Table 1.

Multiple linear regression results for the three models (shown in Fig. 5)

Model	Sample size	R2	Residual mean absolute error, %	Precipitation coefficient and 95% CI	ETo coefficient and 95% CI
All	3,119	0.271	23.3	1.41 [1.32, 1.50]	−1.09 [−1.42, −0.76]
Natural	570	0.363	20.0	1.43 [1.24, 1.61]	−1.41 [−2.00, −0.81]
Human modified	2,549	0.256	24.1	1.41 [1.31, 1.51]	−1.01 [−1.39, −0.63]

For all three models, the median daily streamflow trend (in percentage) is the dependent variable and total water-year precipitation and ET_o trend (both in percentage) are the independent variables. All models and all individual regression coefficients have P < 0.001. CIs show considerable overlap between models, suggesting that a differential response to climate forcing is not evident.