Related by context. Frequent words. (Click for all words.) 65 aquifer 62 aquifers 60 groundwater 55 Aquifer 53 Groundwater 51 reservoirs 51 river basins 51 headwaters 50 reservoir 49 freshwater 49 River Basin 48 River basin 46 Water Conservancy 46 river basin 46 watersheds 45 Roan Plateau 45 irrigators 45 coalbed methane 45 natural gas 45 Water Conservation 44 Powder River Basin 44 cropland 44 Barnett Shale 44 Piceance Basin 44 wildlife habitat 44 water 43 Appalachian Basin 43 Keystone XL 43 Lake Sakakawea 43 basins 43 Haynesville Shale 43 Lake Okeechobee 42 hydrologic 42 irrigation 42 shale formations 42 Niobrara 42 fracking 42 Irrigation District 42 Marcellus Shale 42 wells 42 Ogallala 42 basin 42 Water Resources 42 Marcellus shale 42 Platte River 42 trout streams 41 ranchers 41 farmland 41 LCRA 41 wetlands 41 irrigated 41 Reclamation 41 Williston Basin 40 snowpack 40 coastal wetlands 40 Klamath Basin 40 hydraulic fracturing 40 Fayetteville Shale 40 soil moisture 40 drought stricken 40 hydrological 40 lakes 40 river valleys 40 Cushing Oklahoma 39 mgd 39 Reservoirs 39 wetland 39 corn acreage 39 ANWR 39 acreage 39 shale gas 39 semi arid 39 grasslands 39 bed methane 39 Basin 39 riparian 39 undeveloped land 39 Murray Darling 39 arable land 39 Salton Sea 39 Reservoir 39 Irrigation 39 rivers 39 rangeland 39 feedlot 39 rangelands 39 landowners 39 Bcf 38 Rocky Mountains 38 habitat 38 XTO Energy 38 coal seam gas 38 groundwater contamination 38 wastewater 38 aqueduct 38 Natural Gas 38 feedlots 38 contaminated groundwater 38 Haynesville 38 tributary 38 hydrology