1. Freshwater: supply concerns continue, and uncertainties complicate planning;Fennell,2014
2. “Managing Water Under Uncertainty and Risk: The United Nations World Water Development Report 4,” UNESCO Reports;Connor,2012
3. Estimated use of water in the United States in 2015;Dieter;US Geol Surv Circ,2018
4. The intensification of the water footprint of hydraulic fracturing;Kondash;Sci Adv,2018
5. Environmental impacts of hydraulic fracturing;Reible,2016