Which of the following maps is NOT beneficial in water rescue?

Aerial maps are primarily used for providing a bird's-eye view of geographical areas, showcasing features like buildings, roads, and natural landscapes from an overhead perspective. While they can be helpful in general navigation and understanding the layout of an area, they often lack critical information about water bodies, currents, depths, and other hydrological features essential for water rescue operations.

In contrast, city maps can provide detailed insights into urban waterways, including access points and infrastructure. Provincial maps can cover larger areas, detailing waterways and potential hazards across broader regions. Topographic maps give vital information about elevation changes and terrain, which are crucial in navigating water rescues, especially in areas where riverbanks or cliffs may complicate rescue attempts.

Therefore, aerial maps may not showcase the specific, relevant details needed for effective planning and execution of water rescue missions, making them the least beneficial option in this context.