Related by context. Frequent words. (Click for all words.) 65 irrigate 55 irrigating 55 irrigation 55 irrigated 54 irrigated agriculture 54 underground aquifers 54 water 51 aquifers 50 desalinated water 50 irrigates 50 reservoirs 49 groundwater pumping 49 groundwater 49 irrigation ditches 48 aquifer 48 irrigation canals 47 collect rainwater 47 river basin 47 brackish water 46 potable 46 freshwater 46 rainwater 46 brackish 45 potable water 45 arable land 45 cropland 45 mgd 45 irrigators 45 groundwater recharge 45 treated effluent 45 drip irrigation 45 untreated wastewater 45 drinkable water 44 arid regions 44 crops 43 river basins 43 crop yields 43 rivers 43 irrigation ditch 43 gallons 43 Ogallala Aquifer 43 effluent 42 fertilize 42 semi arid 42 hydroelectric plants 42 chemical fertilizers 42 wastewater 42 rivers lakes 42 flushing toilets 42 farmers 41 septic tanks 41 Reservoirs 41 ponds 41 nitrogen fertilizer 41 arid 41 Groundwater 41 irrigation canal 41 flush toilets 41 reverse osmosis 41 untreated sewage 41 croplands 41 fertilizers pesticides 40 Atrazine 40 sewage 40 prolonged drought 40 dams 40 Irrigation 40 hydroelectricity 40 aerate 40 soil moisture 40 dammed 40 grazing cattle 39 lagoons 39 drought stricken 39 subsistence farmers 39 rainfall 39 artesian 39 liters 39 streamflow 39 reservoir 39 farmlands 39 snowmelt 39 forage 39 seawater 39 mountain snowpack 39 Water Conservancy 39 nitrates 39 cistern 39 tributaries 39 parched 39 megalitres 39 aerators 39 cultivable land 39 cusecs 38 sprayers 38 herbicides 38 salinity 38 raw sewage 38 watersheds 38 dairies 38 biofuel crops