Regional | Local | Desirability | Physicality | Code & Sensitivity

Temperature

Lake Chelan’s uppermost surface waters (thermocline layer depth at 130’) have a dramatic temperature fluctuation as seasons come and go. The warmest water naturally occurs in the summer months (approximately 60°F75°F). Throughout the Fall season, the waters dramatically drop in temperature each month, approximately 10 degrees per month (65°F-45°F). Winter months are dangerous for any swimming, falling from approximately 39°F down to a low of 33°F. In springtime, the water remains brisk throughout; only in May does the temperature creep up to around 48°F.

Potentiality

The south shore location of the Three Fingers, in conjunction with the man-made peninsulas extending 300 feet into the lake from the shoreline, provides a unique opportunity to harness the thermal energy of the lake. Utilizing the lake as a heat source/sink for the buildings on site could provide:

� A unique source for greater energy efficiency in the project cooling and heating systems.

� Its own exhibitory presence in the programming to showcase some of the untapped powers the lake can provide.

� Help fulfill the project goal of having the architecture embody the local systems.

Lake Water Attributes Late Summer

Early Spring