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WaterNSW also owns and operates the largest surface and groundwater monitoring network in the southern hemisphere. [ 2 ] WaterNSW was established on the 1 January 2015, under the Water NSW Act 2014 , merging the State Water Corporation (which managed the states rivers and dams other than Sydney) and Sydney Catchment Authority which managed ...
The dam wall height is 76 metres (249 ft) and is 1,116 metres (3,661 ft) long. The water depth is 57 metres (187 ft) and at 100% capacity the water level is 344 metres (1,129 ft) AHD. The surface area of the dam is 7,200 hectares (18,000 acres) and the catchment area of the dam is 13,900 square kilometres (5,400 sq mi).
As at 10 September 2009, the Woronora Dam, constructed between 1927 and 1941, was the fifth and last of the water supply dams constructed prior to the Second World War to provide a secure water supply to satisfy the demands of industrial, commercial and residential development of metropolitan Sydney up to c. 1960.
Following a media release on 18 August 2023, [7] it was announced that, as of 1 January 2024, the department would be split into two new entities: the Department of Climate Change, Energy, the Environment and Water, and the Department of Planning, Housing and Infrastructure.
Flood forecasting is an important component of flood warning, where the distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to tell decisions on warnings of floods.
[8]: 15–17 The Scheme was a significant feat of engineering at the time of construction. In June 1885 Sydney was in the grip of a severe drought and the Upper Nepean Scheme was incomplete. The Government accepted an offer from Hudson Brothers to bridge the gaps and deliver 14 megalitres; 3.6 million US gallons (3 × 10 ^ 6 imp gal) of water ...
Mean low water springs (MLWS) is the average of the water levels of each pair of successive low waters during that period of about 24 hours in each semi-lunation (approximately every 14 days), when the tidal range is greatest (spring range). [14] [15]
Water flows 16.6 km (10.3 mi) from Tantangara Reservoir to Lake Eucumbene via the 3.1–3.35 m (10.2–11.0 ft) diameter Murrumbidgee-Eucumbene tunnel falling 40 m (130 ft) in the process. Flow is controlled by a 1.83 m × 2.13 m (6 ft 0 in × 7 ft 0 in) regulating gate such that a maximum of 20 m 3 /s (710 cu ft/s) is allowed.