Walking on Warragamba Dam, Sydney's Largest Water Supply Dam, NSW Australia 2021 скачать в хорошем качестве

Walking on Warragamba Dam, Sydney's Largest Water Supply Dam, NSW Australia 2021

#sydneywalking #walkingtour #sydney #australia #walking #driving #sydneydriving #sydneytravel Warragamba Dam is a heritage-listed dam in the outer South Western Sydney suburb of Warragamba, Wollondilly Shire in New South Wales, Australia. It is a concrete gravity dam, which creates Lake Burragorang, the primary reservoir for water supply for the city of Sydney. The dam wall is located approximately 65 kilometres (40 mi) to the southwest of Sydney central business district, near the town of Wallacia. The dam was devised as part of a collective engineering response to Sydney's critical water shortage during World War II and was originally known as the Warragamba Emergency Scheme. Constructed between 1948 and 1960, the dam created capacity for a reservoir of 2,031 gigalitres (4.47×1011 imp gal; 5.37×1011 US gal) and is fed by a catchment area of 9,051 square kilometres (3,495 sq mi). The surface area of the lake covers 75 square kilometres (29 sq mi) of the now-flooded Burragorang Valley. It was designed and built by the Metropolitan Water Sewerage and Drainage Board. A small hydroelectric power station is incorporated into the design of the dam but is rarely operational. The property is owned by WaterNSW, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 18 November 1999. Drought has severely depleted the level of the dam at times: on 8 February 2007 it recorded an all-time low of 32.5% of capacity. On 2 March 2012, it overflowed for the first time in fourteen years. It overflowed again in 2016 and in March 2021. The Warragamba River flows through a gorge that varies in width from 300 to 600 metres (980 to 1,970 ft), and is 100 metres (330 ft) in depth. This gorge opens at its upper end into a large valley, the Burragorang Valley. This river configuration allows for a relatively short but high dam wall, in the gorge, to impound a vast quantity of water. Dam construction began in 1948 and was completed in 1960. The resulting dam of the Warragamba River formed Lake Burragorang, which is one of the largest reservoirs for urban water supply in the world. The dam wall comprises 1,612,000 cubic yards (1,232,000 m3) of concrete. It was laid as interlocking blocks roughly 17 metres (56 ft) on each side, which were later grouted together to form a continuous, monolithic wall. It is so large that engineers had to use two techniques to prevent the temperature from becoming too hot as the concrete set. One was to add ice to the wet concrete, the first application of this technique in Australia. The other was to embed cooling pipes into the concrete and circulate chilled water through the pipes. As a result, the dam wall was cooled in a few months instead of the estimated 100 years it would have taken to cool naturally. The dam impounds the Coxs, Kowmung, Nattai, Wingecarribee, Wollondilly, and Warragamba rivers, within the Hawkesbury-Nepean catchment. Source: Wikipedia More exciting videos:    / wanderingsydney   If you have suggestion of places you would like me to cover, please leave comments, and I hope you would SUBSCRIBE for more interesting videos every week. Don't forget to click notification BELL so you are up to date with new videos every few days. If you enjoy the contents in this channel, please LIKE, COMMENT & SHARE the link to your friends, family, facebook groups, and social medias. Instagram :   / wandering.sydney   Thanks for your support, god bless and have a nice day!