Pejar Dam
| Pejar Dam | |
|---|---|
Pejar Dam in November 2005
|
|
 Location of the Pejar Dam
in New South Wales |
|
| Country | Australia |
| Location | Southern Tablelands, New South Wales |
| Coordinates | 34°34′54″S 149°34′33″E / 34.58167°S 149.57583°ECoordinates: 34°34′54″S 149°34′33″E / 34.58167°S 149.57583°E |
| Purpose | Potable water supply |
| Status | Operational |
| Opening date | 1979 |
| Owner(s) | Goulburn Mulwaree Council |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Wollondilly River |
| Height | 26 m (85 ft) |
| Length | 367 m (1,204 ft) |
| Dam volume | 95×103 m3 (3.4×106 cu ft) |
| Spillway type | Uncontrolled |
| Spillway capacity | 2,470 m3/s (87,000 cu ft/s) |
| Reservoir | |
| Total capacity | 9,000 ML (320×106 cu ft) |
| Catchment area | 143 km2 (55 sq mi) |
| Surface area | 1.55 km2 (0.60 sq mi) |
The Pejar Dam is an earth and rock-filled embankment dam with an uncontrolled spillway across the Wollondilly River, located in the Southern Tablelands region of New South Wales, Australia. The principal purpose of the dam is to supply potable water for the city of Goulburn. The impounded 9,000-megalitre (320×106 cu ft) reservoir is also called Pejar Dam.
The dam was completed in 1979 by the New South Wales Department of Works for the Goulburn City Council to augment the water supply. The height of the dam wall is 26 metres (85 ft), and 367 metres (1,204 ft) in length. The earth and rock-filled embankment wall is 95×103 m3 (3.4×106 cu ft) by volume. The uncontrolled spillway discharges overflow at the rate of 2,470 cubic metres per second (87,000 cu ft/s). The reservoir has a maximum storage capacity of 9,000 megalitres (320×106 cu ft) over 1.55 square kilometres (0.60 sq mi) drawn from a catchment area of 143 square kilometres (55 sq mi).
It is one of three water storage facilities serving the city, and is used to augment the water supply when Sooley Dam is unable to maintain enough water in Rossi Weir, from which Goulburn's water filtration plant is supplied. Water is released from the dam down the Wollondilly River where due to issues of loss the water fails to arrive at Rossi weir, upstream from Goulburn. Water is actually pumped to the city's water treatment works from Rossi Weir which is pumped down from Sooley Dam then and distributed to Goulburn's reticulation system for consumption.
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Wikipedia