. Author manuscript; available in PMC: 2020 Dec 20.

Published in final edited form as: Water (Basel). 2019 Dec 20;12(1):39. doi: 10.3390/w12010039

Table A1.

Performance ratings of recommended statistics for streamflow simulations (modified from [53–55]).

Performance Rating	R²	NSE	RSR	PBIAS (%)
Performance Rating	R²	NSE	RSR	Streamflow	Sediment

Very Good	0.7 <R² ≤1	0.75 < NSE ≤ 1	0 ≤RSR ≤0.5	PBIAS < ±10	PBIAS < ± 15
Good	0.6 < R² ≤ 0.7	0.65 < NSE ≤ 0.75	0.5 < RSR ≤ 0.6	±10 ≤ PBIAS < ±15	±15 ≤ PBIAS < ±30
Satisfactory	0.5 < R² ≤ 0.6	0.5 < NSE ≤ 0.65	0.6 < RSR ≤ 0.7	±15 ≤ PBIAS < ±25	±30 ≤ PBIAS < ±55
Unsatisfactory	R² ≤ 0.5	NSE < 0.5	RSR > 0.7	PBIAS ≥ ±25	PBIAS ≥ ±55