In today’s regulatory environment it is no longer enough just to install stormwater practices and hope they are doing a good job. Now we need to monitor practices to assess their effectiveness and evaluate their pollutant removal efficiencies. Specific numeric goals in TMDL’s and other regulations mean that documenting real-world performance has taken on an important role in the daily functions of the stormwater and watershed professional. In this webcast we will look how some communities have responded to the increased need to document BMP performance and present case studies of monitoring design and results.