Emergency Alert Flood Polygons

This geographic dataset was updated by Boulder County Sheriff's Office Communications staff during summer 2023, to be WEA compliant and to provide coverage of all major waterways in Boulder County, including areas of City of Longmont and Town of Erie into Weld County (covered by BRETSA 911). We collaborated with Boulder County Sheriff's Office Law and Emergency Services personnel, Law/Police officials from most legal cities or towns, Boulder County Fire Districts, and Boulder Office of Emergency Management within our Public Safety Answering Point's area of authority that are susceptible to flooding events. This dataset is intended to be a flood hazard set of pre-created areas for reverse 911 notifications, for life safety purposes. The emergency responder (FIRE/LAW) would notify the BOCO 911 Communications Center about which zones to evacuate in the event of a flooding emergency. The 911 dispatch staff could use these pre-created flood hazard polygons to send a reverse notification to the area of interest. Steps to incorporate the areas of flood interest included: 1.) Obtaining new hydrological models for recently burned areas due to 2020 CalWood Fire burn scar; 2.) Utilizing Colorado Water Conservation Board post 2013-flood data (CHAMP) to unerstand updated flood risk; 3.) Meeting with publlic safety stakeholders to review their local areas of interest during collaborative working sessions, incorporating stakeholder feedback; 4.) Applying a 1/8 mile buffer to such areas of modeled interest; 5.) Simplifying edges of flood polygons to be Wireless Emergency Alert compliant; 6.) Importing the data into the emergency reverse notification tool and reviewing the resulting boundaries to ensure citizens are appropriately included in the areas of interest.