Bob LeFridge 
Otago folks -- the ORC has a new environmental data portal with (almost) live data on a whole range of things.
It's a work in progress but it's cool. Oxygen and nitrate levels, flows, lake, sea & groundwater levels & temperatures and even E-Coli levels. North Dunedin & Milton... E-Coli is high in your area right now.
Click on "Map" and have a play.
https://envdata.orc.govt.nz/AQWebPortal/Data/Map/Parameter/Water%20Temp/Interval/Latest