Table 1 – Range of watertables¹

1 Bogong Power Development Tunnel and Civil Works Contract, Volume 1, Formal Instrument of Agreement, Schedule 10B – Technical Particulars, AGL September 2006

Item Water levels (m AHD)
Headpond
Normal operating level (turbine rated output) 1067.2
Spillway crest level 1068
Maximum headpond level 1069
Tailwater
Minimum operating level (Lake Guy) 638.4
Minimum level at draft tube (controlled by a weir in the Bogong Power Station) 641.5
Mean operating level 645.5
Maximum normal operating level 649.68
Maximum flood level (Lake Guy) 653