Your PUD

Lake Chelan Lake Levels


Under the terms of its federal license, Chelan County PUD shall make a reasonable effort to comply with the lake level management practices defined in the Lake Level Plan in Settlement Agreement License Article 405.

Actual lake elevations may vary significantly from expected averages during drawdown and refill periods. Many factors affect lake level including precipitation, temperature, snowpack conditions, and the amount and timing of spring runoff, as well as compliance with the hydro project’s federal operating license and environmental objectives. In addition, there is the goal to meet target lake elevations May through October.

Future Operation
The elevation of Lake Chelan is expected to remain between 1,099 and 1,100 feet through Labor Day Weekend.  After Labor Day Weekend, it is planned that the lake will be gradually drafted to near elevation 1,097.2 feet by Oct.1.  Most generation is being scheduled during higher demand hours. 
Current Lake Level (Lakeside Gauge)

Saturday, August 30, 2008 04:19 AM: 1099.35 feet above sea level

Last 10 Days

For the 10 days ending 8/29/2008, the daily lake elevation (in feet) has been:

 Date   Level   Change 
  Aug 20     1099.56     0.05  
  Aug 21     1099.62     0.06  
  Aug 22     1099.59     -0.03  
  Aug 23     1099.51     -0.08  
  Aug 24     1099.5     -0.01  
  Aug 25     1099.5     0.00  
  Aug 26     1099.49     -0.01  
  Aug 27     1099.41     -0.08  
  Aug 28     1099.38     -0.03  
Lake Chelan Reservoir Graph

To see data points, first click on the chart and then hover over a spot on the line.
You can also view larger versions of this chart or a year-to-date chart.

Actual lake elevations may vary significantly from expected averages during drawdown and refill periods. Many factors impact lake elevations including precipitation, temperature, snowpack conditions, volume and timing of spring runoff, as well as efforts to comply with operating and environmental objectives in the Hydro Project’s License and the goal of meeting target lake elevations during May through September.
Other Information

Web site for Stehekin River flow