Quantifying monthly water balance to estimate water deficit in Mayurakshi River basin of Eastern India
| Autor: | Susanta Mahato, Deep Narayan Pandey, Swades Pal, Biplab Giri, Pawan Kumar Joshi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hydrology
Economics and Econometrics Geography Planning and Development 0211 other engineering and technologies 02 engineering and technology Groundwater recharge 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Water scarcity Water balance Evapotranspiration Environmental science 021108 energy Surface runoff Water content Water use Groundwater 0105 earth and related environmental sciences |
| Zdroj: | Environment, Development and Sustainability. 23:15986-16014 |
| ISSN: | 1573-2975 1387-585X |
| DOI: | 10.1007/s10668-021-01318-y |
| Popis: | Recorded seasonal variation and uneven distribution of rainfall is one of the major issues to the agrarian society and the domestic water users today. For strategic planning of water use, scientific estimation of water balance in different spatio-temporal scale is necessary. For this, the present paper intends to investigate monthly and annual water balance state of Mayurakshi River basin (including 45 sub-basins) using precipitation (P), runoff (Q), evapotranspiration (ET) and recharge/soil moisture. P, Q, ET, respectively, vary from 1625.97 mm to 2037.93 mm, 182.19 mm to 1503.15 mm and 1050 mm to 1500 mm for the entire basin. The monthly pattern shows significant variation attributed to strong seasonality of P and temperature (T). Monsoon months recorded heavy maximum P, Q and actual ET and on the other hand, all these are very poor during pre-monsoon season. Groundwater recharge annually differs spatially, but annual average recharge is 307mmwith main contribution in monsoon months. Water deficit condition prevails in pre-monsoon season; strong groundwater lowering and drying of top soil are some explicit evidences of the same. This seasonal water scarcity withstands against multi-cropping strategies of the agrarian communities. To cope with this emerging situation, pressure on groundwater is mounting but it is the fact that this resource is also highly limited and precious. Quantification of monthly water balance and water deficit will be inputs to the strategy development for sustainable water resource management. |
| Databáze: | OpenAIRE |
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