Related by context. Frequent words. (Click for all words.) 63 aquifer recharge 55 groundwater pumping 55 NRDs 55 headwater 54 groundwater recharge 53 irrigated agriculture 53 watersheds 52 basin 52 river basin 52 river basins 52 dewatered 51 groundwater 51 unappropriated 51 streamflows 50 floodplain 50 drainage basin 50 underground aquifers 50 overgrazed 49 navigable waterways 49 aquifers 49 River basin 49 aquifer 49 navigable waters 49 headwaters 49 navigable waterway 49 reservoirs 49 irrigated 49 watershed 49 buffer strips 49 basins 49 Upper Klamath 48 mainstem 48 diking 48 tidal wetlands 48 CREP 48 River Basin 48 streamflow 48 TMDL 48 groundwater basin 47 riparian 47 wetland 47 Ogallala Aquifer 47 dammed 47 wellfield 47 Watersheds 47 freshwater 47 nutrient runoff 46 economically recoverable 46 Great Lakes basin 46 Apalachicola Chattahoochee Flint 46 rivers 46 drainages 46 dischargers 46 PILT 46 irrigators 46 Watershed Protection 46 conjunctive 46 flood plain 45 reservoir 45 upstream reservoirs 45 wetlands 45 creeks rivers 45 injection wells 45 Middle Fork 45 Water Conservation 45 aquatic habitat 45 wetland restoration 45 watercourse 45 lynx habitat 45 bottomlands 45 irrigate 45 irrigated crops 45 consumptive 45 bottomland 45 evaporation ponds 45 tributaries 45 underground aquifer 45 wetlands mitigation 45 tailwaters 44 Wetlands Reserve 44 Flaming Gorge 44 shoreland 44 contaminate groundwater 44 wildlife habitat 44 Soil moisture 44 irrigate crops 44 EQIP 44 Coho salmon 44 Cow Creek 44 riparian habitat 44 swimmable 44 wetland mitigation 44 streambeds 44 rivers creeks 44 fallowing 44 saturated soils 44 hydrologic 44 finite resource 44 ecologically sensitive areas 44 semiarid 44 NPDES