July 2017 Water Quality Update: Gull Lake

By Mike Gallagher, Water Quality Chair Clarity      15 feet Surface Temp   77.36 Temp at 100 feet  48.56 Thermocline    30-35 feet Dissolved Oxygen at Surface    8.49 mg/l Dissolved Oxygen at Bottom    4.36 mg/l Max Dissolved Oxygen is 10.88 mg/l at 40 feet The clarity for this time of the summer is normal for Gull Lake.  The lake always gets less clear at the end of July.  We could see down to 26' two weeks ago but only 15' today. The thermocline is the depth where the temp of the…continue reading →
Swimmer’s Itch and How to Avoid It

Swimmer’s Itch and How to Avoid It

Fortunately, there seem to be few reported cases of swimmer's itch in Gull Lake these days, but I remember well when our sons were little how they would occasionally get it when swimming at the pagoda at the Biological Station. Swimmers itch is a problem in many Michigan lakes in the summer and it is definitely painful (but not dangerous). As the picture to the right shows, swimmer's itch appears as a series of red welts that itch like mosquito bites. Often the welts appear in a line near the waistband or straps…continue reading →
Gull Lake Smelt Die-Off

Gull Lake Smelt Die-Off

Over the past weekend (June 11th and 12th), you may have noticed an extraordinarily large number of dead smelt in Gull Lake.  Based upon conversations with local anglers and with the DNR, we understand that the most likely cause of the smelt die-off was thermal stress as Saturday was one of the hottest days of the year.  The appearance of the dead fish supports this conclusion due to the absence of hemorrhages or other signs of disease.  Most of the smelt were similar in size and presumably were schooling together in the same type of…continue reading →
Gull Lake Ice Cover History

Gull Lake Ice Cover History

Many of us enjoyed the mild winter. When the ice goes off Gull Lake early, like it did this year, we might wonder how the ice cover duration compared to previous years. Did you know that Gull Lake residents have been keeping track of freezing and thawing dates for almost 100 years! (more…)