Each year the investigation is done twice, during spring and autum. The programme manual can be found here: http://www.b-s-p.org/home/guides/lg4/
The reports are entered here or sent to internationl Rivers programme coordinator: Søren Levring, firstname.lastname@example.org (since 2018)
Each year the summary will be done including all countries surveillance reports and posted on BSP's international website: http://www.b-s-p.org/home/
YOu may fill this observation report in teams that each will make one section but make sure the river and school name and date will be the same.
When you have filled in the survey make sure to send it by clicking on "Finish". Enjoy the nature!