Related by context. Frequent words. (Click for all words.) 48 Ogallala Aquifer 48 groundwater basin 48 aquifer 47 groundwater 46 total dissolved solids 46 Snowpack 46 groundwater pumping 45 aquifers 45 streamflows 45 Floridan Aquifer 44 Anticline 44 Groundwater 44 underground aquifer 43 sandy soils 43 Plains 43 Aquifer 43 aquifer recharge 42 Soil moisture 42 Sediments 42 wellfield 41 irrigated farmland 41 Salinity 41 Variability 41 streamflow 41 Snowmelt 41 mountain snowpack 41 groundwater recharge 41 Carbonate 40 Performance Computing HPC 40 soils 40 Sediment 40 geologic formations 40 frac sand 40 reservoirs 39 salinity 39 dissolved oxygen levels 39 soil moisture 39 headwater 39 alluvial deposits 39 dissolved solids 39 underground aquifers 39 basins 38 Creek tributary 38 nitrate 38 turbidity 38 percolation 38 irrigated agriculture 38 reservoir 38 Reservoirs 38 Edwards Aquifer 38 effluent discharge 38 evaporation ponds 38 Water Reclamation Facility 38 fecal coliform bacteria 38 treated effluent 38 River basin 37 streambed 37 snow melt 37 water 37 arid regions 37 fecal bacteria 37 hydrological cycle 37 Magnetic Field 37 snowmelt 37 geological formations 37 magma chamber 37 marine sediments 37 Reservoir 37 snowpack 36 Today Mostly sunny 36 nitrates 36 snowpacks 36 streambeds 36 Effluent 36 Soils 36 geologic formation 36 Carbon Dioxide 36 Nitrates 36 headwaters 36 Hydrological 36 irrigated 36 artesian 36 subsurface 36 irrigated crops 35 alluvium 35 saltwater intrusion 35 River Basin 35 hydrologic 35 rainfall 35 basin 35 upstream reservoirs 35 lakebed 35 seepage 35 Graduation Rates 35 injection wells 35 Precipitation 35 glacial melt 35 Sinkholes 35 COASTAL BEND 35 bottomland 35 gravel extraction