| Project | Visits | Observations | Individuals * |
|---|---|---|---|
| AMF-LW-2005: Losse waarnemingen 2005 | 2 | 5 | 5 |
| F&F.2009.01.EEM.BureauWaardenburg: Toestand- en Trendmonitoring in rivier de Eem | 1 | 4 | 33 |
| LosWrn.2010: Losse waarnemingen 2010 | 1 | 1 | 1 |
| Employee | Visits | Observations | Individuals * |
|---|---|---|---|
| Erik van Beers | 2 | 5 | 34 |
| Niels de Zwarte | 2 | 5 | 5 |
| Number of sightings | 10 |
|---|---|
| Number of visits | 10 |
| Number of individuals * | 39 |