View images from our work in many of New Zealand's rivers and lakes. Hutt River. Credit Dave Allen NIWA. NIWA Divers on Lake Brunner. Credit John Clayton NIWA. NIWA Divers on Lake Brunner. Credit John Clayton NIWA. Gel Trial Against Weeds. Credit Rohan Wells NIWA. Spraying Invasive Weeds in Hamilton. Credit Tracey Burton NIWA. Hand Weeding Wanaka. Credit John Clayton NIWA. Hand Weeding Wanaka. Credit John Clayton NIWA. Huka Falls. Credit Dave Allen NIWA. Huka Falls. Credit Dave Allen NIWA. Hutt River. Credit Dave Allen NIWA. Hutt River. Credit Dave Allen NIWA. Diver Observes Lake Swan Hornwort. Credit Rohan Wells NIWA. Mangaone River Kapiti. Credit Dave Allen NIWA. Lake Waikaremoana Tree. Credit Rohan Wells NIWA. Apanui Skipper Overlooking Waikato River. Credit Dave Allen NIWA. Pukeko. Credit Dave Allen NIWA. Pukeko. Credit Dave Allen NIWA. Sunrise Over Rakaia River. Credit Dave Allen NIWA. Rakaia River. Credit Dave Allen NIWA. Rakaia River. Credit Dave Allen NIWA. Rakaia River. Credit Dave Allen NIWA. Rakaia River Sunset. Credit Dave Allen NIWA. Riparian Strip. Credit Dave Allen NIWA. Riparian Strip. Credit Dave Allen NIWA. Riparian Strip. Credit Dave Allen NIWA. Riparian Strip. Credit Dave Allen NIWA. Central North Island River. Credit Dave Allen NIWA. River Footprint on Mangaone River. Credit Dave Allen NIWA. John Clayton on Lake Rotoaira. Credit Rohan Wells NIWA. Suction Dredge Underwater. Credit John Clayton NIWA. Tawhai Falls. Credit Dave Allen NIWA. Tawhai Falls. Credit Dave Allen NIWA. Boat on Waikato River. Credit Dave Allen NIWA. Waikato River. Credit Dave Allen NIWA. Waikato River. Credit Dave Allen NIWA. Waikato River. Credit Dave Allen NIWA.