The goal of the lake aeration program is to ensure the safe winter operation of aeration systems and to ensure the appropriate use of aeration technology. In most cases, the use of aerators is to maintain existing populations of fishes.
It is important to realize that aerators are not the best option in all lakes. For more information on the Lake Aeration Program, to view a brochure on how the use of aeration may prevent winterkill of fish, or to obtain a permit for an aerator visit the lake aeration program web page.
In addition to its wintertime measurements of oxygen levels, the Windom area fisheries staff also rely on the public to report any winterkill observed during the spring to aide in monitoring winterkill status. If you notice any evidence of a possible winterkill during spring please contact us.
Current measured oxygen levels
Windom area fisheries staff monitor dissolved oxygen levels during the winter in many area lakes, particularly lakes with aerators. Monitoring dissolved oxygen is important to determine potential winterkill situations so that appropriate fish population assessments and stocking plans can be developed in a timely manner during the spring.
Click a county below to display lakes where oxygen levels are being measured
- Cottonwood County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Bean 2.2 Bingham 13.2 Cottonwood 12.7 Clear - Clear (near Dundee) 4.3 Mountain 9.0 Double (North, South) 12.4, 5.5 Eagle - Summit - Talcot 7.9 Timber 6.9 - Jackson County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Boot 13.5 Clear 11.8 Flahtery (Skunk) 5.8 Independence 12.6 Little Spirit 9.0 Loon 6.1 Pearl 9.0 Round 14.7 South Heron 2.4 - Lincoln County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Benton 6.8 Dead Coon 8.4 West Dead Coon 13.6 Stay 2.3 Shaokotan 5.3 - Lyon County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Clear 0.75 East Twin - Goose 9.9 Island Not Accessible Rock 4.8 West Twin 2.8 Wood 10.9 Yankton 4.0 - Martin County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Big Twin 12.6 Budd 11.2 Buffalo 7.2 Cedar (North, South) 7.5, 7.0 Clear (Ceylon) 10.3 East Chain - Fish 9.5 Clam 8.9 George 6.1 Imogene 11.4 Iowa 7.8 Okamanpeedan 10.8 Sisseton 8.7 Temperance 9.2 Wilmert 9.8 - Murray County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Bloody 2.7 Buffalo 8.2 Corabelle 2.2 Currant 4.5 Fulda (North, South) 0.35, 0.70 Fox 1.0 Lime 0.62 Louisa 1.2 Sarah 15.3 Shetek (North, South) 6.7, 6.2 Summit 9.8 Wilson (North, South) 4.8, 2.5 - Nobles County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Bella - East Graham 11.4 West Graham 10.0 Indian Not Accessible Kinbrae 2.5 Ocheda 2.7 Okabena 12.3 - Rock County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Split Rock - - Watonwan County
Measurements (expressed in milligrams per liter [mg/L]) less than 2 are displayed in red and indicate low dissolved oxygen levels are stressing fish and winterkill may occur if dissolved oxygen levels do not increase or fish fail to find refuge in more oxygenated areas of the lake. Lake Jan. 10-18 Fedji 7.5 Kansas 10.9 St. James 9.1
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