Analysis of water quality in Miharu dam reservoir, Japan, using UAV data

This letter reports on the water quality conditions of the Miharu Dam Reservoir. The water quality conditions appear in near‐infrared (NIR) data collected by an unmanned aerial vehicle (UAV). Because blue‐green algae occur in summer, the water quality of the small lake will be significantly worse at that time. On the basis of the experimental results for data from the months of July and August obtained using a fuzzy regression model, it is found that the UAV data is useful in assessing the water quality conditions in Lake Sakurako, and that the NIR data is effective in estimating the water surface conditions of the lake, especially caused by the occurrence of blue‐green algae.