Lake Tapps Reservoir to Rise to 543′ this Week

This week Cascade Water Alliance will raise the Lake Tapps Reservoir to approximately elevation 543 feet, the maximum allowable level at which Cascade can operate. The reservoir will reach this elevation on or around May 15 and will then be drawn down slightly to normal recreational summer levels.

Cascade has raised the reservoir to the maximum allowed at least once each year since it took ownership in late 2009, as a reminder to homeowners that this is the maximum fill level under operating agreements with the Lake Tapps Community Council.  After the maximum fill, Cascade will keep the reservoir between elevation 541.5 to 543 feet, usually between 542.5 and 542.7 feet, through late September, weather dependent.

For the latest in current and historic lake level information please visit

For more information on Lake Tapps / Cascade agreements visit

For more information on Cascade visit