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 September.
Future Operation
The elevation of Lake Chelan is expected to remain between 1099 and 1100 feet through Labor Day Weekend. After Labor Day Weekend, it is planned that the lake will be gradually drafted to near elevation 1097.2 feet by October 1. Most generation is being scheduled during higher demand hours. Current Lake Level (Lakeside Gauge)
Thursday, August 28, 2008 12:33 AM: 1099.40 feet above sea level
Last 10 Days
For the 10 days ending 8/27/2008, the daily lake elevation (in feet) has been:
| Date | Level | Change |
|---|---|---|
| Aug 18 | 1099.56 | 0.08 |
| Aug 19 | 1099.51 | -0.05 |
| 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 |
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
© 2006-2008 Chelan County Public Utility District No. 1 - All Rights Reserved

