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    The dataset contains records of the Dipper (Cinclus cinclus) (Aves) and other riparian birds collected in the Tinhela river (Tua sub-basin) and included in the Ecological Monitoring Program (2012-17) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in the spring of 2013, and in the and winter and spring of 2014-2016, during field visits to six count points located in the riverbed of the Tinhela river, both in the area affected by the dam, near the mouth, and upstream. All observations were made with binoculars and/or telescopes. These point counts aimed to replace the linear transects of the regular program for this species, whenever these could not be performed due to security or logistic reasons. Therefore, they were set in the initial point of the transect they replaced. A total of 40 observations of four species (including the Dipper) were recorded.