Peru Watershed Data for the Arequipa Region

Surface water quality has been monitored in southern Peru for over a century, but the information is only available from various organizations with considerable delay after official requests. A substantial portion of the data have not been quality assured and were available in difficult-to-access formats such as scanned PDF documents, which made it difficult to evaluate water quality trends. In this project, we gathered all available surface water quality information from five watersheds in the Arequipa Region of southern Peru: Camaná, Chili, Ocoña, Tambo, and Yauca. The effort required entry of more than 130 thousand records of general chemistry, nutrients, and parameters, metals, organic compounds, and biological taxa from 276 stations. The water quality records span the years 2012 to 2021 for most data, but Chili does include data starting from 1905. This paper describes how the water quality data were assimilated and provides one master Excel database so that the surface water quality data can be used for research and decision making.

秘鲁南部的地表水水质监测工作已开展逾百年，但相关水质信息仅能在提交官方申请后，由各机构延迟较长时间方可对外提供。其中大量数据未经过质量审核，且以难以获取的格式存储，例如扫描版PDF文档，这极大增加了水质变化趋势评估的难度。本项目收集了秘鲁南部阿雷基帕大区（Arequipa Region）五个流域的全部可获取地表水水质资料，分别为卡马纳（Camaná）、奇利（Chili）、奥科尼亚（Ocoña）、坦博（Tambo）以及亚乌卡（Yauca）。本次数据整合工作共录入了来自276个监测站点的13万余条记录，涵盖常规化学指标、营养盐、金属参数、有机化合物及生物类群等多类数据。多数水质记录的时间跨度为2012年至2021年，不过奇利流域的数据可追溯至1905年。本文详细介绍了该地表水水质数据的整合流程，并提供了一份主Excel数据库，以供相关研究与决策制定使用。