Henley Lake Closed to Recreational Water Users
Henley Lake currently has high levels of toxic algae and is
closed for all water activities.
Tests are carried out by Masterton District Council to monitor
the cyanobacteria (toxic algae) levels at
Henley Lake between Labour Weekend and Easter. Recent tests have
shown the presence of
cyanobacteria and it is recommended that visitors avoid contact
with the water, particularly young children,
pregnant women and the elderly.
produce toxins that are harmful to humans and animals if
swallowed or through contact with skin,
such as may occur when swimming or rowing. Exposure to cyanobacteria may
cause symptoms such as
skin rashes, nausea, stomach upset, and tingling or numbness around the
mouth or tips of fingers.
Pregnant women, children and the elderly are more likely to be affected.
If you experience health symptoms
after contact with the lake, consult a doctor who will let the Public
Health Unit know.
Dogs may also be at risk. Throughout New Zealand a number of
dogs are known to have died after eating
cyanobacteria at the edges of water bodies. Keep dogs out
of the water, and away from the edge.
you believe your dog has eaten contaminated material, contact
your vet immediately.
occur naturally, but levels can increase rapidly during summer
the water is cloudy, discoloured or has small globules suspended
in it, avoid all contact.
all cyanobacterial blooms are visible to the naked eye and
toxins can persist after the bloom has disappeared.
concentrations can change quickly with changing environmental
conditions (eg wind).
If a health warning is in place, avoid contact with the water.
further details and the most up to date algae status information
see the signs at the lake
District Council can be contacted on 06 370 6300 and information
brochures are available from the
council offices at 64 Chapel Street.
13 January 2016