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Mapping watershed integrity for the conterminous United States.
Thornbrugh DJ, Leibowitz SG, Hill RA, Weber MH, Johnson ZC, Olsen AR, Flotemersch JE, Stoddard JL, Peck DV. Thornbrugh DJ, et al. Ecol Indic. 2018 Feb 1;85:1133-1148. doi: 10.1016/j.ecolind.2017.10.070. Ecol Indic. 2018. PMID: 29628801 Free PMC article.