Which of the following best describes a catch basin layout?

A catch basin layout is designed to effectively manage surface water drainage, and its placement is particularly critical in areas where water tends to gather, such as high points and steep slopes. The rationale behind this is that water naturally flows downhill due to gravity, so positioning catch basins at these high points allows for efficient collection of runoff from surrounding areas.

When placed on steep slopes, catch basins can help prevent erosion and flooding by capturing and directing water away from vulnerable areas. This proactive approach to drainage management is essential in urban planning and civil engineering, enabling the infrastructure to handle heavy rains and prevent potential water accumulation issues.

While other options might suggest different practices, they do not align with effective drainage strategies: spacing every 500 feet does not consider the specific topographical features relevant to water flow, using a single grade stake could lead to inadequate drainage alignment, and limiting catch basins to low-traffic intersections ignores areas with significant runoff potential elsewhere in the landscape. The choice of placing catch basins at high points and steep slopes optimizes their function in urban drainage systems.