When reviewing plans, what two key elements must be determined regarding water?

The focus of this question is to identify the critical aspects of managing water when reviewing plans, particularly in the context of stormwater management, erosion, and sedimentation control. Understanding how water enters and leaves the site is essential because it directly impacts the overall water balance, erosion potential, sediment transport, and the effectiveness of any stormwater management practices implemented on the property.

Assessing how water enters the site involves analyzing surface runoff, groundwater infiltration, and potential contributions from upstream areas. Conversely, understanding how water leaves the site is critical to prevent flooding, minimize runoff, and ensure that off-site impacts are managed effectively, thereby adhering to regulatory requirements and protecting local water quality.

By focusing on the pathways of water entering and leaving the site, planners can devise strategies to manage runoff sustainably, implement appropriate erosion and sediment controls, and ensure compliance with environmental regulations. This encompasses a broad understanding of hydrology that is fundamental in stormwater management practices.