Relationships between net watershed inputs of N and P and export in storm drains (each symbol represents a watershed, but AHUG is excluded): P in runoff = 0.7 + 0.5 * net P inputs (P = 0.02, R2 = 0.80); P in baseflow = 9.7 + 0.2 * net P inputs (P = 0.15, R2 = 0.44); and total storm drain P export = 10.4 + 0.7 * net P inputs (P = 0.009, R2 = 0.85). Relationships were not significant for N. The dashed line indicates a 1:1 line, where net inputs = outputs.