Adam Daniel fishes in the upper reaches of the Whanganui River in New Zealand on June 16, 2022. Daniel monitors the Whanganui and dozens of other rivers for Fish & Game New Zealand. He has found more sediment even in the river's upper reaches than in nearby waterways. Forestry, four-wheel-drive trails and other human impacts are factors, but near the Whanganui's source, Daniel points out where a power company is sucking out water as part of the Tongariro Power Scheme. (AP Photo/Brett Phibbs)