The Haast River is a significant river located in the West Coast region of New Zealand's South Island. It flows approximately 50 kilometers from the Southern Alps to the Tasman Sea, passing through the stunning Haast Pass. The river is known for its clear blue waters and diverse ecosystems, making it a vital habitat for various fish species, including the native whitebait. The river is surrounded by lush rainforests and mountainous terrain, attracting outdoor enthusiasts for activities like fishing, kayaking, and hiking. The Haast region is also part of the Te Wahipounamu World Heritage Site, recognized for its natural beauty and ecological importance.