Medford, OR — The Oregon Health Authority (OHA) has issued a preemptive recreational use advisory for Emigrant Lake due to the presence of a harmful algae bloom (HAB) caused by cyanobacteria. The advisory, which is aimed at protecting public health, comes as the cyanobacteria in the lake produces toxins that can lead to severe illness when ingested or inhaled.
While the OHA assures that the toxins cannot be absorbed through the skin, they advise against swimming, water skiing, and power boating in affected areas of the lake. The risks arise from the potential for individuals to ingest or inhale water spray that may contain cyanotoxins, which can cause symptoms ranging from mild to severe, similar to food poisoning. Individuals experiencing numbness, tingling, dizziness, or shortness of breath are urged to seek medical attention immediately.
The advisory also highlights the increased risk to certain vulnerable groups. Children and pets, particularly dogs, are especially susceptible to the toxic effects of cyanobacteria. Dogs, in particular, face a significant risk of rapid death if they are exposed to the toxins, with symptoms often appearing within minutes to hours of contact. Additionally, pets are at risk of water intoxication, which can be fatal even if the recreational advisory is in place.
Despite the concerns surrounding the algae bloom, the OHA states that some activities remain safe at Emigrant Lake. Fishing, camping, canoeing, and kayaking are still allowed, though caution is advised when it comes to fish caught in areas affected by the bloom. The OHA recommends that people refrain from eating fish caught in these regions, as the potential health risks are still unknown. For those who choose to consume the fish, the OHA advises removing the fat, skin, and organs before cooking or freezing.
Regarding drinking water from the lake, the OHA notes that toxins from cyanobacteria cannot be removed by boiling or filtering. Campground management and local health departments should be consulted to determine whether water from the lake is safe for consumption.
The harmful algae bloom at Emigrant Lake serves as a reminder of the potential dangers posed by cyanobacteria in Oregon’s waterways. The OHA continues to monitor the situation and advises the public to stay informed about any updates to the advisory. Visitors to the lake are encouraged to follow the recommended precautions to protect themselves, their families, and their pets from the harmful effects of cyanotoxins.