Features looped walking paths, children's play area, picnic shelters, fishing dock, restrooms, two tennis courts, a basketball court, a sand volleyball court, and a parking lot.

Community Events held at Lake Boren include: Concerts in the Park Series, 4th of July and Newcastle Days.

Picnic shelters are available for use by first reserving the date by phone and then submitting a reservation form to City Hall.

Hours of Availability: 8:00 a.m. to 8:00 p.m.

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • No data available

  • Current Status
  • This status is based on the latest sample. King County Department Natural Resources and Parks updates the status of this beach as soon as test results become available.
For water quality icon legend, click:  
Monitoring Frequency

Lake Boren is not sampled

Source Information

The King County Department of Natural Resources and Parks monitors water quality at designated swimming beaches in the county from May to September. Water quality data is collected weekly, usually on Tuesdays. Results are generally posted to the King County Lake Swimming Beach Bacteria Monitoring page by noon on Wednesday.

Local health officials use the following protocol to make closure determinations – A day’s average E. coli value is over 1000 CFU/100 mL – OR - The average of the E. coli values for the three most recent sampling days is over 200 CFU/100 mL. The three-day average is calculated using the geometric mean (geomean). The unit of measure is a CFU which stands for Colony Forming Units.

The King County Water and Land Resources Division (WLRD) collects and analyzes the samples. Public Health Seattle & King County is alerted when bacteria or state algal toxin thresholds are exceeded and determines the health and safety implications of the bacteria and algal toxin data collected, and they work with King County WLRD and the local park manager to post an advisory.

A beach is marked Green (open) when both of these protocols are met.
A beach is marked Red (closed) when these criteria are not met and the public health officials have closed the beach.

A beach may also be marked Red if there is a Harmful Algal Bloom (HAB) reported at the beach. A beach is marked Grey when current water quality data is not available.


For more information go to King County Swimming Beach Bacteria Monitoring website: kingcounty.gov/swimbeach.

Read more
Water Quality Graph

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • No data available
  • Current Status
  • This status is based on the latest sample. King County Department Natural Resources and Parks updates the status of this beach as soon as test results become available.
For water quality icon legend, click:  

Features looped walking paths, children's play area, picnic shelters, fishing dock, restrooms, two tennis courts, a basketball court, a sand volleyball court, and a parking lot.

Community Events held at Lake Boren include: Concerts in the Park Series, 4th of July and Newcastle Days.

Picnic shelters are available for use by first reserving the date by phone and then submitting a reservation form to City Hall.

Hours of Availability: 8:00 a.m. to 8:00 p.m.

Monitoring Frequency

Lake Boren is not sampled

Source Information

The King County Department of Natural Resources and Parks monitors water quality at designated swimming beaches in the county from May to September. Water quality data is collected weekly, usually on Tuesdays. Results are generally posted to the King County Lake Swimming Beach Bacteria Monitoring page by noon on Wednesday.

Local health officials use the following protocol to make closure determinations – A day’s average E. coli value is over 1000 CFU/100 mL – OR - The average of the E. coli values for the three most recent sampling days is over 200 CFU/100 mL. The three-day average is calculated using the geometric mean (geomean). The unit of measure is a CFU which stands for Colony Forming Units.

The King County Water and Land Resources Division (WLRD) collects and analyzes the samples. Public Health Seattle & King County is alerted when bacteria or state algal toxin thresholds are exceeded and determines the health and safety implications of the bacteria and algal toxin data collected, and they work with King County WLRD and the local park manager to post an advisory.

A beach is marked Green (open) when both of these protocols are met.
A beach is marked Red (closed) when these criteria are not met and the public health officials have closed the beach.

A beach may also be marked Red if there is a Harmful Algal Bloom (HAB) reported at the beach. A beach is marked Grey when current water quality data is not available.


For more information go to King County Swimming Beach Bacteria Monitoring website: kingcounty.gov/swimbeach.

Read more
Water Quality Graph

  Beach Location Water Quality
Renton, Washington
Renton, Washington
Bellevue, Washington
Mercer Island, Washington
Swim Guide
is supported by
* The RBC Foundation

Swim Guide shares the best information we have at the moment you ask for it. Always obey signs at the beach or advisories from official government agencies. Stay alert and check for other swimming hazards such as dangerous currents and tides. Please report your pollution concerns so Affiliates can help keep other beach-goers safe.

Swim Guide, "Swim Drink Fish icons," and associated trademarks are owned by SWIM DRINK FISH CANADA. See Legal.

© SWIM DRINK FISH CANADA, 2011 - 2022