BASINWIDE ASSESSMENT REPORT ROANOKE RIVER BASIN NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Division of Water Quality Environmental Sciences Section April 2005 TABLE OF CONTENTS Page List of Tables...........................................................................................................................................2 List of Figures..........................................................................................................................................2 Overview .................................................................................................................................................5 Roanoke River Subbasin 01 ...................................................................................................................7 Description .................................................................................................................................7 Overview of Water Quality .........................................................................................................8 River and Stream Assessment ..................................................................................................9 Roanoke River Subbasin 02 .................................................................................................................16 Description ...............................................................................................................................16 Overview of Water Quality .......................................................................................................17 River and Stream Assessment ................................................................................................18 Roanoke River Subbasin 03 .................................................................................................................22 Description ...............................................................................................................................22 Overview of Water Quality .......................................................................................................23 River and Stream Assessment ................................................................................................24 Roanoke River Subbasin 04 .................................................................................................................27 Description ...............................................................................................................................27 Overview of Water Quality .......................................................................................................28 River and Stream Assessment ................................................................................................28 Roanoke River Subbasin 05 .................................................................................................................32 Description ...............................................................................................................................32 Overview of Water Quality .......................................................................................................33 River and Stream Assessment ................................................................................................34 Roanoke River Subbasin 06 .................................................................................................................37 Description ...............................................................................................................................37 Overview of Water Quality .......................................................................................................38 River and Stream Assessment ................................................................................................38 Roanoke River Subbasin 07 .................................................................................................................44 Description ...............................................................................................................................44 Overview of Water Quality .......................................................................................................44 River and Stream Assessment ................................................................................................45 Roanoke River Subbasin 08 .................................................................................................................48 Description ...............................................................................................................................48 Overview of Water Quality .......................................................................................................49 River and Stream Assessment ................................................................................................49 Roanoke River Subbasin 09 .................................................................................................................54 Description ...............................................................................................................................54 Overview of Water Quality .......................................................................................................55 River and Stream Assessment ................................................................................................56 NCDENR, DIVISION OF WATER QUALITY BASINWIDE ASSESSMENT REPORT- ROANOKE RIVER BASIN- APRIL 2005 1 Roanoke River Subbasin 10 .................................................................................................................58 Description ...............................................................................................................................58 Overview of Water Quality .......................................................................................................59 River and Stream Assessment ................................................................................................59 References............................................................................................................................................62 Glossary ................................................................................................................................................64 Appendix A Summary of benthic macroinvertebrate data collected from the Roanoke River basin, 1999-2004..................................................................66 Appendix B Benthic macroinvertebrate sampling methods and criteria ..........................................66 Appendix C Fish community assessment.......................................................................................70 Appendix D Habitat evaluations and stream and riparian habitats at fish community monitoring sites in the Roanoke River basin .....................................72 Appendix E Fish community sampling methods and criteria..........................................................76 Appendix F Fish community data collected from the Roanoke River basin, 1990 – 2004......................................................................................................84 Appendix G Fish community metric values from 30 wadeable streams in the Piedmont and Coastal Plain region of the Roanoke River basinwide monitoring program, 2004. ...............................................................85 Appendix H Fish distributional records for the Roanoke River basin .............................................86 Appendix I Water quality at fish community sites in the Roanoke River basin in 2004...............................................................................................................87 Appendix J Web Links ...................................................................................................................89 NCDENR, DIVISION OF WATER QUALITY BASINWIDE ASSESSMENT REPORT- ROANOKE RIVER BASIN- APRIL 2005 2 LIST OF TABLES Table Page 1 Land use in Roanoke River Subbasin 01 ....................................................................................8 2 Waterbodies monitored in Subbasin 01 in the Roanoke River basin for basinwide assessment, 1999 – 2004...........................................................................................9 3 Land use in Roanoke River Subbasin 02.....................................................................................17 4 Waterbodies monitored in Subbasin 02 in the Roanoke River basin for basinwide assessment, 1999 – 2004 ..........................................................................................17 5 Land use in Roanoke River Subbasin 03.....................................................................................22 6 Waterbodies monitored in Subbasin 03 in the Roanoke River basin for basinwide assessment, 1999 – 2004 ..........................................................................................23 7 Land use in Roanoke River Subbasin 04.....................................................................................28 8 Waterbodies monitored in Subbasin 04 in the Roanoke River basin for basinwide assessment, 1999 – 2004 ..........................................................................................28 9 Land use in Roanoke River Subbasin 05.....................................................................................33