Reported Blue-Green Algae Blooms
The following table outlines local blue-green algae information.
If you spot a suspected blue-green algae bloom, report it by calling 1-866-MOE-TIPS (663-8477).
| Location | Date of Sample | Date Blue-Green Algae Identified | Toxins Present (Yes/No) | Date Toxin Analysis Posted |
|---|---|---|---|---|
| Wabigoon Lake at Sandy Beach, west of Bonnie Bay | not available | |||
| Rubber Island to Firebag Island, Lake of the Woods | not available | |||
| Cedar Lake, unorganized 150 kms NE of Kenora | 01-Oct-24 | 08-Oct-24 | Yes. Anatoxin-A concentrations were reported below detection limits. Microcystin-LR concentration below the Ontario Drinking Water Quality Standard. Total microcystin concentration below the Health Canada guideline. | 18-Oct-24 |
| Rocky IsletBay/ Windy Point area, Rainy Lake | 01-Oct-24 | not available | not available | not available |
| Portage Bay on Lake of the Woods - Keewatin Boat Launch | 20-Sep-24 | 08-Oct-24 | Yes. Anatoxin-A concentrations were reported below detection limits. Microcystin-LR concentration below the Ontario Drinking Water Quality Standard. Other micrycystin variants detected but below Ontario Drinking Water Standard. Total microcystin concentration below the Health Canada guideline. | |
| Pelican Lake by Sioux Lookout - Cedar Point Drive Area | 19-Sep-24 | 02-Oct-24 | Yes. Anatoxin-A concentrations were reported below detection limits. Microcystin-LR concentration below the Ontario Drinking Water Quality Standard. Total microcystin concentration below the Health Canada guideline. | 18-Oct-24 |
| Treaty Island and Town Island area, Lake of the Woods | not available | |||
| Temple Bay on Eagle Lake | 14-Aug-24 | 27-Aug-24 | Yes. Anatoxin-A concentrations were reported below detection limits. Microcystin-LR concentration below the Ontario Drinking Water Quality Standard. Total microcystin concentration below the Health Canada guideline. | 18-Oct-24 |
| Crystal Lake | 14-Aug-24 | 20-Aug-24 | Yes. Anatoxin-A concentrations were reported below detection limits. Microcystin-LR concentration below the Ontario Drinking Water Quality Standard. Total microcystin concentration below the Health Canada guideline. | 18-Oct-24 |
| Edward Lake | 15-Oct-23 | 23-Oct-23 | Yes, total Microcystins concentration was below Ontario Drinking Water Standards | 23-Oct-23 |
| English River, Ear Falls | 02-Oct-23 | not available | not available | not available |
| Winnipeg River, Villeneuve Road | 02-Oct-23 | not available | not available | not available |
| Cameron Bay, Lake of the Woods | 03-Oct-23 | 11-Oct-23 | Yes, total Microcystins concentration were below Ontario drinking water standards | 11-Oct-23 |
| Cuttle Lake, Hwy 502 | 29-Aug-23 | not available | not available | not available |
| Hartman Lake | 15-Aug-23 | 23-Aug-23 | Yes, total Microcystins concentration were below Ontario drinking water standards | 23-Aug-23 |
| Laurenson Lake | 01-Aug-23 | 04-Aug-23 | not available | not available |
| Johnson Landing Road, Winnipeg River | 21-Jul-23 | 28-Jul-23 | Yes - Microcystins were present at concentrations below the Ontario Drinking Water Standard | 28-Jul-23 |
| Wabigoon Lake | 26-Jun-23 | 06-Jul-23 | Yes - Microcystins were present at concentrations below the Ontario Drinking Water Standard | 06-Jul-23 |
| Abram Lake | 26-Jun-23 | 06-Jul-23 | No | 06-Jul-23 |
| Second Sandy Beach on Pelican Lake | 26-Jun-23 | 06-Jul-23 | No | 06-Jul-23 |
| Lulu Lake (Kenora area) | 08-Jun-23 | 15-Jun-23 | No | 16-Jun-23 |
| Mink Bay (Kenora) | 05-Oct-22 | 14-Oct-22 | Yes - Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | 14-Oct-22 |
| Black Sturgeon Lake (Williams Road area) | 05-Oct-22 | 12-Oct-22 | Yes - Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | 12-Oct-22 |
| Lulu Lake (Kenora) | 30-Sep-22 | 11-Oct-22 | not available | not available |
| Longbow Lake - East Inlet (near Kenora) | 21-Sep-22 | 04-Oct-22 | not available | not available |
| Cedar Lake (near Kenora) | 21-Sep-22 | 23-Sep-22 | Yes - Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | 04-Oct-22 |
| Rainy Lake (Rice Bay) | 23-Aug-22 | 29-Aug-22 | Yes - Microcystins were present at concentrations above the Ontario Drinking Water and Recreational Water Standard | 29-Aug-22 |
| Wabigoon Lake (Larson Bay) | N/A - No samples will be taken due to confirmed presence of blue-green algae in Wabigoon Lake | N/A - Suspect bloom reported Aug 14, 2022 | N/A | N/A |
| Wabigoon Lake (Bonny Bay) | 05-Aug-22 | 12-Aug-22 | Yes - Microcystins were present at concentrations above the Ontario Drinking Water Standard. | 12-Aug-22 |
| Ghost Lake (Dryden area) | 03-Aug-22 | Not considered an algae bloom | No | 12-Aug-22 |
| Kirk Lake (Sioux Lookout) | 22-Jul-22 | Not considered an algae bloom | N/A | N/A |
| Minnitaki Lake (Sioux Lookout) | 15-Jul-22 | 22-Jul-22 | No | 22-Jul-22 |
| Wabigoon Lake (Dryden) | 18-Jul-22 | Not considered an algae bloom | N/A | N/A |
| Abram Lake (Sioux Lookout) | 18-Jul-22 | Not considered an algae bloom | N/A | N/A |
| Pelican Lake | 15-Jul-22 | Not considered an Algae Bloom | N/A | N/A |
| Muriel Lake | 04-Oct-21 | 21-Oct-21 | Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | 21-Oct-21 |
| Winnipeg River (Tressor Point and Andy's Camp Road) | N/A - No samples will be taken due to confirmed presence of blue-green algae in Lake of the Woods | N/A -Suspect blooms reported Sept 30 and Oct 3/21 | N/A | N/A |
| Lake of the Woods - Multiple locations both along the shore and in open water | N/A - No samples will be taken due to confirmed presence of blue-green algae in other area of the lake | N/A - Suspect blooms reported on Sept. 30/21 | N/A | N/A |
| Lost Lake (West of the Boat Bay boat launch on south shore) | N/A – No samples were collected at this location | N/A - Suspect Bloom reported to Spills Action Centre on Sep 26/21 and another reported Oct 1/21 | N/A | N/A |
| Lulu Lake | Sep 28/21 | Oct 22/21 | The concentration of microcystin and anatoxin A were both below the method detection limit at the time of sampling. | Oct 22/21 |
| Abram Lake (North of Frog Rapids) | Sep 21/21 | Oct 21/21 | The concentration of microcystin and anatoxin A were both below the method detection limit at the time of sampling. | Oct 21/21 |
| Wabigoon Lake (Bonny Bay Rd area) | N/A – No samples will be taken due to confirmed presence of blue-green-algae in other area of the north shore of the lake. | N/A - Suspect Bloom reported to Spills Action Centre on Sept 26, 2021 | N/A | N/A |
| Lake of the Woods (Anicinabe Park) | Aug 31/21 | Sep 23/21 | Microcystins detected above the Ontario Drinking Water Standard limit. Anatoxin A was not detected in the sample. | Sep 23/21 |
| Spruce Lake | Sep 9/21 | Oct 12/21 | Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | Sep 29/21 |
| Wabigoon Lake (Larson Bay area) | Aug 30/21 | Sep 7/21 | Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | Sep 27/21 |
| Wabigoon Lake (Maple Rd area) | Aug 20/21 | Sep 10/21 | Microcystins were present at concentrations below the Ontario Drinking Water Standard. Anatoxin-A was not detected in the sample. | Oct 4/21 |
| Thunder Lake (Saindon Rd / North Shore Rd) | N/A - Suspect bloom only, received June 28, 2021. Testing was not completed. | N/A | N/A | N/A |
| Caliper Lake Provincial Park | July 9/21 | July 20/21 | Concentration of Dolichospermum and Microcystis were below the Ontario Drinking Water Standard. The concencration of Anatoxin-A detected could have potential risk to human health at the time the sample was collected (as per Minnesota Department of Health). | July 20/21 |
| Storm Bay, Lake of the Woods | July 5/21 | July 12/21 | Concentration of microcystins and Anatoxin-A were below the Ontario Drinking Water Standard | July 12/21 |
| Winnipeg River Tressor Point Rd | July 5/21 | July 13/21 - Not identified as a bloom | Low concentration of microcystins were below the Ontario Drinking Water Standard. | July 14/21 |
| Winnipeg River Villenueve Rd | Oct 7/20 | Oct 13/20 | Concentration of microcystins were at or below the Ontario Drinking Water guideline | Oct 19/20 |
| Sandy Lake - Loc 2 - SW | Sep 30/20 | Oct 5/20 | Concentration of microcystins were at or below the Ontario Drinking Water guideline | Oct 13/20 |
| Sandy Lake - Loc 1 - NE | Sep 29/20 | not available | not available | not available |
| Tunnel Island - Safety Bay | Sep 29/20 | Oct 5/20 | Concentration of microcystins were at or below the Ontario Drinking Water guideline | Oct 13/20 |
| Lake of Bays (Big Grassy River FN) | Sep 22/20 | Sep 30/20 | Concentration of microcystines were at or below the Ontario Drinking Water guideline | Oct 14/20 |
| Nickel Lake | Sep 19/20 | Oct 5/20 | Concentration of microcystins were at or below the Ontario Drinking Water guideline | Oct 5/20 |
| Lulu Lake | Sep 11/20 | Sep 18/20 | Concentration of microcystins were at or below the Ontario Drinking Water Guildeline | Sep 24/20 |
| Granite Lake | Sep 1/20 | Sep 14/20 | No Toxins Detected | Sep 15/20 |
| Jackfish Lake | Aug 31/20 | not available | not available | not available |
| Wabigoon Lake | Aug 21/20 | Aug 27/20 | Concentration of microcystins were at or below the Ontario Drinking Water Guideline | Sep 1/20 |
| Wabigoon Lake | Aug 19/20 | Aug 27/20 | Concentration of microcystins were at or below the Ontario Drinking Water Guideline | Aug 31/20 |
| Granite Lake | Jul 25/20 | Jul 29/20 | No Toxins Detected | Aug 17/20 |
| Pickle Lake | Jul 8/20 | Jul 13/20 | No Toxins Detected | Jul 28/20 |
| Thunder Lake | Jul 6/20 | Jul 10/20 | Concentration of microcystins were at or below the Ontario Drinking Water Guideline | Jul 28/20 |
| Laurenson Lake | Jul 6/20 | Jul 16/20 | No Toxins Detected | Jul 28/20 |