Final answer:
The Wailuku and Anahulu Rivers are both located in the state of Hawaii, with the former being the longest river in Hawaii and the latter situated on Oahu's north shore.
Step-by-step explanation:
The Wailuku River and Anahulu River are located in the state of Hawaii. Specifically, the Wailuku River is on the Island of Hawaii, also known as the Big Island, and is the longest river in the state. The Anahulu River is located on the north shore of Oahu. Neither of these rivers is related to the Huka Falls on the Waikato River in New Zealand, which is a separate geographic entity altogether and demonstrates flow rate concepts.