PPrince George, B.C.- A water quality advisory is in effect for the region southwest  of Vanderhoof.

The Ministry of Environment in conjunction with the Northern Health Authority is advising the public that there is a suspected blue-green algae (cyanobacteria) bloom at the east end of Tachick Lake and downstream on the Stoney Creek drainage, south-west of Vanderhoof which may pose a health risk for livestock, humans and wildlife.

This algae bloom, appears to be thoroughly mixed throughout the water column with associated minor fish kills to  suckers, but there has been no  indication that other aquatic life has been impacted.  Governmnet agencies are investigating the exact cause of the fish kill and will monitor progression of the bloom.

Blue-green algae blooms are relatively common throughout the Omineca-Peace region, with the current calm weather conditions ideal for blue-green algae growth. This condition is generally called a “bloom” and is typically seen on the water surface as “pea soup”, or a thick, oily, often turquoise/whitish slick. 

Although blooms do occur naturally, water bodies which have been enriched with phosphorus from, livestock waste, human sewage, fertilizers and/or detergents are particularly susceptible.

These blooms are unsightly, strong smelling and, if ingested, may be toxic to livestock, humans or wildlife. Because of the objectionable appearance and odour of these blooms, older children and adults are not likely to intentionally drink water containing blooms. Younger children who may be less careful should not be allowed to swim or wade in lakes with visible floating blooms. Blooms are often most concentrated, and dangerous, along shores that are exposed to onshore wind.

If water containing toxic cyanobacteria is ingested, symptoms such as fever, dizziness, headaches, stomach cramps, vomiting or sore throat may appear and persist for several days. Exposure to the toxins by swimmers has resulted in symptoms that include skin rash and irritation around the eyes.