Related by context. Frequent words. (Click for all words.) 70 aquifer 69 underground aquifer 65 aquifers 64 groundwater basin 64 groundwater 62 reservoir 62 underground aquifers 60 Ogallala Aquifer 59 groundwater pumping 59 reservoirs 58 Aquifer 58 wellfield 57 basin 57 water 57 headwaters 57 saltwater intrusion 56 drainage basin 56 groundwater recharge 55 unnamed tributary 55 Edwards Aquifer 54 Groundwater 54 Creek tributary 54 injection wells 53 Reservoir 53 sewage lagoon 52 tailwater 52 tributary 52 dewatered 52 drainage basins 52 artesian 52 wastewater 52 snow melt 52 mgd 51 creek 51 seepage 51 lake 51 submersible pumps 51 watercourse 51 dewater 51 reinjection 50 Anticline 50 tributaries 50 headwater 50 tailwaters 50 dissolved solids 50 wells 50 river basin 50 lakebed 50 freshwater 50 streamflow 50 snowmelt 50 irrigate crops 50 basins 50 streamflows 50 Lake McConaughy 50 total dissolved solids 50 Angat Dam 49 polluted groundwater 49 aquatic habitat 49 floodplain 49 treated effluent 49 streambed 49 brackish 49 watersheds 49 turbidity 49 River basin 49 bottomland 49 wastewater discharge 49 silty 49 dissolved oxygen levels 49 salinity 49 sedimentation 49 dewatering 48 Raw sewage 48 hydrologic 48 wastewater treatment 48 Mokelumne 48 sediment 48 lakes 48 Lake Allatoona 48 bottomlands 48 brackish water 48 Garrison Dam 48 streambeds 48 creeks 48 rivers 48 Middle Fork 48 saturated soils 48 storage caverns 47 potable 47 Elevation normal 47 alluvium 47 Ouachita River 47 drainages 47 untreated wastewater 47 coulee 47 spillway 47 sandy soils 47 chloramines 47 dissolved oxygen 47 diking