Related by context. Frequent words. (Click for all words.) 63 catchments 63 Catchment 63 Murrumbidgee River 61 catchment 59 Salinity 59 Great Artesian Basin 58 saltmarsh 57 irrigated crops 57 Lake Rotoiti 57 rivers 56 headwater 56 Great Dividing Range 55 aquatic ecosystems 55 Tablelands 55 estuaries 55 watersheds 55 river basins 55 Otways 54 Didymo 54 uplands 54 estuary 54 headwaters 54 tributary streams 54 watercourses 54 intertidal 54 lakes 53 #sq km [003] 53 tributaries 53 waterways 53 groundwater recharge 53 irrigated agriculture 53 aquatic ecosystem 53 drainage basins 53 terrestrial ecosystems 53 watercourse 53 salinity 52 river basin 52 Warrego 52 Wimmera River 52 Clutha River 52 cumecs 52 freshwater ecosystems 52 algal bloom 52 Fitzroy River 52 IWRM 52 mainstem 51 biodiversity hotspot 51 tidal rivers 51 catchment areas 51 aquatic habitats 51 wetland habitats 51 basin 51 siltation 51 Soil moisture 51 forest ecosystems 51 aquifer recharge 50 Sediments 50 streamflows 50 Coorong 50 freshwater 50 nutrient loading 50 aquifers 50 Wilsons Promontory 50 didymo 50 headwater streams 50 Algae blooms 50 lowland 50 hydrological cycle 50 aquatic habitat 50 Severe drought 50 Flinders Ranges 50 Namoi 49 wetland 49 semi arid 49 frequent droughts 49 Solway Firth 49 freshwater lakes 49 Waitaki River 49 waterbirds 49 peat bogs 49 Murrumbidgee 49 inland waters 49 lahars 49 river valleys 49 waterholes 49 wheatbelt 49 gravel extraction 49 soils 49 algal blooms 49 streamflow 49 wetlands 49 riparian 49 seagrasses 49 airshed 49 estuarine 49 rivers creeks 49 Mt Taranaki 49 silting 49 nutrient runoff 49 Manukau Harbour 49 outfalls