Don't need to cross anyones land.
Park the car and take six paces and you feet should be just about wet.
Not a river, but a thermal pond, fed by a spring which gives them the correct temperature, and which then flows into Lake Taupo.
They are not a threat to the environment as the water they live in is too hot for trout or natives, so they just fill an empty niche.
Only thing to beware of are some ignorant ummm, (careful Al, your a Mod) people, that say that they put them there and that they eat them.
Yeah? Pull the other one.
To find it, head for Little Waihi from Tokaanu, just before you take a turn to go up a steep incline, away from the Lake there was a stretch of water on your left.
THAT'S the pond.
By the way, you don't have a dog's chance of catching them all.
One, there are to many of them.
Two, they are spread all around the lake area, some of which is inaccesable.
Three, you wont be smart enough to catch them, well, not all of them, they can JUMP
Four, you'll need the right nets or gear to get them.
The best are the electric stunners, and not many ppl have them, do they??
There you are, the secrets out, I have known about them now for about 20 years, and when I first found them, the feeder spring was so hot it was used by the local maori to scald pigs.
Now it will hardly warm a can of spaggeti.
Alan 104
ps, It is a good place to visit as the hobbiests will find out.
Check out the stream that you crossed over just before the pond too. Good plants in there
Al