biostudies-literatureKuhn AIntramural EPA1-604https://www.ebi.ac.uk/biostudies/studies/S-EPMC6071426biostudies-literatureUnknown10(5)Watershed integrity, the capacity of a watershed to support and maintain ecological processes essential to the sustainability of services provided to society, can be influenced by a range of landscape and in-stream factors. Ecological response data from four intensively monitored case study watersheds exhibiting a range of environmental conditions and landscape characteristics across the United States were used to evaluate the performance of a national level Index of Watershed Integrity (IWI) at regional and local watershed scales. Using Pearson's correlation coefficient (<i>r</i>), and Spearman's rank correlation coefficient (<i>r_s</i> ), response variables displayed highly significant relationships and were significantly correlated with IWI and ICI (Index of Catchment IntegritWaterPerformance of National Maps of Watershed Integrity at Watershed Scales.PMC6071426EPA999999Massie JALake JLHollister JWLeibowitz SGCompton JEKuhn AJames JFlotemersch JEBrooks JRSmucker NJSerbst JRBennett MGJohnson ZCAlexander LCLin JEbersole JLNietch CTfalsePerformance of National Maps of Watershed Integrity at Watershed Scales.Watershed integrity, the capacity of a watershed to support and maintain ecological processes essential to the sustainability of services provided to society, can be influenced by a range of landscape and in-stream factors. Ecological response data from four intensively monitored case study watersheds exhibiting a range of environmental conditions and landscape characteristics across the United States were used to evaluate the performance of a national level Index of Watershed Integrity (IWI) at regional and local watershed scales. Using Pearson's correlation coefficient (<i>r</i>), and Spearman's rank correlation coefficient (<i>r_s</i> ), response variables displayed highly significant relationships and were significantly correlated with IWI and ICI (Index of Catchment Integrit2018-01-01T00:00:00Z2018 May2025-04-19T20:58:14.545Z2019-03-26T23:50:00ZS-EPMC60714263007925410.3390/w10050604