Potential Groundwater Recharge Zones in New Zealand - GIS raster zip file

Map of the potential groundwater recharge zones across New Zealand (500m x 500m resolution), which can be used to identify areas of high nutrient leaching in zones where high groundwater recharge potential exists. Sources and Flows research identified potential groundwater recharge zones across New Zealand. Knowledge of groundwater recharge potential is required for sustainable groundwater management, including the assessment of vulnerability to contamination. The maps can be used to identify areas of high nutrient leaching in zones where high groundwater recharge potential exists (regions with large lakes and in the lower elevation plains). See also: https://ars.els-cdn.com/content/image/1-s2.0-S1674987118301488-gr4_lrg.jpg Groundwater recharge occurs when surface water moves downward to groundwater. Recharge is the main way that water enters an aquifer.
National data sets of lithology, slope, aspect, land use, soil drainage and drainage density were used to derive groundwater potential zones. The resulting map demonstrates that the potential is low in urban and mountainous areas, such as the Southern Alps, whereas the highest potential can be found in regions with large lakes and in the lower elevation plains areas. The map can be used to identify areas of high nutrient leaching in zones where high groundwater recharge potential exists.
The mapped zones agree well with the locations of aquifers in New Zealand and provide a quick nationwide overview of the groundwater recharge potential zones. The map can be used as an initial guide for nationwide assessment of sustainable management of groundwater resources. Furthermore, the map can be used to estimate vulnerable regions for pollution of groundwater, as highly rechargeable zones are most effective as transmitters of pollutants to groundwater.

新西兰潜在地下水补给区地图（500米×500米分辨率），可用于识别地下水补给潜力较高区域的高养分流失地带。来源与流动研究识别了新西兰的潜在地下水补给区。了解地下水补给潜力对于可持续的地下水管理至关重要，包括对污染脆弱性的评估。该地图可用于识别地下水补给潜力较高的区域（如大型湖泊地区和低海拔平原）的高养分流失地带。参见：https://ars.els-cdn.com/content/image/1-s2.0-S1674987118301488-gr4_lrg.jpg 地下水补给发生在地表水向下渗透至地下水的过程中。补给是水进入含水层的主要途径。利用岩石学、坡度、方位、土地利用、土壤排水和排水密度等国家级数据集，推导出地下水补给潜力区。生成的地图显示，该潜力在都市和山地地区（如南阿尔卑斯山脉）较低，而在大型湖泊地区和低海拔平原地区最高。该地图可用于识别地下水补给潜力较高的区域的高养分流失地带。绘制区域与新西兰含水层的位置相吻合，为全国范围内地下水补给潜力区的快速概览提供依据。该地图可作为全国范围内地下水资源可持续管理评估的初步指南。此外，该地图可用于估算地下水污染的脆弱区域，因为高度可补给区域作为污染物传递到地下水中的最有效介质。