| Drivers |
| Class 1 (Degrade Water Quality) Nutrient Enrichment/Eutrophication Organic Carbon and Thermal Loading Biogeochemical Alteration Chemical Contaminants Sewage Inputs Pathogens |
| Class 2 (Impact Habitat) Watershed Development Watershed Impervious Cover Sediment/Particulate Inputs Dredging and Dredged-Material Disposal Shoreline Hardening Erosion Lagoon Construction Land Reclamation Coastal Subsidence |
| Class 3 (Alter Biotic Communities) Human-altered Hydrological Regimes Overfishing Intensive Aquaculture Invasive/Introduced Species Floatables/Plastics/Debris |
| Class 4 (Climate Linked) Climate Change Drivers CO2, CH4, NO2, Chlorofluorocarbons, (Greenhouse Gases) Warming Temperatures Precipitation and Land Runoff Extreme Events Hurricanes and Other Major Storms Storm Surges Tornadoes Droughts |