Monitoring should be a key component of any dam removal process, both to ensure that project goals and objectives were met and to improve the practice of dam removal. The project team should develop a monitoring plan that covers pre‐project monitoring, monitoring during construction and post project monitoring. A project might be monitored for changes in fish population, temperature, dissolved oxygen, or physical changes to the stream channel among other things. Many permits will also require some form of project monitoring.
There are many documents which describe methods for monitoring, for example, the Gulf of Maine Council on the Marine Environment developed a handbook titled, “Stream Barrier and Removal Guide.” This guide provides pre‐ and post‐dam removal monitoring guidelines that provide methods to assess impacts on sediment transport, stream channel morphology, fish passage, macroinvertebrates, water quality, and riparian vegetative communities. The guide is available online.