| 就地處理 | In Situ Treatment |
| 感應補注 | Induced Recharge |
| 水井干擾 | Interference Of Well |
| 中間流 | Interflow |
| 地下水補注灌溉法 | Irrigation Method For Groundwater Recharge |
| 等向性 | Isotropic |
| 地層下陷 | Land Subsidence |
| 延遲沉陷 | Lag Subsidence |
| 滲漏 | Leakage |
| 滲漏含水層 | Leaky Aquifer |
| 土壤液化 | Liquefaction |
| 地層之不連續處 | Lithologic Discontinuities |
| 最大採水量 | Maximum Mining Yield |
| 最大可獲水量 | Maximum Sustained Yield |
| 自然整治 | Natural Attenuation |
| 天然河道法 | Natural Stream Channel Method |
| 非就地處理 | Non-In Situ Treatment |
| 非點源污染 | Non-Point Sources Pollution |
| 觀測井 | Observation Well |
| 地下水超抽 | Overdraft |