ottawa River watershed were assessed for aquatic life use and recreation use. The public water supply use was not assessed since no surface waters are used as a public water supply in this study area. The attainment of aquatic life and recreation use is based on specific restoration targets. This document examines those targets and lays out proposals for addressing each impairment. Where appropriate, methods are outlined to develop total maximum daily loads (TMDL) for specific pollutants.
    [Show full text]
  • View Newsletter
    A publication of Ottawa Hills Local Schools for alumni, families, and Villagers AROUND WINTER 2021 theseHILLS Let the future begin! Learning Commons, science labs, research center to advance academic excellence of all students Inside this issue: Fall sports: A dominant performance Scott, OH students seek common ground Foundation grants support young scientists Quality Profile captures year of challenges, triumphs Photo courtesy of Yarko Kuk/Village Voice of Ottawa Hills Voice Kuk/Village Photo courtesy of Yarko Achieving Mental Goalllls! The Foundation is proud to have helped OH soccer athletes further their mental toughness by sponsoring their participation in the online Dan Abrahams Soccer Academy. The investment paid off this fall. Both the girls’ and boys’ programs defended their TAAC titles and the boys advanced to the Division III Final Four. Now that’s teamwork! Support athletes at Ottawa Hills by donating to the Mindel Family Athletic Fund at ohschoolsfoundation.org insidewinter2021 DEPARTMENTS 5 6 10 District Letter 4 HOME TO HOME CONNECTS KEEPING SCIENCE PROJECTS A FALL TO REMEMBER Campus News 5 SCOTT, OH HIGH SCHOOLS POSSIBLE DURING COVID-19 FOR GREEN BEAR SPORTS Databank 7 Separated by about four Three students are The Green Bears plowed miles of Bancroft Street, carrying out scientific their way through the Art Gallery 7 students at Scott and research usually Toledo Area Athletic Sports 10 Ottawa Hills high schools conducted in university Conference this fall. OH are looking for ways to labs thanks to grant teams shared or captured Foundation News 18 bridge geographic and support from the Ottawa six TAAC titles; six Alumni News 19 other differences.
    [Show full text]