Your search found 3 records
1 Pavelic, Paul; Hoanh, Chu Thai; Viossanges, Mathieu; Vinh, B. N.; Chung, D. T.; D’haeze, D.; Dat, L. Q.; Ross, A. 2019. Managed aquifer recharge for sustaining groundwater supplies for smallholder coffee production in the central highlands of Vietnam: report on pilot trial design and results from two hydrological years (May 2017 to April 2019). Contribution to WLE project - Sustainable Groundwater. Colombo, Sri Lanka: International Water Management Institute (IWMI). 68p.
Groundwater recharge ; Aquifers ; Sustainability ; Water supply ; Agricultural production ; Coffee industry ; Highlands ; Groundwater table ; Water quality ; Cost benefit analysis ; Smallholders ; Farmers' attitudes ; Hydroclimatology ; Rain ; Wells ; Monitoring ; Filtration ; Modelling / Vietnam
(Location: IWMI HQ Call no: e-copy only Record No: H049492)
(2.77 MB) (2.77 MB)
2 Viossanges, Mathieu; Pavelic, Paul; Hoanh, Chu Thai; Vinh, B. N.; Chung, D. T.; D’haeze, D.; Dat, L. Q. 2019. Linkages between irrigation practices and groundwater availability: evidence from the Krong Buk Micro-Catchment, Dak Lak - Vietnam. Contribution to WLE project - Sustainable Groundwater. Final technical report. Colombo, Sri Lanka: International Water Management Institute (IWMI). 65p.
Groundwater assessment ; Water availability ; Irrigation practices ; Irrigation methods ; Sprinkler irrigation ; Basin irrigation ; Catchment areas ; Water resources ; Agricultural practices ; Irrigation efficiency ; Aquifers ; Groundwater table ; Water levels ; Water balance ; Pumping ; Water extraction ; Stream flow ; Groundwater recharge ; Forecasting ; Land use ; Soil moisture ; Farmers ; Techniques / Vietnam / Dak Lak / Krong Buk Micro-Catchment
(Location: IWMI HQ Call no: e-copy only Record No: H049493)
(5.22 MB) (5.22 MB)
3 Pavelic, Paul; Hoanh, Chu Thai; D’haeze, D.; Vinh, B. N.; Viossanges, Mathieu; Chung, D. T.; Dat, L. Q.; Ross, A. 2022. Evaluation of managed aquifer recharge in the Central Highlands of Vietnam. Journal of Hydrology: Regional Studies, 44:101257. [doi: https://doi.org/10.1016/j.ejrh.2022.101257]
Aquifers ; Groundwater recharge ; Groundwater management ; Highlands ; Climate resilience ; Groundwater level ; Rain ; Runoff ; Water quality ; Monitoring ; Water storage ; Irrigation water ; Pilot projects ; Farmers' attitudes / South East Asia / Vietnam / Dak Lak / Krong Buk
(Location: IWMI HQ Call no: e-copy only Record No: H051505)
https://www.sciencedirect.com/science/article/pii/S2214581822002701/pdfft?md5=ae17cef0a645b5ec39430f2c3407c1e6&pid=1-s2.0-S2214581822002701-main.pdf
https://vlibrary.iwmi.org/pdf/H051505.pdf
https://vlibrary.iwmi.org/pdf/H051505.pdf
(7.11 MB) (7.11 MB)
Study region: Dak Lak province in the Central Highlands of Vietnam
Study focus: Intensification of agriculture has resulted in unsustainably high levels of groundwater use in the Central Highlands. High monsoonal rainfall provides opportunities to boost groundwater storage through managed aquifer recharge (MAR), yet experience with MAR in the region is absent. In response, five farm-scale pilots were implemented in collaboration with local farmers whereby runoff from roofs and fields was recharged into shallow dug wells. The pilots were closely monitored over three years.
New hydrological insights for the region: MAR pilots exhibited large contrasts in performance, with volumes recharged ranging from 5 to 530 m3 per year. Pilot sites with cleaner roof runoff water performed best, whilst those using more turbid water from unpaved roads performed worst. Water quality analyses did not identify parameters of major concern for irrigation. Field data and modelling indicate that the size of the recharge water plumes are small relative to the high groundwater velocities making the recharge water difficult to recover from the recharge well in this setting. Water is however contained locally, providing potential for improved water availability within the local area. Farmer attitudes towards MAR vary in response to the technical performance and a range of socioeconomic factors. These findings may provide insights for researchers or practitioners from other regions where groundwater dependence is high but experience in MAR is lacking.
Study focus: Intensification of agriculture has resulted in unsustainably high levels of groundwater use in the Central Highlands. High monsoonal rainfall provides opportunities to boost groundwater storage through managed aquifer recharge (MAR), yet experience with MAR in the region is absent. In response, five farm-scale pilots were implemented in collaboration with local farmers whereby runoff from roofs and fields was recharged into shallow dug wells. The pilots were closely monitored over three years.
New hydrological insights for the region: MAR pilots exhibited large contrasts in performance, with volumes recharged ranging from 5 to 530 m3 per year. Pilot sites with cleaner roof runoff water performed best, whilst those using more turbid water from unpaved roads performed worst. Water quality analyses did not identify parameters of major concern for irrigation. Field data and modelling indicate that the size of the recharge water plumes are small relative to the high groundwater velocities making the recharge water difficult to recover from the recharge well in this setting. Water is however contained locally, providing potential for improved water availability within the local area. Farmer attitudes towards MAR vary in response to the technical performance and a range of socioeconomic factors. These findings may provide insights for researchers or practitioners from other regions where groundwater dependence is high but experience in MAR is lacking.
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