What is the name of the mapped record that provides a detailed picture of a portion of the distribution system?

The term 'sectional map' refers to a specific type of mapped record that focuses on a detailed representation of a portion of a water distribution system. These maps typically illustrate the layout, infrastructure, and geographical elements of a selected area, providing valuable information for maintenance, planning, and emergency response. They are essential for operators and engineers to understand how different components interact within a localized section of the overall distribution network.

Unlike the other options, a sectional map emphasizes a specific segment, allowing for a granular view of pipelines, valves, hydrants, and other critical features. Comprehensive maps might include broader information for an entire system but lack the focused detail seen in sectional maps. Individual layouts could refer to specific elements or components rather than a broader network segment. Regional overviews typically encompass larger areas without the in-depth detail necessary for localized operations found in sectional maps. Therefore, the designation of 'sectional map' directly aligns with the need to understand specific portions of the distribution system in detail.