How does streambank erosion serve as an indicator of stormwater management issues?

Streambank erosion is an important indicator of stormwater management issues because it directly relates to the effects of excessive runoff and inadequate management practices. When stormwater is not effectively managed, whether through insufficient detention basins, lack of vegetative buffers, or poor grading practices, it can lead to increased volumes and velocities of water flowing over land. This excessive runoff can erode streambanks by washing away soil and sediment, ultimately destabilizing these natural features.

When streambanks are eroded, they signal that the area is experiencing problems with stormwater runoff control. Such erosion can lead to negative consequences, including habitat degradation, water quality issues due to sedimentation, and increased flood risks. Therefore, observing erosion on streambanks serves as a clear warning that stormwater management practices are not meeting the required standards for protecting water resources and maintaining the environment.

In contrast, improved vegetation controls, adequate stormwater treatment, and proper site design practices would typically lead to stabilized streambanks, reduced erosion, and overall healthier aquatic ecosystems.