长沙推进建立“最小应急管理单元”，筑牢城市排水防涝安全线

Core Viewpoint - The city of Changsha is implementing a comprehensive emergency management strategy to address road flooding caused by heavy rainfall, focusing on enhancing drainage capabilities and establishing a coordinated response mechanism among various departments [3][4]. Group 1: Emergency Response Measures - The local government has constructed temporary barriers using sandbags and water boards to prevent water intrusion into vulnerable areas such as garages and shops during heavy rain [2]. - A significant elevation of approximately 40 centimeters has been made to the garage entrance to mitigate flooding issues, alongside the installation of water barriers [2]. - A total of 269 potential risk points have been identified, with tailored emergency response plans developed for each location to ensure effective management during rainfall events [3]. Group 2: Infrastructure Improvements - The city is undertaking a second phase of rainwater and sewage separation construction to enhance the drainage capacity of the existing pipeline network, which is expected to be completed by March next year [2]. - The establishment of "minimum emergency management units" has been initiated, comprising personnel from various departments to ensure rapid response to flooding incidents [4]. - Ongoing improvements to drainage systems and flood prevention measures have been implemented, including the cleaning and dredging of key waterways to enhance the city's overall flood resilience [4].