Historical study of flooding and water management.
Goulburn is located near the confluence of the Wollondilly River and Mulwaree Ponds in the southern highlands of New South Wales. The two streams cause flooding of residential areas in North Goulburn and East Goulburn respectively.
The Wollondilly River rises in the Great Dividing Range east of Crookwell and drains the south-western section of the Hawkesbury River Basin. The catchment is situated in hilly country with steep slopes on both sides of the river and has an area of 720 km2 above Goulburn. The floodplain is typically well defined and relatively narrow through Goulburn.
Mulwaree Ponds (also known as the Mulwaree River or Mulwaree Creek) is one of the largest and southernmost tributaries of the Wollondilly. It rises in the Great Dividing Range just south of Tarago and flows northward to Goulburn. The catchment covers an area of 750 km2 and is bounded to the west by steep slopes and to the east by undulating country.
There are two minor dams on the Wollondilly catchment upstream of Goulburn which are used for the Goulburn water supply. They are Sooley Dam on Sooley Creek, a minor tributary of the Wollondilly, and Pejar Dam on the Wollondilly 70 km upstream of Goulburn. They have capacities of 4520 megalitres and 9000 megalitres respectively and are normally kept as full as possible … The storages are considered to have no mitigating effect on Wollondilly floods at Goulburn due to their relatively small capacity and their distance upstream.
Wollondilly River levels were continuously recorded at Marsden Weir by the Commission between 1962 and 1977. Levels have also been observed and marked during major floods since 1870 at Marsden Bridge, 200m downstream of the weir. The highest floods recorded at the bridge have been in November 1870, 1900, 1952, October 1959, November 1961, and in August 1974, with the highest reading being 1961 when a peak gauge height of 3.24 metres was reached. There are no gauges on the Mulwaree Ponds.
Source: Goulburn Flood Study Report by the Water Resources Commission of New South Wales (1986).
Images:
1. View north, corner Auburn & Goldsmith Sts, Goulburn c.1950 (source unknown).
2. Eastgrove and Mulwaree Ponds 1959 (Goulburn Flood Study Report).
3. Bungonia Street Bridge 1974 (Goulburn Flood Study Report).
4. Eastgrove 1977 (John A Yeadon).
Has your family been affected by any of Goulburn’s past floods? Please share your memories.




Located on a hill at Bungonia is St Michael’s Catholic church. Building began in 1839, but as to the present church being the same building, history is unsure. Bishop Polding visited Bungonia in 1840, and placed much emphasis on the building of a church in his sermon. The church was finally opened by Bishop Polding in 1847.