Water surface images of Willow Creek Reservoir in Heppner, Oregon (2015 and 2016)

A camera was deployed to monitor cyanobacterial surface blooms occurring in Willow Creek Reservoir in Heppner, Oregon. The camera was positioned above the water and facing downwards to achieve the desired contrast in colors. With the appropriate permissions from USACE, the camera was attached to a railing of the Willow Creek Dam in the northwest corner of the reservoir about 70 feet above the surface of the water. The system was powered by a solar panel and large battery. The camera was programmed to take a series of 5 pictures from different angles every 15 minutes during daylight hours. During 2015, the camera was installed on May 14 and retrieved on November 9. A polarizing lens specific to the Axis 214 camera was tested from May 2015 to July 2015. The camera was installed at the same location on July 20, 2016 and was retrieved November 22, 2016. During 2016, the images were telemetered to a website. This dataset contains images of the surface of the water taken from the dam in the northwest corner of Willow Creek Reservoir. When the camera was fully functional, images were taken at 5 positions every 15 minutes during daylight hours. All images were checked for quality control before they were archived on this site. Photos that were dark (evening or early morning), blurry (taken when the camera was in motion), or obscured by glare were deleted from the dataset.本数据集布设了一台相机，用于监测美国俄勒冈州赫普纳市威洛溪水库（Willow Creek Reservoir）内的表层蓝藻水华（cyanobacterial surface blooms）。相机架设于水面上方并朝下拍摄，以获取理想的色彩对比度。经美国陆军工程兵团（USACE）许可后，相机被安装于水库西北角威洛溪大坝的栏杆上，距水面高度约70英尺。该采集系统由太阳能板与大容量蓄电池供电。相机预设为在日间每15分钟从不同角度拍摄5张照片。2015年，相机于5月14日布设完成，同年11月9日被回收。2015年5月至7月期间，针对Axis 214型号相机的专用偏振滤镜开展了测试。2016年7月20日，相机被重新安装至同一位置，并于2016年11月22日回收。2016年期间，拍摄得到的图像通过遥测技术传输至指定网站。本数据集包含从威洛溪水库西北角大坝拍摄的水面表层图像。当相机正常运行时，日间每15分钟会在5个不同拍摄位置采集图像。所有图像在归档至本平台前均经过质量管控检查。暗度过高（夜间或清晨拍摄）、模糊（相机移动时拍摄）或受眩光遮挡的照片已从数据集中移除。