Runyan Lake Inc.

The lake association for the entire community of Runyan Lake
located in Tyrone Township, Livingston County, Michigan.



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Fish and Water Studies, & Reports


Click any link below for information                               


Fish and Water Studies, & Reports


1970 Fish Study                         1970 Water Quality Analysis

1979 Fish Study  Part 1    Part 2    Part 3    Part 4    Part 5
1995 1995 Fish Survey
1996 1996 Water Quality Study        1996 Water Quality Study Summary
May 2005 Progressive AE Water Quality Update
 August 2008

2008 Fish Study by Fresh Water Physicians

> Full Report     > Photos of collecting samples

> Presentation to Fall General Meeting (6MB)

> Synopsis of Presentation and Dialog at Fall 2008 General Meeting

Fall 2017/Spring 2018 Summary: (report will be published when electronic version is available)

         Data available dating back to 1979 from prior Dr. David Jude studies.

         Data correlation to improved water conditions, including clarity, since installation of the Runyan Lake sewer system in the late 1980s.

         Dissolved oxygen still low at depth, but enough to prevent phosphorus spikes resulting from decaying plant material on the lake bottom.  This helps minimize aquatic weed growth.

         Water quality generally healthy, but evidence of increased sodium (salt) content from winter road salt runoff.

         Potential reduction of Yellow Perch, Lake Herring, other species, as a result of prior stocking of Walleye.

         Fish diversity has been slowly recovering during the last 10 years, lack of mature Yellow Perch population still of concern.

         Other species appear to be in much smaller quantities versus historical data, or no longer existent (Pike, Garpike, Lake Herring, Rock Bass). * note Pike and Garpike observed during fishing contest and 2018 breeding seasons but size and numbers suggest a decline in population)

        General lake health is good. Recommendation is to continue to allow for natural recovery.  No fish stocking.  Stocking will adversely affect the competitor species to whatever is stocked.

         Residents strongly encouraged to eliminate fertilizer runoff (dont fertilize grass on the waterfront side of your property), and no burning of grass and leaves to prevent fertilizing the lake (note effective 2018 it is now illegal per local ordinance to burn grass and leaves in our immediate area).

         Strongly encouraged to aggressively manage existing invasive species (Eurasian Milfoil, Starry Stonewort), and prevent other invasive species (goby, Quagga mussels) from neighboring lakes.


Please contact us at if additional information is desired.



Runyan Lake Inc.

PO Box 105

 Fenton, MI  48430-0105, USA

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