Subtopic: Overview of groundwater recharge estimation and artificial recharge techniques
Question Statement:
A watershed of plan area $80.0\text{ km}^2$ has an unconfined aquifer with specific yield $S_y = 0.12$. Over the monsoon rainy season, the regional water table rose by an average height of $\Delta h = 2.5\text{ m}$. Using the Water Table Fluctuation (WTF) method ($V_R = \text{Area} \times S_y \times \Delta h$), the net groundwater recharge volume in million cubic metres ($\text{Mm}^3$) is ________ (answer in integer).