Hydrelia
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|
| Frode Falkenberg | Vestland, Norway | 42 | 2 | 8 | 2020-06-28 |
| Even Mjaaland | Rogaland, Norway | 39 | 2 | 3 | 2017-07-22 |
| Ivar Stormo | Østfold, Norway | 32 | 2 | 3 | 2019-06-30 |
| Kjell Mjølsnes | Rogaland, Norway | 13 | 2 | 1 | 2017-06-24 |
| Leiv Tommas Haugen | Rogaland, Norway | 9 | 1 | 0 | 2016-06-08 |
| Alf Tore Mjøs | Rogaland, Norway | 7 | 2 | 5 | 2023-06-29 |
| John Skartveit | Vestland, Norway | 6 | 1 | 1 | 2022-07-01 |
| Trond Einar Brobakk | Trøndelag, Norway | 4 | 1 | 1 | 2012-06-30 |
| Øyvind Stickler | Vestfold, Norway | 4 | 2 | 5 | 2023-06-26 |
| Anders Lundberg | Vestland, Norway | 3 | 1 | 2 | 2018-06-10 |
| Pål Mølnvik | Trøndelag, Norway | 3 | 1 | 2 | 2013-06-19 |
| Eivind Nielsen | Rogaland, Norway | 3 | 2 | 0 | 2011-06-26 |
| Dag Øivind Ingierd | Akershus, Norway | 3 | 1 | 3 | 2011-07-04 |
| Egil Frantzen | Vestland, Norway | 2 | 1 | 1 | 2008-07-12 |
| Ola Moen | Vestland, Norway | 2 | 1 | 2 | 2015-08-17 |
| Kjell Tore Vogsland | Telemark, Norway | 2 | 2 | 2 | 2011-06-06 |
| Nils Rogn | Innlandet, Norway | 1 | 1 | 1 | 2014-06-16 |
| Olav Krogsæter | Vestland, Norway | 1 | 1 | 0 | 2009-06-07 |
| Geirr O Pedersen | Akershus, Norway | 1 | 1 | 1 | 2011-06-26 |
| Ole Terland | Vestland, Norway | 1 | 1 | 1 | 2018-06-09 |
| Rune Voie | Vestland, Norway | 1 | 1 | 0 | 2010-08-08 |
| Sveinung Sigbjørnsen | Vestland, Norway | 1 | 1 | 0 | 2018-06-02 |
| Lars-Henrik Jensen | Vestland, Norway | 1 | 1 | 2 | 2010-07-17 |
| Eli Gates | Akershus, Norway | 1 | 1 | 1 | 2018-05-31 |