American Bottom Watershed Plan - FINAL
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American Bottom Watershed Plan - FINAL 1 American Bottom Watershed Plan - FINAL This page intentionally left blank. 2 American Bottom Watershed Plan - FINAL American Bottom Watershed Plan A Guide to Protecting and Restoring Watershed Health December 2020 Prepared by: 3 N High Street Belleville, IL 62220 www.heartlandsconservancy.org Phone: 618-566-4451 for 3 American Bottom Watershed Plan - FINAL This page intentionally left blank. 4 American Bottom Watershed Plan - FINAL ACKNOWLEDGMENTS Funding for the American Bottom Watershed-Based Plan was provided by Madison County through a Professional Services Contract with the Madison County Stormwater and Floodplain Program and HeartLands Conservancy. The contract funded outreach and stakeholder meetings, community flood survey, and the completion of the watershed plan. Madison County also funded the completion of water resource inventory by the United States Army Corps of Engineers. Key partners and stakeholders include, Madison County, HeartLands Conservancy, U.S. Army Corps of Engineers, Madison County Soil and Water Conservation District (SWCD), Madison County Stormwater Commission, Juneau Associates Inc., America’s Central Port, Granite City, Hartford, Pontoon Beach, Edwardsville, Madison, Metro East Sanitary District, Madison County Highway Department, Collinsville Township, Nameoki Township, Chouteau Township, Venice Township, and Granite City Township. These stakeholders played an important role in providing input on watershed goals and objectives, water quality and flooding issues, Best Management Practices, and potential recommendations. 5 American Bottom Watershed Plan - FINAL Table of Contents ACKNOWLEDGMENTS ................................................................................................................................... 5 EXECUTIVE SUMMARY .................................................................................................................................. 9 SECTION 1: INTRODUCTION ........................................................................................................................ 21 American Bottom Watershed ................................................................................................................. 22 Purpose ................................................................................................................................................... 24 United States Environmental Protection Agency Nine Elements ....................................................... 24 Illinois Environmental Protection Agency Nonpoint Source Pollution Program ................................ 24 Madison County Stormwater Plan ...................................................................................................... 25 Authority ............................................................................................................................................. 25 Methodology ........................................................................................................................................... 26 Watershed Data Collection and Analysis ............................................................................................ 27 Stakeholder Engagement .................................................................................................................... 28 Key Issue Identification and Goal Setting ........................................................................................... 28 Critical Areas Identification ................................................................................................................. 28 Management Measures and Targets .................................................................................................. 28 Implementation Plan .......................................................................................................................... 29 Illinois Environmental Protection Agency Review .............................................................................. 29 Stormwater Commission and County Board Review .......................................................................... 29 Integration into Madison County Stormwater Management Plan ..................................................... 29 SECTION 2: GOALS, OBJECTIVES, AND TARGETS ......................................................................................... 30 Goals and Objectives ............................................................................................................................... 30 GOAL 1: REDUCE FLOODING AND MITIGATE FLOOD DAMAGE .............................................................. 32 GOAL 2: IMPROVE SURFACE AND GROUND WATER QUALITY ............................................................... 34 GOAL 3: PROMOTE ENVIRONMENTALLY SENSITIVE DEVELOPMENT PRACTICES ................................... 36 GOAL 4: SUPPORT HEALTHY FISH AND WILDLIFE HABITAT AND RECREATION ...................................... 37 GOAL 5: DEVELOP ORGANIZATIONAL FRAMEWORKS TO IMPLEMENT WATERSHED GOALS................. 37 GOAL 6: CONDUCT EDUCATION AND OUTREACH .................................................................................. 38 Watershed Impairment Reduction Targets ............................................................................................ 38 SECTION 3: ISSUES AND CRITICAL AREAS.................................................................................................... 44 6 American Bottom Watershed Plan - FINAL Key Issues Identified ............................................................................................................................... 44 Flooding ............................................................................................................................................... 44 Surface and ground water quality ...................................................................................................... 48 Land Cover and Development ............................................................................................................. 53 Habitat ................................................................................................................................................ 54 Organizational needs/issues ............................................................................................................... 55 Information and Outreach .................................................................................................................. 56 Critical Areas ........................................................................................................................................... 58 Critical Stream Reaches .......................................................................................................................... 58 Critical Logjam Areas ............................................................................................................................... 58 Critical Riparian Areas ............................................................................................................................. 59 Critical Wetland Areas ............................................................................................................................ 59 Critical Flooding Areas ............................................................................................................................ 59 SECTION 4: OVERVIEW OF MANAGEMENT MEASURES .............................................................................. 61 Programmatic Management Measures .................................................................................................. 61 Site-Specific Management Measures ..................................................................................................... 66 Urban Management Measures ........................................................................................................... 66 Selected Urban Management Measures (BMPs). ............................................................................... 69 Agricultural Measures ......................................................................................................................... 70 ................................................................................................................................................................ 72 Stream and Lake Measures ..................................................................................................................... 73 SECTION 5: MANAGEMENT MEASURES ACTION PLAN ............................................................................... 75 Management Measure Selection ............................................................................................................ 75 All Management Measures recommended ............................................................................................ 76 Summary of Site-Specific Management Measures recommended ........................................................ 77 Locations of Site-Specific Management Measures ................................................................................. 80 Specific project locations .................................................................................................................... 82 SECTION 6: INFORMATION & EDUCATION PLAN ...................................................................................... 101 Information and Education Process