Visual assessment

Regular inspection of stormwater best management practices (BMPs) is critical to ensure that they are functioning as designed.  If stormwater isn't being diverted off roadways and into the structures,  pollutants can't be removed from the contaminated water. 

BMPs need to remain free of trash, leaves, sediment and debris that would obstruct stormwater from flowing into and out of the structure and slow down proper drainage rates.   If stormwater isn't draining into the ground within 48 hours after a rain event, there is likely a problem with the performance of soils in the structure. 

Healthy and proper vegetation in the BMP structures is an important part of the performance of the BMP system as they soak up and filter nutrients. 

Photo and video documentation of BMPs over time is also an essential piece of information in monitoring BMPs long term.