Hume_Lake_Drawdown-2010.pdf

Nov 2010 – Overview of Hume Lake drained down to the top of the outlet works.

Nov 2010 – Remaining pool around outlet work in front of bay 6.

Nov 2010 – Drained Hume Lake looking upstream.

Nov 2010 – Drained Hume Lake looking toward the dam.

11-14-2010 ARRA – Hume Dam Valve Replacement – concrete pour – 1 cy concrete bucket lowered by truck crane down to control valves concrete support slab.

11-14-2010 ARRA – Hume Dam Valve Replacement – crane truck set-up with cable lowered over the dam down to existing 36” control ball valve.

11-14-2010 ARRA – Hume Dam Valve Replacement – 150 ton crane truck setting up installing counter weights 130 tons.

11-14-2010 ARRA – Hume Dam Valve Replacement – 150 ton crane truck backing into place on prepared pad covered with plastic sheeting.

11-14-2010 ARRA – Hume Dam Valve Replacement – 150 ton crane truck backing down prepared access road into lake bottom.

11-8-2010 ARRA – Hume Dam Valve Replacement – prepared pad for crane truck.

11-15-2010 – Hume Dam Valve Replacement – Crane truck set up for valve replacement;

upstream dam face and lakebed in the background.