Related by context. Frequent words. (Click for all words.) 54 aquifer 51 groundwater pumping 50 underground aquifer 50 Ogallala Aquifer 50 reservoirs 50 Flaming Gorge 48 reservoir 48 groundwater 47 River basin 47 Aquifer 46 aquifers 46 river basin 46 Creek Reservoir 46 SNWA 45 headwaters 45 underground aquifers 45 River Basin 45 basin 44 Lake McConaughy 44 Edwards Aquifer 44 irrigators 44 Cow Creek 44 river basins 44 Creek tributary 43 Basin 43 Creek Watershed 43 rivers 43 Middle Fork 43 tributary 43 tributaries 42 Reservoir 42 watersheds 42 dams 42 groundwater recharge 42 Water Conservancy 42 basins 41 lakes 41 Great Lakes basin 41 streamflow 41 hydro dams 41 water 41 Irrigators 41 freshwater 41 Big 41 irrigate crops 40 Groundwater 40 Yampa River 40 Upper Klamath 40 streamflows 40 Tuolumne River 40 Irrigation District 40 River 40 drainage basin 40 Snake River 40 diking 39 Geyser 39 Niobrara 39 Friant Dam 39 watercourse 39 River tributary 39 polluted runoff 39 treated effluent 39 snowmelt 39 dam 39 total dissolved solids 39 Effluent 39 Reservoirs 39 Animas River 38 irrigation 38 Canyon Dam 38 tailwater 38 Yampa 38 upstream 38 desalinization 38 trout fishery 38 River Watershed 38 Basins 38 effluent 38 downstream 38 Creeks 38 arroyos 38 Reclamation 38 irrigated agriculture 38 creeks 37 Garrison Dam 37 cfs 37 snow melt 37 coalbed methane 37 aquatic habitat 37 MWD 37 hydrologic 37 Truckee River 37 Mokelumne River 37 streambeds 37 Athabasca River 37 hydrological 37 wastewater discharges 37 Delta smelt 37 Lake Sakakawea 37 Creek 37 Snowpack