Definitions

Open/Closed

OPEN = Lake/area OPEN to all recreational users.

CLOSED = Lake/area CLOSED to primary contact recreational users due to microbiological contamination.

Primary contact recreation

This involves whole-body contact in which the entire body or the face and trunk are frequently immersed or the face is frequently wet by spray, and where it is likely that some water will be swallowed, inhaled, or come into contact with ears, nasal passages, mucous membranes or cuts in the skin (e.g. swimming, diving, waterskiing, windsurfing, white-water canoeing). While the water, or part thereof, is Closed to Primary Contact, Secondary Contact Recreation activities (e.g. boating, fishing, canoeing, and rowing) are permitted.

Secondary contact recreation

This may involve incidental contact in which only the limbs are regularly wet and in which greater contact is unusual (e.g. boating, fishing, canoeing, and rowing). There may be occasional and inadvertent immersion through accidents (e.g. slipping into the water).

Extreme

  • Waters, or part thereof, are CLOSED to primary contact recreation (including swimming, diving, water skiing and windsurfing);
  • There is an increased risk of adverse health events from water exposure for secondary contact recreation;
  • Symptoms of exposure may include skin/mucosa irritation, flu-like symptoms, and gastrointestinal illness;
  • People should not engage in secondary contact recreation unless:
    • they are experienced; o they are informed of the algal risks and what to do if contact occurs;
    • they do not engage in primary-contact during the recreation; and
    • showering facilities, with suitable water, are available for washing after the recreation;
  • Event organisers should ensure that participants are aware of the blue-green algae alert level, associated exposure risks and provide adequate showering facilities for after events; and
  • Water users should look for warnings signs indicating the current alert level at major water entry points.

High

  • Lake/area CLOSED to Primary contact, remains OPEN to Secondary contact
  • There is an increased risk of adverse health events from water exposure;
  • Symptoms of exposure may include skin/mucosa irritation, flu-like symptoms, and gastrointestinal illness;
  • The affected water is closed to primary contact recreation (including swimming, diving, water skiing and windsurfing)
  • Persons engaged in secondary contact recreation should be careful to limit any water exposure;
  • Water users should shower after water contact;
  • Event organisers should ensure that participants are aware of the blue-green algae alert level, associated exposure risks and provide adequate showering facilities for after events; and
  • Water users should look for algae warnings signs indicating the current alert level at major water entry points.

Medium

  • Lake/area OPEN to all recreational users
  • Some susceptible individuals may experience skin irritations, hay fever-like symptoms or flu-like symptoms after contact with affected water;
  • Water users should shower after water contact and avoid submersion; and
  • Water users should look for algae warnings signs indicating the current alert level at major water entry points.

Low

  • No restrictions in place.