Lithgow's Water Supply Dam
Lithgow Dam #2 was built by the Public Works Department in 1907 as a water supply dam to service Lithgow. In 1914 the dam was raised by 3 feet (0.91 m) to increase storage capacity. It is on Farmers Creek located about 5.5 km north-east of Lithgow and about 0.5 km upstream of Lithgow Dam #1. It is a concrete arch dam with a free overfall spillway and a straight gravity section on the right abutment. The dam is a maximum 26.5 m high and the crest length is 71 m. The angle of the arch is 92°.
Lithgow Dam #2 is located within the Hawkesbury sandstone formation that is predominant in the Blue Mountains.
| Dam |
Date |
Capacity |
| Lithgow Dam #2 |
30 August 2010 |
100%
5 mm overflowing |
| Oberon Dam |
30 August 2010 |
26.61 % |
|
| |
Dam Facts
| Name of Dam |
Farmers Creek No. 2 |
| Owner |
Lithgow City Council |
| Designed by |
Public Works Department |
| Constructed by |
Public Works Department |
| Year of Completion |
1907 Original
1914 Raising |
| River |
Farmers Creek |
| Nearest Town |
Lithgow |
| Purpose |
Water Supply |
| Type |
Concrete Arch |
| Height |
24.6m Original
25.5m Raised |
| Length |
71m |
| Gross Capacity of Reservoir |
350 ML Original
440 ML Raised |
| Catchment Area |
12 km2 |
| Surface Area at FSL |
50 ha |
| Probable Maximum infow Flood |
750m3/s |
| Type of Spillway |
Free overfall |
| Spillway capacity |
36m3/s |
| Freeboard above FSL |
0.84m |
|
|
|
