Yosemite National Park - Monitoring Water Quality Collection Sites - Open Data

Monitoring water quality as it relates to potential visitor use impacts began in 2004 and focuses on the areas of heaviest visitation on the Tuolumne and Merced Wild and Scenic Rivers. Sample sites were located to capture changes to the respective river's water quality as it passed through an area and, as such, are generally upstream and downstream of use areas. Components of water quality evaluated at sites include the field parameters of water and air temperature, pH, dissolved oxygen, and specific conductivity as well as laboratory parameters such as total dissolved nitrogen, nitrate plus nitrite, total phosphorous, total dissolved phosphorous, E. coli, and total petroleum hydrocarbons. IRMA Data Store Reference本数据集针对与潜在游客使用影响相关的水质监测工作始于2004年，监测重点为图奥勒米河（Tuolumne）与默塞德河（Merced）野生风景河流的高游客到访区域。采样点位的布设旨在捕捉河流流经对应区域时的水质变化，因此这些点位通常设置在人类活动使用区域的上游与下游。各监测点位评估的水质指标包含两类：现场监测参数包括水温、气温、pH值、溶解氧及比电导率；实验室检测参数则包括总溶解氮、硝酸盐与亚硝酸盐总量、总磷、总溶解磷、大肠埃希氏菌（E. coli）及总石油烃。IRMA数据存储引用