2020 Rocky River Mainstem and Abram Creek Biological, Water Quality, and Habitat Study
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2020 Rocky River Mainstem and Abram Creek Biological, Water Quality, and Habitat Study Rocky River RM 2.50 at the Hilliard and I-90 bridges, October 12, 2020 Water Quality and Industrial Surveillance Environmental Assessment Group February 2021 2020 Rocky River Mainstem and Abram Creek Biological, Water Quality, and Habitat Study February 26, 2021 Table of Contents List of Figures .................................................................................................................................. ii List of Tables ................................................................................................................................... ii Introduction .................................................................................................................................... 1 Water Chemistry and Bacteriological Sampling ............................................................................... 9 Methods ....................................................................................................................................... 9 Results and Discussion ............................................................................................................... 10 Habitat Assessment ...................................................................................................................... 18 Methods ..................................................................................................................................... 18 Results and Discussion ............................................................................................................... 19 Fish Community Biology Assessment ............................................................................................ 21 Methods ..................................................................................................................................... 21 Results and Discussion ............................................................................................................... 23 Macroinvertebrate Community Biology Assessment .................................................................... 31 Methods ..................................................................................................................................... 31 Results and Discussion ............................................................................................................... 32 Conclusions ................................................................................................................................... 36 Acknowledgments ......................................................................................................................... 39 References ..................................................................................................................................... 39 i 2020 Rocky River Mainstem and Abram Creek Biological, Water Quality, and Habitat Study February 26, 2021 List of Figures Figure 1. 2020 Rocky River Mainstem and Abram Creek Sampling Locations ................................. 3 Figure 2. Rocky River Land Cover Map. ........................................................................................... 8 Figure 3. Rocky River Flow Data ..................................................................................................... 10 Figure 4. Longitudinal geomean E. coli densities on the Rocky River, 2014-2020. ........................ 12 Figure 5. Rocky River RM 4.20 Summer 2020 Temperatures. ........................................................ 13 Figure 6. Rocky River RM 4.20 Dissolved Oxygen Daily Swings. ..................................................... 16 Figure 7. Longitudinal geomean concentrations of total phosphorus and DIN on the Rocky River 2014-2020. .................................................................................................................................... 17 Figure 8. Longitudinal geomean concentrations of total phosphorus and DIN on Abram Creek 2012-2020. .................................................................................................................................... 18 Figure 9. Longitudinal fish community biology scores Rocky River mainstem 1992-2020. .......... 26 Figure 10. Longitudinal IBI scores Abram Creek 1997-2020. ....................................................... 27 Figure 11. Low-head dam at Abram Creek RM 0.90. ..................................................................... 27 Figure 12. CHIA drop structure and culvert outlet at Abram Creek RM 1.0. ................................. 28 Figure 13. Rocky River and Abram Creek QHEI and IBI scores. ..................................................... 29 Figure 14. Rocky River and Abram Creek IBI scores plotted against percent urban land use and percent impervious surface. ....................................................................................................... 30 Figure 15. Rocky River Mainstem Macroinvertebrate Community Structure ................................ 33 Figure 16. Longitudinal trends of the ICI, qualitative EPT taxa richness, and qualitative sensitive taxa richness in the Rocky River mainstem 1997-2020.. ............................................................... 34 Figure 17. Longitudinal trends of the ICI in Abram Creek 1992-2020. .......................................... 35 Figure 18. Rocky River Watershed 2020 IBI and ICI scores plotted against drainage area. .......... 38 List of Tables Table 1. Rocky River Mainstem and Abram Creek Sampling Locations. .......................................... 2 Table 2. Beneficial Use Designations for the Rocky River and Abram Creek. .................................. 4 Table 3. NPDES Permits within the Rocky River watershed. ............................................................ 5 Table 4. 2020 Rocky River Mainstem and Abram Creek E. coli Densities (MPN/100ml) ............... 11 Table 5. Abram Creek RM 3.72 Field DO exceedances (mg/L). .................................................... 14 Table 6. 2020 Rocky River Mainstem and Abram Creek Nutrient Analysis .................................... 15 Table 7. 2020 Rocky River Mainstem and Abram Creek QHEI Scores and Physical Attributes ..... 20 Table 8. IBI Metrics ........................................................................................................................ 23 Table 9. Fish Community Biology Scores in the EOLP Ecoregion. .................................................. 23 Table 10. 2020 Fish Community Assessment Scores. .................................................................... 24 Table 11. ICI Metrics. .................................................................................................................... 31 Table 12. Invertebrate Community Index (ICI) Range for EOLP Ecoregion. ................................. 31 Table 13. 2020 Rocky River and Abram Creek Macroinvertebrate Results. ................................... 32 Table 14. 2020 Rocky River Mainstem and Abram Creek Survey Results ...................................... 36 ii 2020 Rocky River Mainstem and Abram Creek Biological, Water Quality, and Habitat Study February 26, 2021 Introduction The Rocky River is located just west of Cleveland, flowing northward from its headwaters near Hinkley (East Branch) and Medina (West Branch) until its confluence with Lake Erie. In 2020, the Northeast Ohio Regional Sewer District (NEORSD) conducted a full biological and water quality study on the Rocky River inside the NEORSD service area. The objective of this study was to evaluate the impacts of combined sewer overflows (CSOs) and other water quality issues, evaluate attainment of Ohio’s Water Quality Standards, and determine spatial and temporal water quality trends in the watershed. Sampling at River Mile (RM) 8.30 and RM 2.50 is required by the Ohio Environmental Protection Agency (Ohio EPA) National Pollution Discharge Elimination System (NPDES) Permit No. 3PA00002*HD. Data from this study may also be used to perform regulatory tasks by the Ohio Environmental Protection Agency (EPA). This report will focus on the Rocky River mainstem, which forms at the confluence of the East and West branches at RM 12.10, as well as its one major tributary, Abram Creek that joins the Rocky River at RM 10.38. The NEORSD manages sewage conveyance and treatment through its major interceptor sewers and three wastewater treatment plants. The NEORSD also manages local stormwater runoff, flooding, and erosion issues through its Regional Stormwater Management Program. Cities that participate in the Regional Stormwater Management Program in the Rocky River mainstem watershed include Berea, Brook Park, Middleburg Heights, and Cleveland. These cities also have wastewater services provided by the NEORSD. All cities listed here hold Ohio EPA NPDES Municipal Separate Storm Sewer Systems (MS4) general permits for which the NEORSD assists in numerous control measures included in the stormwater management and illicit discharge programs. Sampling was conducted by NEORSD Level 3 Qualified Data Collectors certified by the Ohio EPA in Fish Community Biology, Benthic Macroinvertebrate Biology, Chemical Water Quality, and Stream Habitat Assessment as explained in the 2020 Rocky River Environmental Monitoring study plan approved by Ohio EPA on June 15, 2020. All sampling and environmental assessments occurred between June 15, 2020 and September 30, 2020 (through October 15 for fish community