In addition to the spring and outlet of the Mengong River, 6 pedological pits are monitored for hydrogeochemistry parameters (see map above)
- F1 : situated at the upper part of the side hill slope
- F3 : situated at mid-slope
- FSP : situated at mid-slope and close to the main Mengong’s spring
- FRP : situated at the slope break (between hill and swamp)
- BFP : situated in the deep swamp zone (0.8 cm)
- BFS : situated in the shallow swamp zone (0.2-0.3 cm)