What does a successful BMP assessment after a rain event indicate?

A successful BMP (Best Management Practices) assessment following a rain event indicates that the erosion and sediment control measures in place are functioning as intended. This means that the practices effectively managed the runoff, preventing soil and sediment from being washed away from the site, thereby minimizing environmental impact.

When BMPs are effective, they demonstrate that the design and implementation were adequate to handle the anticipated rainfall and associated runoff. This confirms that the practices can successfully protect water quality by controlling sedimentation and erosion, which are critical goals of erosion prevention and sediment control measures.

In this context, while increased maintenance needs, more frequent inspections, and better materials might play a role in overall BMP effectiveness, they do not directly measure the success of the BMPs themselves after a rain event. Effectiveness is demonstrated through the observation that erosion and sediment have been adequately controlled during the assessment.