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Maple Valley, Black Diamond and King County Recycling Event - is being held Saturday, May 22nd from 9 am until 3 pm at Tahoma High School (new location). For further details including what items are allowed and which are not, please click here for the flyer. Posted 4/26/21 (NEW)

Volunteer Opportunity for Earth Day 2021 -
Join the City of Black Diamond and Lake Sawyer Park Foundation for Earth Day 2021. We will be doing trail maintenance, clearing and removing underbrush and invasive plant, and cleaning park signs and benches. This event will take place on Tuesday, April 27th from 9 am to 11 am at Lake Sawyer Regional Park. For more detailed information, click here. Posted 4/15/21 (NEW)

Parks, Recreation, and Open Space (PROS) Survey -
The City of Black Diamond is updating its PROS Plan and needs your help by filling out the survey and retuning it no later than May 28th. Posted 4/23/21 (NEW)

STATEMENT ON PAUSING J & J VACCINE per DOH Communications (Media Contact) - The Washington State Department of Health will pause the use of the Johnson & Johnson (J & J) vaccine statewide starting immediately, following the guidance of the FDA/CDC. Use of that vaccine will be put on hold until we receive further recommendations from our federal partners about how best to move forward. Safety is the highest priority when it comes to all COVID-19 vaccines.This action is being taken out of an abundance of caution based on the appearance of a rare but serious side effect including serious brain blood clots (CVST) combined with low platelet counts in six patients, all women under 50. The CDC’s Advisory Committee on Immunization Practices (ACIP) will review these cases in the days ahead and will recommend guidance going forward. 

About 149,000 doses of J & J vaccine have been administered in Washington so far, out of more than four million doses total. At this time, we have no knowledge of the six patients who experienced these blood clots being Washington residents.

For those who got the vaccine more than a month ago, the risk of this complication is very low at this time. People who have received the J & J vaccine who develop severe headache, abdominal pain, leg pain, or shortness of breath within three weeks after vaccination should contact their health care provider. It also demonstrates how well the robust vaccine safety monitoring systems work, since this potential safety concern was identified quickly and vaccines were paused to allow for further investigation.

No definitive cause has been identified yet, but the FDA said today that a probable cause is a rare immune response generated by an individual after receiving the vaccine.

DOH will continue to monitor the situation related to J & J vaccine and update on its use as the pause is reviewed and once it is lifted.

Public inquiries: State COVID-19 Assistance Hotline, 1-800-525-0127 Posted 4/14/21 (NEW)

Skatepark Status
- please click here for the most recent update on the Skateboard Park. Posted 4/1/21

Proclamation by Mayor Benson stating that the month of February 2021 is National Black History Month. Posted 2/19/21

NEW FREE COVID-19 TEST SITE IN ENUMCLAW - The City of Enumclaw, in partnership with Mutual of Enumclaw and Public Health – Seattle & King County, would like to announce the opening of a new free COVID test site at Griffin Ave. and Porter St. in the Mutual of Enumclaw parking lot across the street from the Enumclaw City Hall. Entry to the testing site is on Wells St. The site provides drive-through testing. Walk-up testing is also available. It will open on Thursday, December 10 and be open three days a week. The test site will be open Tuesday, Thursday, and Saturday from 10:30 AM – 6:30 PM beginning Thursday, December 10. This is a free testing site and open to anyone, regardless of insurance or immigration status. Funding is provided from CARES Act money, no city funds are used. The testing site will be operated by Discovery Health with support from King County. Mutual of Enumclaw has donated the space for the testing site.

The purpose of this test site in Enumclaw is to increase access in testing in rural parts of the county and reduce travel for those wishing to be tested including Black Diamond, Buckley and Bonney Lake areas. If you have COVID-like symptoms or have had close contact with someone with COVID-19, Public Health – Seattle & King County urges you to avoid contact with others and get tested immediately. Stay home and away from others while you are waiting for test results. People are encouraged, but not required, to register for a testing appointment. Visit for scheduling, registration and additional test site information. Posted 12/10/20

 Inauguration of the City's First Ballot Drop Box - King County Elections (KCE), King County Library System (KCLS) and Black Diamond city leaders, including Mayor Carol Benson and councilmember Bernie O’Donnell, inaugurated Black Diamond’s first ballot drop box at Black Diamond Library with a ribbon-cutting ceremony the same day drop boxes across King County open for ballots. To read the entire press release, click here, and to view picture, click here.  Posted 10/19/20

National Prescription Drug Take Back Day is October 24. The event provides area residents with a safe way to dispose of medications that are out-of-date or no longer needed. King County has seen increases in the use and abuse of heroin and fentanyl. Often opioid misuse starts with using medicine leftover from friends or family members. At home, secure medicine storage (locking cabinet, lockbox, or lock bag) and safe disposal of unused and expired medicines can prevent misuse, overdose, and suicide. If you can’t make it out to the national take back day, you don’t have to wait six months to safely dispose of unused and expired medicines. There are over 100 free and confidential drop box locations operating year-round and located at grocery stores, pharmacies, clinics, and other locations in the area. Visit to find a drop box near you. To find more information about DEA’s National Take Back Day, visit For more detailed information on this program, click here.  Posted 10/5/20

Is there Hazardous Waste Lurking in Your Home? Store, use, and dispose of household hazardous waste safely. To learn about safe disposal and safer alternatives to toxic products, click here for more information provided by Hazardous Waste Management Program. Posted 10/5/20

Black Diamond residents, it's Salmon SEEson! Adult salmon are currently swimming upstream to reach their spawning grounds, after spending a few years out in the ocean. Look for returning salmon at Flaming Geyser State Park from September through December, as well as other local areas. A map of sites and more information can be found at and click on the Salmon SEEson picture off to the right. The press release can be found at (Tip: Open in Google Chrome and copy and paste the web address in the browser) Posted 9/23/20

The City of Black Diamond has been notified by Chief Smith at Mountain View Fire & Rescue that they have closed all open burning until further notice to include recreational fires.  Most likely through next weekend.  Gas BBQ is ok.  Should you have any questions regarding this please call Mountain View Fire & Rescue at 253-735-0284.

PANDEMIC EBT (P-EBT) PROGRAM - This program provides families whose children are eligible for free or reduced-priced school lunches a food benefit that allows them to buy groceries while schools are remote. Click here for more detailed information and how to apply for this program offered by The Washington State Office of Superintendent of Public Instruction (OSPI). DEADLINE IS SEPTEMBER 11th (extended from Aug. 31st)! Posted 8/31/20

King County Manufactured/Mobile Homeowners Rent Assistance Program - Rent Assistance is available in King County for Manufactured/Mobile Home Owners. Please read carefully and share also with your neighbors who might be in need of this assistance.  Both the Department of Commerce and the Washington Low Income Housing Alliance have contacted The Legislative Action Team (LAT), AMHO, MHOA and the Tenants Union regarding this and asked if this information would be shared.

The Department of Commerce announced the release of $100 Million of our state’s "Cares Act Funding for Rental Assistance to Prevent Eviction Across the State". King County has combined its "Cares Act " funding with several other sources and announced the King County Eviction Prevention and Rent Assistance Program.

Homeowners must earn 50% of the area median income or below and have at least one month of rent fully or partially unpaid since March, plus meet at least one additional risk factor.  Homeowners will be selected by a lottery on a weekly basis starting September 14.

Homeowners, landlords (park owners), managers, and nonprofits can learn more by visiting the Department of Commerce Website and click on "Housing".  There is also Manufactured/Mobile Home Information on the Department of Commerce Website. 

These funds are only for King County allotment, there will be funds available for assistance in every Washington County. Additional Information can be obtained by contacting the Washington State Low Income Housing Alliance at  or Posted 8/27/20

BLACK DIAMOND COVID ECONOMIC HARDSHIP GRANTS AVAILABLE for Black Diamond Citizens - The City of Black Diamond is happy to offer a Grant Program to help our citizens with Utility Bill payment assistance or Rental Assistance.  If you are a Black Diamond resident and have been Economically affected by the COVID virus between March 1, 2020 and October 31, 2020, a new Grant program is now available with funds from a portion of the Commerce COVID Cares Act.

Grants of up to $1,000 can be applied for through the Black Diamond Community Center who will be administering the Grant program.  Grant applications can be submitted beginning August 26, 2020 and continuing through October 20, 2020 (while funds are available).  Applications can be picked up at the Black Diamond Community Center at 31605 Third Avenue, Black Diamond or can accessed by clicking here.  For more information about the Economic Hardship Assistance Grant program, please call the Black Diamond Community Center at 360-886-1011 or the City of Black Diamond at 360-851-4500. Posted 8/24/20


King County Rent Assistance Program - The County Executive issued a press release related to the launch of the Eviction Prevention and Rent Assistance program. The press release is located at the following website:

CDBG-CV funding will be available under the Tenant/Small Landlord program. Tenants interested in receiving this assistance should visit the “Information for Tenants” page to submit an interest form located at the following website: Tenants will be chosen by lottery on a weekly basis. Tenants selected from Consortium Cities will be contacted by a community-based organization to help tenants complete the application.  The lottery will launch on September 14, 2020. Tenants not selected will remain in the interested tenant pool and eligible for all subsequent lotteries until the funds are expended. Tenants who are not selected will receive an email every Friday after September 14, 2020 to inform them of their status.

While the website is live, and they are taking interest forms, King County Housing, Homelessness, and Community Development Division are also taking public comments now through August 25th. Posted 8/21/20


Maple Valley, Black Diamond, and King County Recycling Collection Event - July 25, 2020, click here for more information.

Road work on Lawson St. on Wednesday, July 1st and Thursday, July 2nd, click here for more info. Posted 06/26/2020

– June 19, 2020 -  King County as been approved and is now in Phase 2 of the Governor’s Safe Start Plan.  To read more please click herePosted 6/19/2020

Road work on Lawson St. on Monday, June 22nd, click here for more info. Revised date Posted 6/19/20

Please click here to view the united message video from Valley Police Chiefs of King County. Posted 6/17/2020

Please take the City’s stormwater survey by July 24th to help us in our stormwater education efforts. The survey is only 15 questions and should take less than 10 minutes. Posted 06/11/2020

Solid waste self-haul customers required to verify residence in King County's service area. Click here for more information. Posted 06/03/2020

Donate blood at the Pop-Up Donor Center in Black Diamond at the Masonic Center on June 29th and 30th, and July 1st, 8th, and 9th. For more information on how to book an appointment click here. Posted 06/03/2020

Asphalt patching work begins on Lawson Street, click here for more information. Posted 06/03/2020

PUBLIC NOTICE - 2020 Citywide Asphalt Overlays Project - Construction is starting on Tuesday, May 26th, click here for more information. Posted 05/22/2020

PUBLIC NOTICE - Click here for COVID-19 update for the City of Black Diamond regarding closure of City offices through May 4, 2020 . Posted 4/09/20

A Message to Black Diamond residents from your Ciy Council. Please click here to view. Posted 3/26/20

Employee Rights - Paid sick leave and expanded family and medical leave under the Families First Coronavirus Response Act. For more information please click here. Posted 3/25/2020

PUBLIC NOTICE - Click here for COVID-19 update for the City of Black Diamond regarding closure of City offices through Arpil 8, 2020 To view the list of Essential Critical Infrastructure Workers" designated by Governor Inslee as exempt from the order issued on 3/23 please click here. Posted 3/24/202 (NEW)

Along with other cities, City of Black Diamond has been taking necessary steps to keep the residents and their employees safe during this time of turmoil. Please click here to read the Joint Mayoral Statement. Posted 3/24/19

Black Diamond Community Center programming changes in response to COVID-19, starting Marh 16, 2020. For more details click here.

Support of our Local Food and Beverage Establishments - During these arduous times that we are currently experiencing, many business owners will find it difficult to stay in business unless our community residents give their support.. For a list of food and beverage establishments in our immediate area that are offering take-out, delivery or drive-thru services, please click here. They would be extremely grateful for your patronage! Posted 3/19/20

Black Diamond Police Department and Municipal Court is closed to the public beginning Tuesday, March 17 through March 31, 2020 and potentially beyond. If you need to contact us, we are available by phone, email and mail. We appreciate your patience and understanding. Posted 3/17/2020

Black Diamond City Hall is closed to the public other than by appointment beginning Tuesday, March 17 through March 31, 2020 and potentially beyond. We will continue to monitor and evaluate and should you need to schedule an appointment please call 360-851-4560. We appreciate your patience and understanding. Posted 3/16/2020

April 15, 2020 - This event has been postponed until further notice. Upcoming Maple Valley, Black Diamond and King County Recycling Collection Event on May 2, 2020 from 9 am to 3 pm at Rock Creek Elementary School. Click here for more detailed information. Posted 3/16/20

Water Quality Concern on Lake Sawyer - A citizen raised a concern about toxic algae and the King County and the City followed up with the following results:

    9/13/19 (Friday) - A dog passed away after swimming in Lake Sawyer in Black Diamond. Signs were consistent with anatoxin poisoning.

    9/16/19 (Monday) - Black Diamond Public Works collected and submitted two samples at the spot where the dog swam on 229th Pl SE; no bloom present and water was clear.
    Warning signs were posted at 229th Pl SE, the boat launch, and Lake Sawyer Regional Park.
    Testing for freshwater algae toxins did not find toxins above the method detection limit or reporting limit.
    Saxitoxin was not detected (<MDL)
    Cylindrospermopsin was not detected (<MDL)
    Anatoxin was not detected in bottom sample (<MDL), slight detect of 0.013 ug/L in surface but still below reporting limit (<RDL)
    Microcystins were not detected (<MDL)

    9/18/2019 (Wednesday) - King County collected samples at three location around the lake (229th Pl SE, boat launch, and Lake Sawyer Regional Park) and no bloom present and water was clear.
    During sample collection, soil and vegetation was disrupted.
    Testing for freshwater algae toxins did not find toxins above the method detection limit or reporting limit.

    The Toxic Algae Warning is still active for Lake Sawyer and water sampling will continue for an unknown duration. The City will keep the warning signs up until King County Health has made a determination as to the risks of water contact based on further follow up testing.

For Black Diamond Labor Days Citizenship Awards Nomination forms please click here. Nomination forms need to be turned in by 6 p.m. on August 5th. For more information please visit the following webpage Posted 06/25/19

Pacific Coast Coal Company (PCCC) Blasting Schedule. Posted 05/21/19

Recommendation for Draft Comprehensive Plan Update. Posted 10/24/2018.

Palmer Coking Coal is clearing trees near Jones Lake. The harvest of Palmer's timber is located above Jones Lake (Sec. 14-21-6) pursuant to DNR FPA #2419492. (Posted 10/2/2018)

Maple Valley, Black Diamond, and King County Fall Recycling Event-Saturday-October 13, 2018 from 9a.m.-3 p.m. (Posted 10/1/2018)

Update on King County DNRP plans for the Henry’s Ridge/Ravensdale and Taylor Mountain Parks-Henry's Ridge and Ravensdale 

Overview: King County will conduct a forest thinning at Henry’s Ridge Open Space and Ravensdale Retreat Natural Area. In order to increase forest diversity Parks will be conducting variable density thinning operation and then plant over 1,500 trees.

Trail closures: As of September 7th several trails are closed for forestry operations. These closures are estimated to remain in effect until the end of September or early October. Map of trail closure.
Questions? Please review these Frequently Asked Questions or contact Kelly Heintz, Natural Resource Land Planner. or (206) 477-6478. Posted 9/24/2018

Black Diamond-Ravensdale Road SE between SE 310th Street & Kanasket Drive

Due to: Crews will construct a gabion basket wall to correct roadway settlement. Full road closure from Monday, August 13 at 8 a.m. through Friday, September 14 at 3 p.m. No access for emergency vehicles. Detour route will be posted.  Posted 8/27/18

Note:  There has been no adjustment to this closure due to the strike as yet. 

SE 288th Street – Full closure from 239th Place SE to State Route 169
Due to: Full closure of the road for pavement repair excavation work. Motorists will need to use an alternate route.
Closed: Aug 20, 2018 at 7:00 am
Anticipated opening date: Aug 31, 2018 at 5:00 pm

Note:  There has been no adjustment to this closure due to the strike as yet. 

Maxwell Road SE closure begins August 22
Starting Wednesday, August 22 at 7 a.m., a private contractor will conduct culvert installation and road restoration work at Maxwell Road SE near Maple Valley. The work includes excavation, crane mobilization, rebuilding the road and paving. The work requires a full closure of Maxwell Road SE near SE Lake Francis Road for approximately two weeks. During that time, drivers will have to use alternate routes. To view the map, visit the My Commute webpage.
 Follow us on Twitter: removed by sender. Follow us on Twitter  Posted 8/17/18

Black Diamond-Ravensdale Road SE full closure, August 13 – September 14
Starting Monday, August 13 at 8 a.m., crews will repave and install a steel-enforced, rock-filled retaining wall along Black Diamond-Ravensdale Road SE near the City of Black Diamond. The work, which will take place between SE 310th Street and Kanasket Drive, requires a full closure. Detour signs will be posted on site. The work is expected to finish on Friday, September 14 at 3 p.m. To see the map, visit the My Commute webpage.
Follow us on Twitter: us on Twitter   Posted 8/14/18

During the month of August, pavement repair will take place on several sections of roads in southeast King County in preparation for anti-skid treatment. The anti-skid treatment, which will take place in September, increases traction on the roadway. The work is weather dependent, so schedules can quickly change. For more information including the schedule and locations, visit the High Friction Surface Treatment webpage.
Roads to receive pavement repair in August:
SE 452nd Street & SE 456th Way. Map:  
SE Green Valley Road. Map:
SE Kent Kangley Road. Map:
SE 232nd Street. Map:
SE Reinig Road. Map:
SE Petrovitsky Road & 140th Avenue SE. Map:
SE Lake Walker Road. Map:
SE 288th Street. Map:
 Follow us on Twitter: us on Twitter  Posted 8/14/18

"Chip sealing work on 228th Ave. SE/224th Ave. SE/SE 296th St. between SE 312th St. and SE 296th St. scheduled to begin Thursday, August 2, 2018". Posted 7/27/18.

"Portions of Lake Sawyer will be treated with aquatic herbicides on or between July 29th and September 1st". Click here for more information. Posted 7/27/18.

2018 Utility Rates

Draft Comprehensive Plan - April 2018Posted 4/10/18

Notice of Public Review and Comment Period for the Enivornmental Assessment for the John Henry No. 1 Mine WA-0007D Revision Application and Permit Renewal. Posted 9/22/17.

New Washington State Law Cell Phone Implementation-Posted 7/24/17.

New Distracted Driving Law-Black Diamond Police Department participates in Distracted Driver Campaign. Posted 6/30/17

KING COUNTY DEPARTMENT OF ASSESSMENTS-will be conducting residential property inspection for purpose of assessment and valulation of taxable properties. Click here for more information. Posted 4/5/17

News Release - Councilmember Tamie Deady Awarded with Certificate of Municipal Leadership (CML). Click here to read the press release- Posted 08/11/16

News Release - Mayor Carol Benson Awarded with Certificate of Municipal Leadership (CML). Click here to read the press release- Posted 08/09/16

News Release -The Washington State Department of Transportation is conducting a safety study of State Route 169 between the city limits of Renton and Maple Valley. This section of SR 169 is experiencing a particularly high rate of growth. The corridor also presents a complex highway evnvironment because of its use as a commuter and freight route, its proximity to the Cedar River Trail, and its many driveways and businesses. We want to hear from SR 169 users to learn more about their experiences using the corrider between Renton and Maple Valley. WSDOT will use public input, along with a detailed crash anyalysis, to develop recommendations and submit a report to the Legislature at the end of 2016. You can share your input with us in the following ways:

ONLINE SURVEY: September 7-21-

Please take a moment and complete our 2035 Comprehensive plan survey at - Posted 12/30/15

As the new year is quickly approaching the City would like to remind residents that no fireworks can be discharged in the City limits on New Year’s Eve.  In accordance with Black Diamond Municipal Code 8.04.100(B) “No common fireworks shall be discharged within the city except between the hours of nine a.m. and twelve midnight on the fourth day of July of each year.”

King County, WA
– The holiday season is nearly upon us, and the Washington Traffic Safety Commission (WTSC) would like to remind Washingtonians to plan ahead and use alternative transportation after drinking alcohol or using marijuana during celebrations. This year, WTSC is partnering with Uber to help end traffic deaths and serious injuries by 2030 as part of the Target Zero initiative.

Bars and restaurants across the state will be featuring anti-DUI materials and encouraging patrons to take a safe ride home. In areas where Uber is available, the company will also be offering riders $20 off their first trip as part of the effort, with the promo code RIDESAFEWA. Additionally, Uber has recently launched UberEVENTS, which will enable companies to arrange safe rides for their employees throughout the holiday party season and beyond.

Preliminary Fatality Analysis Reporting (FARS) data shows over 500 traffic deaths so far in 2015, nearly 100 more reported deaths than this time last year.

“We have seen an unfortunate increase in traffic deaths this year,” said Darrin Grondel, WTSC director, “By encouraging people to plan ahead over the holiday party season, and to ensure a sober ride home, we hope our state will experience zero traffic deaths in December and through the New Year.”

“We’re committed to providing safe, reliable transportation for Washingtonians year-round, and we’re proud to join forces with WTSC to help prevent traffic casualties this holiday season,” said Brooke Steger, General Manager of Uber Washington. “We want to make it easy for people to leave their keys at home and also give them the peace of mind that they’re not putting others at risk.”

In King County, the Algona, Auburn, Bellevue, Black Diamond, Burien, Clyde Hill, Covington, Des Moines, Enumclaw, Federal Way, Issaquah, Kent, Kirkland, Lake Forest Park, Maple Valley, Mercer Island, Newcastle, Normandy Park, Pacific, Port of Seattle, Redmond, Renton, Sammamish, SeaTac, Seattle, Shoreline, Snoqualmie, and Tukwila Police Departments, the Washington State Liquor Control Board and the Washington State Patrol will be teaming up and participating in the extra patrols, with the support of the King County Target Zero Task Force.

The Washington Traffic Safety Commission embraces Target Zero—striving to end traffic deaths and serious injuries in Washington by 2030, but we can’t get there without you. Driver Sober and be part of our Target Zero Team. Remember, drunk, drugs or high, it’s a DUI. For more information, visit

Approved Final Stormwater Report - Posted 11/24/15

Press Release - Mayor Carol Benson elected Vice Chair of the South County Area Transportation Board - Posted 11/20/15

2011-2014 Stormwater, Baseline and Groundwater Monitoring Report - Posted 11/10/15

General Facility Charges (GFC) Attorney Memo - Posted 11/10/15

Fire Ad Hoc Committee Report- Posted 09/18/15

City of Black Diamond Court/Council Chambers has an updated look. Check out the Court page for the new picture - Posted 09/09/15

MPD 2011-2014 Stormwater, Baseline and Groundwater Monitoring - Posted 03/24/15

**Important Business Hour Changes to the Community Development Department - NOTICE - Posted 07-11-14

PLEASE NOTE! You can now view all public notices by clicking on the PUBLIC NOTICES link on the homepage. Here you will find all posted notices and associated material.

To view Development Agreements and Master Planned Development information and all documents see the DA page or the MPD (Archive) page

To view Public Works project information see the Capital Projects page

To view Current Council packet material look on the new menu bar under I want to ...



If you are a local businessand would like your event posted on the Community Events calendar, please email:

Click here to view the Black Diamond Community map..

Click here to view the COMMUNITY EVENTS CALENDAR

Black Diamond ranked top 15th safest place to live. Click here to view SafeWise Award.

Enumclaw School District:
City of Enumclaw:



Washington Poison Center launches new website. Click here. Posted 8/23/17.(NEW)

. Influenza spreads readily from person to person in schools, workplaces and homes. Everyone over 6 months of age should get the annual flu vaccine to prevent sickness, unnecessary healthcare visits, hospitalizations and deaths from influenza. Visit King County Public Health - Seattle & King County website for updates and more information.

Flu vaccine provides protection against three strains of influenza—the H1N1 strain and 2 other flu viruses. People should get vaccinated now, as soon as the vaccine is available from their healthcare provider or pharmacy – protection lasts throughout the flu season. - Information provided by King County


Pertussis (Whooping Cough) is very contagious and can cause serious illness―especially in infants too young to be fully vaccinated. Pertussis vaccines are recommended for children, teens, and adults, including pregnant women.

Visit the Washington State Department of Health for the most recent information.

Visit for more information.




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