Water quality data collected by the Citizen-Led Environmental Observatory (CLEO) from multiple nearshore sites in Lake Lillinonah, Connecticut, USA, 2010-current

Included in this data package are water quality data from the Citizen-Led Environmental, a Observatory (CLEO) volunteer water quality monitoring program run by Friends of the Lake (FOTL) and Fairfield University at Lake Lillinonah, Connecticut, USA. The program has been operational since 2008 (data available 2010-current). Trained volunteer monitors collect data from dock locations across the lake on water temperature, Secchi disk depth, water color, presence of floating woody debris, recreation potential, trash, particle type and surface scum. Volunteers collect data between 3:00 and 7:00 PM three times per week from Memorial Day through Labor Day. In addition to the variables listed above, CLEO volunteers collect routine water samples on a biweekly basis, as well as any time there is a notable algal bloom. The routine samples are analyzed for nutrient (total nitrogen and total phosphorus) concentrations as well as concentrations of the cyanobacterial toxin microcystin. The blooms samples are analyzed for microcystin only. These data are available in EDI packages EDI568 (nutrients) and EDI569 (toxins).本数据包收录了由美国康涅狄格州利利诺纳湖（Lake Lillinonah）的“湖泊之友”（Friends of the Lake, FOTL）与费尔菲尔德大学（Fairfield University）运营的公民主导环境观测站（Citizen-Led Environmental Observatory, CLEO）志愿水质监测项目所产生的水质数据。该项目自2008年起正式运行，公开数据时段为2010年至今。经过专业培训的志愿监测人员会在阵亡将士纪念日至劳动节期间，于每周三次的下午3:00至7:00之间，在湖泊沿岸的码头点位采集数据，采集指标涵盖水温、塞氏盘透明度（Secchi disk depth）、水体颜色、漂浮木质碎屑存在情况、休闲使用潜力、垃圾状况、颗粒物类型以及表面浮渣。除上述监测指标外，CLEO的志愿监测人员还会每两周采集常规水样，且在出现显著藻华时同步采集应急水样。其中，常规水样会被检测总氮、总磷等营养盐浓度，以及蓝藻毒素微囊藻毒素（microcystin）浓度；藻华应急水样则仅针对微囊藻毒素开展检测。上述相关数据分别收录于数据包EDI568（营养盐数据集）与EDI569（毒素数据集）中。