1. NOAA/NWS/NCEP/CPC, A. Artusa, D. Bathke, C. Fenimore, B. Fuchs, R. Heim, E. Luebehusen, D. Miskus, B. Rippey, M. Rosencrans, D. Simeral, M. Svoboda, R. Tinker, U.S. Drought Monitor, The National Drought Mitigation Center, Lincoln, NE, 2016.
2. U.S.EIA, Annual Energy Outlook 2014 with projections to 2040, Washington, DC, 2014.
3. Environmental Impacts of Hydraulic Fracturing;Spellman,2012
4. Water management challenges associated with the production of shale gas by hydraulic fracturing;Gregory;Elements,2011
5. Impact of shale gas development on regional water quality;Vidic;Science,2013