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County survey crew working in Number 1 Canyon drainage

Wenatchee’s Number 1 Canyon can be characterized as having a steep channel throughout its 6.8-square-mile basin, allowing for mud, rock and other debris to flow down through the channel during heavy rains or flood waters that occur on the order of 10-year and greater recurrence intervals.  When this happens, flooding of private and public property occurs, leaving costly cleanup to homeowners, Chelan County and the City of Wenatchee.

In June, Northwest Hydraulic Consultants of Seattle, or NHC, was hired by the Chelan County Flood Control Zone District (FCZD) to complete a needs analysis of Number 1 Canyon. The $114,500 project is being paid for by the FCZD.

The needs analysis, sometimes called a gap analysis, will analyze the basin’s conveyance as a whole and determine where and what is needed to minimize the damage experienced from this type of flooding event. It will be a tool in guiding future capital projects that protect property and the public’s health and safety from flooding.

Chelan County’s survey crew is playing an important part in this process, as the crew is gathering the necessary data for the needs analysis. The crew is recording the natural and artificial physical features of Number 1 Canyon, both in the city and county limits. The county’s survey crew uses clearly marked vehicles. It does not do work on private property.

If you have a question about the project, please contact Chelan County Public Works directly at 667-6415. Or email us at fczd@co.chelan.wa.us.

Last Updated: 08/24/2021 09:04 AM

Chelan County Calendar

Upcoming events and schedules at the county!

  • 17
    Mar 2025
    11:00 AM - 04:00 PM

    Veterans Hall Blood Drive March 17

    Posted by: Veterans Program

    Veterans Hall Blood Drive March 17 from 11 a.m. to 4 p.m.

    Wenatchee Veterans Hall
  • 12
    Mar 2025
    11:00 AM - 12:00 PM

    Chelan County Civil Service Commission

    Posted by: Human Resources

    The Chelan County Civil Service Commission will be meeting on March 12, 2025. (Notice Time Change)

    Chelan County Commissioners Office, CM Conference Room 1
  • 05
    Mar 2025
    09:00 AM - 10:00 AM

    Hearing Examiner - March 5, 2025

    Posted by: Community Development

    By Zoom Video Conference or in person at 400 Douglas St.
  • 01
    Mar 2025
    09:00 AM - 04:00 PM

    Monthly Drop-Off Saturday - March 1, 2025

    Posted by: Solid Waste Management

    Drop-off Saturday at the Moderate Risk Waste Facility is March 1.

    Chelan County Moderate Risk Waste Facility
  • 21
    Feb 2025
    09:30 AM - 10:30 AM

    Public Meeting: Public Canvassing Board Meetings

    Posted by: Chelan County Elections

    The Canvassing Board of Chelan County, pursuant to RCW 29A.60.160, will hold public meetings at the dates and times listed below. The meetings of the Canvassing Board are open, public meetings under the applicable provisions of chapter 42.30 RCW, and each meeting shall be continued until the activity for which the meeting is held has been completed.

    Chelan County Auditor’s Office