*All of the following reports are available for viewing at the Genesee County Health Department:

• Water Quality of the Upper Thread Creek Basin. August 5, 1968 (Water Resources Commission)
• Biological Observations on Gilkey Creek Flint, Michigan. August 22, 1969 & July 11 & 13, 1972 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• 1969 Water Quality Study of the Flint River. September 1970 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Water Quality of the Flint River Upstream from Flint as Influenced by Existing Conditions and by the Proposed Impoundment that will Form Charles Stewart Mott Lake. March 1970 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Water Quality Study of Flint River Tributaries at Flint, Michigan. April 1970. (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Water Quality Survey of Griffen Lake Genesee County, Michigan. 1970 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Water Quality Study of the Flint River. September 1970 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Biological Investigations of Hughes and Lake Drains and Brent Run, Genesee County, Michigan. July 11 & October 16, 1972 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Biological Investigation of Thread Creek Flint, Michigan. July 13, 1972 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Water Quality Survey and Caged Fish Study, Swartz Creek, Carman Creek and Call Drain, Genesee County, Michigan. May & June 1973 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Flint River Tributaries Study. August 12 & 13, 1974 (Water Resources Commission, Bureau of Water Management, Dept. of Natural Resources)
• Flint River Study. August 6 & 7, 1974 (Department of Natural Resources, Environmental Protection Bureau)
• Biological Survey of the Flint River and Tributaries (Vicinity of Flint) From Carpenter Road to Michigan Route 13. July-September, 1974 (Department of Natural Resources, Environmental Protection Bureau)
• Flint River Study. May 23-24, 1978 and August 1-2, 1978 (Department of Natural Resources, Environmental Services Division)
• Biological Investigation of Hughes and Lake Drains and Brent Run Genesee County, Michigan. July 26, 1977 (Michigan Department of Natural Resources, Water Quality Division)
• Mini Screening Test for Acute Effluent Toxicity, Flint WWTP Flint, Michigan. March 18-19, 1982 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Qualitative Macroinvertebrate Survey of Swartz Creek in the Vicinity of the Grand Blanc Landfill, Genesee County. May 16, 1984 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Sediment, Water and Qualitative Biological Survey in the Vicinity of the Grand Blanc Landfill, Genesee County, Michigan. June 11, 1985 (Michigan Department of Natural Resources, Surface Water Quality Division)
• Biological Survey of Briggs Drain and Silver Creek Saginaw County, Michigan. July 27, 1988 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of Rush Creek Shiawassee County, Michigan. September 19, 1989 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of Swartz Creek and West Branch Creek Genesee County, Michigan. August 9, 1989 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of Thread Creek Genesee County, Michigan. August 3, 1989 (Michigan Department of Natural Resources, Surface Water Quality Division)
• Biological Survey of Gilkey Creek, Genesee County, Michigan. August 3, 1989 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of Swartz Creek in the Vicinity of the Grand Blanc Landfill, Genesee County, Michigan. August 21, 1990 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of Birch Run Drain, Saginaw County. August 3, 1990 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of the Upper South Branch of the Flint River, Lapeer County. September 9, 1990 (Michigan Department of Natural Resources, Surface Water Quality Division)
• A Biological Survey of the Flint River and Selected Tributaries, Genesee, Lapeer, and Saginaw Counties, Michigan. July 12-15, 1993 (Michigan Department of Natural Resources, Surface Water Quality Division)
• Chronic Toxicity Assessment of Ambient Flint River and Butternut Creek Water Genesee and Saginaw Counties, Michigan. June 4-11, 1993 (Michigan Department of Natural Resources, Surface Water Quality Division)
• Chronic Toxicity Assessment of Ambient Swartz Creek, Farmers Creek, and Thread Creek Waters, Genesee and Lapeer Counties, Michigan. May 21-28, 1993 (Michigan Department of Natural Resources, Surface Water Quality Division)
• Ambient Chronic Toxicity Assessment of Butternut Creek, Genesee County, Otisville, Michigan. July 8-15, 1994 & September 15-21, 1995 (Michigan Department of Natural Resources, Surface Water Quality Division)