Genus: Spirogyra
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Granavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1990-05-28 | |
| Hammervatnet | Trøndelag, Norway | 1 | 1 | 0 | 1990-09-11 | |
| Harestuvannet | Akershus, Norway | 1 | 1 | 0 | 2005-08-30 | |
| Husavatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-28 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-29 | |
| Litlvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1989-10-04 | |
| Raudsjøen | Trøndelag, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Reinsvolldammen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Rørvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1991-06-14 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Sillongen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Skarvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Steglevannet | Buskerud, Norway | 1 | 1 | 0 | 1989-10-06 | |
| Trytetjønnet | Buskerud, Norway | 1 | 1 | 0 | 1989-09-08 | |
| Tveitevannet | Vestland, Norway | 2 | 1 | 0 | 1989-09-07 | |
| Vålåsjøen | Innlandet, Norway | 1 | 1 | 0 | 1989-08-24 | |
| Øvre Storfjordvatnet | Nordland, Norway | 3 | 1 | 0 | 1990-08-30 | |
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