Snohomish County Public Works Surface Water ManagementOverflow control structures are typically found in detention systems and can include pond cell dividers, spillways, and weirs. Their function is to allow for the escape of water from a detention facility that has reach capicity, or for the regulation of water flow from a normally functioning facility.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/6c2deeb70eed42d99bcd8e3ac1260c66_0engSnohomish County Open Data PortalPublicOverflow Control [Washington (State)--Snohomish County]Web servicesWashington (State)--Snohomish CountyWashington (State)Last Modified: 2022-11-09