We’re excited to announce that the new King County iMap is now live! After a successful transition period, the new iMap is ready for you to explore. The application provides a refreshed experience for discovering King County geographic information while continuing to provide access to the maps and data that iMap users rely on. Explore…
King County GIS Center announces the soft launch of the new King County iMap application, allowing users to explore its features before the legacy version is retired. The modernized iMap, built on a cloud platform, offers enhanced usability, accessibility, and mapping capabilities, while retaining familiar functionalities. Feedback is encouraged during this transition.
Update from 911 GIS MSAG Coordinator and Engineer, Rhonda Parrish As the newest member of King County’s 911 Program Office, I support the work of our 911 GIS Team, which manages address and road additions and updates in close collaboration with the 41 addressing authorities across the county. Together, we ensure that the GIS data…
This guide outlines practices for establishing an effective AI-assisted development workflow. It emphasizes the importance of structured project organization, using professional AI tools, creating clear specifications, and thorough documentation. Incremental development, source control, and testing are highlighted as essential for efficient and quality outcomes, ultimately streamlining the coding process.
The GIS Center launched a revamped Open Data site in early 2026, featuring a more user-friendly design and improved data hosting via ArcGIS Online. Users must migrate from legacy services, set to retire on June 1, 2026. Resources for assistance and verification of service layers are available on the site.
Introduction Sometimes the best reminder of why GIS matters comes from seeing it through fresh eyes. Recently, an energetic 8th grader with a real passion for maps and geography visited the King County GIS Center with his mom for a lunchtime learning adventure. His excitement, curiosity, and thoughtful questions made it a memorable visit with…
December 2025 saw record-breaking flooding in the Pacific Northwest. With some areas seeing over 15 inches of rain in 72 hours, our region saw damage to more than 400 residences, two levee failures, and several major road closures. The Regional Communication and Emergency Coordination Center (RCECC) requested 24-hour GIS coverage beginning on December 10, 2025.…
In 2025, the King County GIS Center received dual Enterprise GIS Awards from Esri, honoring more than three decades of leadership and excellence in GIS. Recognized at both the CIO Summit and the Esri User Conference, KCGISC continues to deliver countywide value, from emergency response to public health, with a projected ROI of $3 billion by 2025 that underscores its sustained innovation and collaboration.
King County is proud to have been honored with the 2025 Exemplary Systems in Geospatial (ESIG) Award in the Single Process Systems category by the Geospatial Professional Network (GPN, formerly URISA). This recognition honors our innovative AI-GIS Strengthened State Environmental Policy Act (SEPA) Response Letter Generator, a novel system that integrates geographic information systems (GIS)…
The King County GIS Center faced performance issues with the Districts and Development Conditions report, particularly for parcels with multiple Shoreline Management Designations, resulting in slow loading times and timeouts. By upgrading server resources and optimizing queries, they reduced load times from over 20 seconds to approximately 2 seconds, enhancing public service efficiency.
In a recent web newsletter (“May 2025 Unincorporated Area Community News“), the King Co. Dept. of Local Services highlighted a series of community conversations for which the KCGIS Center provided support. GIS Analysts Chris Landback, Josh Popelka, Toni Carpenter and Paul McCombs implemented invaluable materials for these meetings. Community members were invited to share their…
The King County GIS Center received the 2024 URISA Exemplary Systems in Government award for its new interactive Aerial Imagery Program web application, improving the management and ordering of high-resolution aerial imagery. This streamlined process has saved over one hundred hours of staff time, enhancing efficiency for local jurisdictions.
In October, I attended the URISA annual GIS-Pro Conference in Portland, where URISA rebranded as the Geospatial Professional Network. A personal highlight was receiving the ESIG Award for King County’s SOGIS. The new Esri ArcGIS Hub platform improves access and engagement, streamlining the preparation of GIS documentation significantly.
King County aims to address equity issues through its Equity and Social Justice Plan. To measure its success, it has identified 15 conditions and uses StoryMaps, Dashboards, and Instant Apps to present the data. The Determinants of Equity data tool has been successful, leading to the development of training sessions for users.
Climate change is a growing concern due to extreme weather events and infrastructure damage. Trees play a crucial role in mitigating this by absorbing CO2 and producing oxygen. High-resolution LiDAR data is used to create tree canopy models to track changes in tree cover, vital for environmental and economic well-being. An estimate of over 101 million trees in King County underscores the importance of accurate inventory and conservation efforts.
