PMID- 32852715 OWN - NLM STAT- MEDLINE DCOM- 20210107 LR - 20210107 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 28 IP - 2 DP - 2021 Jan TI - Planning rainwater conservation measures using geospatial and multi-criteria decision making tools. PG - 1734-1751 LID - 10.1007/s11356-020-10227-y [doi] AB - The assessment of rainwater-harvesting demand (RWHD) map and the identification of appropriate priority-based locations for rainwater-harvesting (RWH) and groundwater recharge structures are very crucial for the water managers, particularly in irrigation commands. This study addresses this challenge by using multi-criteria decision-making (MCDM) and geospatial techniques to present a novel and robust approach for generating RWHD map and identifying sites/zones for distinct RWH and groundwater recharge on a priority basis. Primary thematic layers such as existing irrigation water supply, irrigation demand, and groundwater potential were considered in this study for delineating RWHD zones. Further, sites suitable for RWH and groundwater recharge were identified using soil, slope, drainage network, and lineament thematic layers of the study area and they were prioritized. Four zones of rainwater demand were identified for the prioritization of RWH and groundwater structures: (a) "low" rainwater-harvesting demand zone (covering 3% of the total study area), (b) "moderate" rainwater-harvesting demand zone (40%), (c) "high" rainwater-harvesting demand zone (42%), and (d) "very high" rainwater-harvesting demand zone (15%). Moreover, 46 sites for check dams and 145 suitable sites for percolation tanks were identified, together with 253 ha area for groundwater recharge based on the priority of rainwater-harvesting demand. Integration of geospatial and MCDM techniques in conjunction with suitable thematic layers provides a helpful and realistic tool for large-scale planning and management of rainwater conservation measures. FAU - Singh, Laishram Kanta AU - Singh LK AUID- ORCID: 0000-0002-4340-9768 AD - AgFE Department, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India. kanta_lai@yahoo.co.in. FAU - Jha, Madan Kumar AU - Jha MK AD - AgFE Department, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India. FAU - Chowdary, V M AU - Chowdary VM AD - Regional Remote Sensing Centre-North, NRSC, Delhi, 110049, India. LA - eng PT - Journal Article DEP - 20200827 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Soil) SB - IM MH - Conservation of Natural Resources MH - Decision Making MH - *Groundwater MH - *Rain MH - Soil MH - Water Supply OTO - NOTNLM OT - Boolean logic OT - Geospatial techniques OT - Multi-criteria decision making (MCDM) OT - Rainwater conservation OT - Site prioritization EDAT- 2020/08/28 06:00 MHDA- 2021/01/08 06:00 CRDT- 2020/08/28 06:00 PHST- 2019/10/11 00:00 [received] PHST- 2020/07/20 00:00 [accepted] PHST- 2020/08/28 06:00 [pubmed] PHST- 2021/01/08 06:00 [medline] PHST- 2020/08/28 06:00 [entrez] AID - 10.1007/s11356-020-10227-y [pii] AID - 10.1007/s11356-020-10227-y [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2021 Jan;28(2):1734-1751. doi: 10.1007/s11356-020-10227-y. Epub 2020 Aug 27.