This dataset brings together environnemental, ecological and sociological data used in the article "Knowledge influences perceptions and values of nature-based solutions: The example of soil and water bioengineering techniques applied to urban rivers in Auvergne Rhône-Alps region, in 2024. On one part, it describes 12 sites equipped with riverbank protection structures (green, gray or hybrid ) arranged along a vegetation gradient. The aims of the ecological tables is to understand the ecological value of green bank protection. The 12 sites were caracterized by environnement survey (table 1.2020_ouvrages.txt), bank soil characteristics survey (table 2.2020_transects.txt), and vegetation surveys (table 3.2020_releves.txt). A fourth table complete the table 3.2020_releves.txt : table4 .corr_espece.csv. This is a table of correspondance between the species acronym and the real name of the species from the Taxref data repository (Gargominy, O., 2014), and Baseflor database (Julve P, 1998) . It also gives the invasive status of each species surveyed, at national (Gargominy, O., 2014, V15) and regional levels (Debay,P., 2020) . On the second part, 2 other tables describes perception values using an online photo-questionnaire created with LimeSurvey software distributed between February and March 2021. This photo-questionnaire form is associated with the dataset.