Mangrove Creek Dam is situated around 30 minutes drive from the Gosford exit on the F3 Freeway. The drive is certainly worth the experience. Mangrove Creek Dam is an ideal location for a quiet secluded family picnic featuring excellent BBQ and picnic facilities.
The rock filled dam is 80m high with a concrete face and provides storage for regional urban centres of Gosford and Wyong (over 285,000 people). The embankment is made from low strength sandstones and siltstones as these were available on site during the construction.
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To log this earthcache you must email cachingwithall7@gmail.com the correct answers to the following Question for Mangrove Creek Dam
1. In what year was the dam built ?
2. How many mega-litres of water can the Dam hold?
3. Why was it built?
4. What was the type of ‘earth’ drilling technology was used for the first time in Australia, to drill a pipe of this size and length?
5. What were the 3, locally quarried, ‘earth’ materials used to build the dam?
6. How much of the 4th ‘’Processed Earth’ material used?
7. Geologically, why was this area suitable for building a dam?
8. How many Venomous Australian snakes are shown on the display board ?