Yan Yean Reservoir
Area of catchment
2,250 hectares (off stream storage)
Type of dam
Earthfill embankment
Maximum height of main dam from river to crest
10 metres
Length measured along top of dam
963 metres
Surface area (top water level)
560 hectares
Total available capacity
30,266 megalitres
Volume as at 4/2/2012
26,746 megalitres (88.4% full)
Where the water goes
Northern and central suburbs
Date of completion
1857
Annual Rainfall
| Yan Yean Key Rainfall Facts (in mm) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Tot | |
| Wettest | 141.5 (1872) |
220.9 (1911) |
193.3 (1970) |
215.2 (1901) |
147.8 (1942) |
166.8 (1977) |
146.8 (1891) |
151.0 (1939) |
232.0 (1916) |
195.5 (1934) |
207.2 (1988) |
211.8 (1930) |
1048.6 (1872) |
| Driest | 0.0 (1878) |
0.0 (1991) |
2.5 (1948) |
0.0 (1923) |
2.3 (1934) |
11.7 (1972) |
15.4 (1979) |
10.9 (1928) |
10.0 (1938) |
7.5 (1914) |
5.6 (1967) |
2.3 (1860) |
370.6 (1945) |
| Average | 44.9 | 45.2 | 50 | 56.4 | 56 | 52.5 | 50.7 | 58.3 | 61.9 | 67.9 | 61.8 | 56.3 | 661.8 |
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