Gazing across the serene expanse of Mangatangi Reservoir, can you sense the stories it whispers? This remarkable reservoir, nestled in the Hunua Ranges south of Auckland, holds more than just water. It holds a legacy of engineering ingenuity and a vital role in Auckland’s water supply. Mangatangi Reservoir was created by the Mangatangi Dam, a rolled earth dam completed in 1977. This dam stands as a testament to New Zealand’s advancements in rolled earth dam design. The Mangatangi Dam was the last in a series built in the Hunua Ranges between 1950 and 1977. It involved a remarkable feat of engineering, requiring over 2,140,000 cubic meters of fill material. Imagine the scale! It’s almost as much material as the Pyramids of Cheops. The dam’s construction also featured a record-breaking bellmouth spillway, the largest of its kind in New Zealand at the time. Mangatangi Reservoir isn’t just about engineering marvels. It’s a haven for rainbow trout, regularly supplemented by hatchery releases. If you’re a fishing enthusiast, you can try your luck at the face of the dam. Remember, a Water Access Permit is essential, available at no cost from fishing kiosks at the reservoirs. Fly fishing with a nymph is often the most effective technique here. Long leaders are recommended due to the deep water. For those who prefer other methods, small spinners and soft baits can be productive, especially during summer. Mangatangi Reservoir is a place where human ingenuity meets natural beauty. It serves as a vital resource for Auckland, while also providing a tranquil escape for those seeking a moment of peace amidst stunning scenery.
Mangatangi Reservoir
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