Lake Tapps to begin gradual drawdown

  • Wednesday, September 26, 2018 9:46am
  • News

Cascade Water Alliance announced Wednesday the drawdown schedule for the Lake Tapps Reservoir this fall.

The reservoir, which is full now, will continue to gradually become lower as no additional water is being added.

Then, on Thursday, Nov. 1, approximately elevation 538.5 feet, where it will likely remain for the rest of the fall and winter. The drawdown is necessary for the integrity of the dikes and to ensure safety from wind, storm and wave action during the winter months.

As usual, residents should watch the drawdown and make appropriate decisions regarding watercraft and other property, but it is recommended that boats be out of the water over the next week to ensure their safety.

Because the U.S. Army Corps of Engineers is working on the Mud Mountain Dam Fish Passage Project in the White River, Cascade will not be reducing the reservoir levels during the winter much beyond this level, unless there is a significant need to do so.

Active fill will begin in early March with the anticipation of reaching minimum recreational level of elevation 541.5 to 542.5 feet by mid-April. Cascade will, for a short time during the spring – as it does every year — raise the level up to elevation 543 feet, which is the maximum permissible level for Lake Tapps, to remind residents of the legal high water mark. This is done every year during the spring. Cascade will maintain Lake Tapps at an approximately elevation of 542.5 and 542.8 feet throughout the summer and early fall.

If homeowners are considering any improvements to their property or begin new projects, they should plan to do so between early February and early March. Cascade reminds residents they must obtain all appropriate permits as well as a Cascade license prior to beginning any construction. The time to apply is now.

For more information about Cascade and Lake Tapps, visit and for information regarding licenses for project work, visit

Talk to us

Please share your story tips by emailing

To share your opinion for publication, submit a letter through our website Include your name, address and daytime phone number. (We’ll only publish your name and hometown.) Please keep letters to 300 words or less.

More in News

Screenshot from a YouTube video posted Monday by the City of Auburn with a message from Mayor Nancy Backus and other city officials.
Looting hits Auburn mall and nearby stores; mayor imposes 9 p.m. to 5 a.m. curfew

Auburn is among King County cities seeing protests over the death of… Continue reading

Screenshot of the city’s Facebook page.
Auburn enacts curfew in response to protests and looting

Mayor Nancy Backus declared a state of emergency for the city of… Continue reading

Looters break into 26 Tukwila businesses Sunday night; 9 arrests made

‘What happened in Tukwila was not a protest, it was coordinated looting,’ police say

South King County area police respond to Seattle protests

The responding officers are members of the multi-agency Valley Civil Disturbance Unit, officials say.

Kabal Gill, owner of East India Grill in Federal Way, wears gloves to hand over take-out orders at his restaurant on March 23. File photo
New guidelines for Phase 2 reopenings in King County

All workers will need to wear masks as restaurants, retail shops and other businesses reopen.

This undated file photo provided by U.S. Centers for Disease Control and Prevention shows CDC’s laboratory test kit for the new coronavirus. Courtesy photo
Inslee wants nursing home residents and staff tested by June 12

Governor says state will pay for test kits and personal protective equipment.

Stock image
Campgrounds to reopen in 22 Washington counties

Campgrounds in counties actively in Phase 2 of the reopening plan will begin to welcome visitors June 1, state says.

King County Sheriff Mitzi Johanknecht. FILE PHOTO
King County sheriff releases message about Minneapolis Police officer

Mitzi Johanknecht calls video of officer kneeling on neck of George Floyd ‘heartbreaking and disturbing’

Thursday morning fire spares occupants, home sustains limited damage

No one was hurt and a two-story home sustained only limited damage… Continue reading

Most Read