Your PUD

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 Operations
The level of Lake Chelan is expected to be at least a foot higher than usual through October and November.  This is due to reduced capacity that occurred during modernization work on the first of two generating units at the Chelan Falls Powerhouse.  Modernization work on the first unit has been completed.

Beginning in December 2009, the second of two generating units is expected to be removed from service for modernization, and generating capacity will again be reduced through March 2010, slowing the rate that Lake Chelan is lowered during the winter.

Water from the dam is now flowing through the Chelan River gorge to meet terms of the new operating license.  At least 80 cubic feet per second of water will flow through the gorge year round.  

Saturday, November 7, 2009 04:12 PM: 1096.83 feet above sea level

For the 10 days ending 11/6/2009, the daily lake elevation (in feet) has been:

Date	Level	Change
Oct 28	1096.64	-0.10
Oct 29	1096.53	-0.11
Oct 30	1096.63	0.10
Oct 31	1096.77	0.14
Nov 01	1096.77	0.00
Nov 02	1096.78	0.01
Nov 03	1096.83	0.05
Nov 04	1096.85	0.02
Nov 05	1096.86	0.01
Nov 06	1096.88	0.02

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.