Related by context. Frequent words. (Click for all words.) 55 salinization 53 canals 53 Soil erosion 52 diked 52 riparian zones 52 tributary rivers 52 freshwater habitats 52 coastal estuaries 51 freshwater wetlands 51 freshwater marsh 51 threatened delta smelt 50 creeks rivers 50 phosphorus runoff 50 oxbows 49 overfishing pollution 49 streambanks 49 wetlands 49 Everglades ecosystem 49 polluted runoff 49 cypress swamp 49 gully erosion 48 groundwater pumping 48 riparian vegetation 48 aquifer recharge 48 saltwater intrusion 48 periodic droughts 48 Algae blooms 48 traverse Congo 48 Herbert Hoover Dike 48 nutrient runoff 47 waterways 47 By Don Bodger 47 tidal wetlands 47 bd.className + = 47 forested wetlands 47 mussel species 47 Nominal GDP includes 47 channelization 47 groundwater depletion 47 sea lampreys 47 headwater streams 47 coastal dune 47 seagrass beds 47 wetland 46 aquatic ecosystem 46 drainage canals 46 salination 46 lakeshores 46 leafless charred trunks 46 freshwater ecosystems 46 overflowing rivers 46 Sedimentation 46 deltaic 46 tidal creeks 46 freshwater 46 headwater 46 silting 46 river deltas 46 coastland 46 cabbage palms 46 stormwater ponds 45 MRGO 45 recharge groundwater 45 estuaries 45 rivers lakes 45 marshland 45 polluted rivers 45 threatened coho salmon 45 estuary 45 floodplains 45 depleting oxygen 45 nutrient loading 45 cypress swamps 45 Stormwater runoff 45 rivers 45 Septic tanks 45 irrigated agriculture 45 seagrasses 45 aquatic habitats 45 coastal wetlands 45 habitat degradation 45 swamps 45 revegetated 45 groundwater withdrawals 45 seawater intrusion 45 groundwater aquifers 44 nutrient pollution 44 Lake Okeechobee 44 tidal marshes 44 ClickGreen staff 44 wetland ecosystems 44 freshwater marshes 44 sediment runoff 44 aquatic habitat 44 peat swamps 44 aqueducts 44 Delta Smelt 44 Naches River 44 endocrine disruption 44 tributaries 44 Xijiang River