2022

Dry Season

2023

Wet Season

Distance km (miles)

δ15NAir (‰)

δ18OVSMOW (‰)

δ15NAir (‰)

δ18OVSMOW (‰)

Upstream

0

14.72

9.49

9.74

5.11

Tillman

5.07 (3.2)

13.92

3.48

9.79

−2.49

Tillman (lab duplicate)

N/A

14.03

3.69

9.7

−3.01

Sepulveda Basin

6.25 (3.9)

15.09

2.7

9.86

2.84