Lake log

What swimmers see from inside the lake

We swim in Roys Bay every week, so we see the top metre of the lake in a way nobody on the shore can. After a swim, club members log the water temperature, how far they could see, the weed and anything unusual. We share the log with WAI Wānaka and Touchstone, and we are working with them on how swimmers can best help look after the lake.

The first entries are coming soon

Club members log what they see after each swim. The first entries will appear here as the season goes.

What we record

Water temperature in the top metre, from swimmers' watches. This is the water we actually swim in.
Clarity: roughly how far down you can see.
Weed: none, some or lots, and where.
Anything unusual: algae, scum, rubbish, a change after rain.

Live data from the ORC buoy

Otago Regional Council runs a monitoring buoy at the mouth of Roys Bay, measuring temperature, oxygen, algae and clarity from the surface to 120 m several times a day. It sits out in deep water and measures at depth, so for the water we swim in, the swimmers' readings above are a better guide.

Open the buoy data ↗

Opens the Limnotrack portal. Accept the notice and Wanaka is shown first.

Seen something in the lake worth noting? Email hello@wanakalakeswimmers.co.nz.