Blooms have been found in the Waipoua River in Wairarapa, and Te Awa Kairangi Hutt River between Birchville and Manor Park, and the Pakuratahi River at Kaitoke campground, both in the Hutt … var a=new Image(); a.src=img; return a; // -->. I first visited Hutt River in 1977 as student on a school camp. Visit the 9AM - 4PM,