This is a series of modules published by the USEPA to help states and tribes build their capacity to monitor and assess the biological and nutrient conditions of wetlands. These modules will provide information to water quality managers on how to conduct ecological assessments of wetland health. The modules focus on biological and nutrient assessment techniques and can be used for the development of biological and nutrient criteria for wetlands. These modules also will serve as a basis for developing future EPA guidance for wetlands water quality.