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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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