Species: Hydroporus palustris
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Arkavatnet | Rogaland, Norway | 3 | 1 | 0 | 1991-09-12 | |
| Auklandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-10-30 | |
| Bergvikvatnet | Nordland, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Botnavatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-09-10 | |
| Buvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1991-08-27 | |
| Fetvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1992-09-21 | |
| Frøylandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1992-09-16 | |
| Granavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1997-09-04 | |
| Gravdalsvatnet | Vestland, Norway | 1 | 1 | 0 | 1990-09-25 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1992-09-16 | |
| Husavatnet | Vestland, Norway | 3 | 1 | 0 | 1992-09-18 | |
| Kolbjørnviksjøen | Østfold, Norway | 2 | 1 | 0 | 1991-05-28 | |
| Kristianborgvannet | Vestland, Norway | 1 | 1 | 0 | 1991-06-04 | |
| Kverndammen | Telemark, Norway | 1 | 1 | 0 | 1991-08-30 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Laksådalsvatnet | Nordland, Norway | 2 | 1 | 0 | 1992-06-21 | |
| Lianvatnet | Trøndelag, Norway | 2 | 1 | 0 | 1992-09-07 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-09-28 | |
| Moensvatnet | Vestland, Norway | 3 | 1 | 0 | 1997-10-06 | |
| Mosvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-09-10 | |
| Myravatnet | Vestland, Norway | 1 | 1 | 0 | 1990-09-10 | |
| Opsangervatnet | Vestland, Norway | 2 | 1 | 0 | 1990-09-26 | |
| Rossevatn | Rogaland, Norway | 3 | 1 | 0 | 1992-09-22 | |
| Seljebøvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1992-06-11 | |
| Skarvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1997-05-22 | |
| Skulbruvatn | Nordland, Norway | 1 | 1 | 0 | 1997-09-12 | |
| Spildervatnet | Nordland, Norway | 1 | 1 | 0 | 1992-05-25 | |
| Tornesvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-06-07 | |
| Tveitevannet | Vestland, Norway | 2 | 1 | 0 | 1990-05-30 | |
| Vikerauntjønna | Trøndelag, Norway | 3 | 1 | 0 | 1992-09-11 | |
| Øvre Storfjordvatnet | Nordland, Norway | 1 | 1 | 0 | 1990-08-30 | |
| Åstveitvannet | Vestland, Norway | 1 | 1 | 0 | 1989-09-07 | |