Bingo thats the place. I last went there to get plants about 5 years ago. No body stoped me . there are plenty of different plants in those ponds. Also not too far away is lake pupuke it has Potamogeton crispus. I'm not sure if it is native or not, any idea guys? I think that stuff might grow a bit to big for the tank you might have in mind. But there has to be other natives down there.
I hope this help, get ready to get wet at chealse they will be a bit hard to find if you intend on staying dry.