Genus: Microcystis
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Abbortjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-22 | |
| Akersvannet | Vestfold, Norway | 2 | 1 | 0 | 1989-09-15 | |
| Arkavatnet | Rogaland, Norway | 6 | 2 | 0 | 1994-09-12 | |
| Bergvikvatnet | Nordland, Norway | 3 | 1 | 0 | 1991-09-06 | |
| Bogstadvannet | Oslo, Norway | 1 | 1 | 0 | 1994-09-15 | |
| Borrevannet | Vestfold, Norway | 1 | 1 | 0 | 2003-05-19 | |
| Botnavatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Burudvann | Akershus, Norway | 2 | 1 | 0 | 1994-09-20 | |
| Dælivannet | Akershus, Norway | 2 | 2 | 0 | 1991-09-07 | |
| Elgtjern | Trøndelag, Norway | 3 | 2 | 0 | 1990-05-25 | |
| Frøylandsvatnet | Rogaland, Norway | 2 | 1 | 0 | 1993-09-29 | |
| Granavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1991-05-28 | |
| Gravdalsvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-18 | |
| Gullerudtjern | Buskerud, Norway | 3 | 2 | 0 | 1990-09-26 | |
| Hammervatnet | Trøndelag, Norway | 3 | 1 | 0 | 1994-10-15 | |
| Harestuvannet | Akershus, Norway | 2 | 1 | 0 | 2005-08-30 | |
| Haukvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-22 | |
| Hegglandsvatnet | Vestland, Norway | 1 | 1 | 0 | 1991-09-12 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-09-13 | |
| Holdalsvatn | Nordland, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Hostadvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Husavatnet | Vestland, Norway | 1 | 1 | 0 | 1991-09-17 | |
| Ibestadvatnet | Troms, Norway | 1 | 1 | 0 | 1989-10-10 | |
| Inndalsvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1994-05-02 | |
| Jarenvannet | Innlandet, Norway | 7 | 3 | 0 | 1996-09-18 | |
| Jåbekkvannet | Agder, Norway | 1 | 1 | 0 | 1991-09-16 | |
| Kjemsjøen | Innlandet, Norway | 3 | 1 | 0 | 1991-09-05 | |
| Klevatn | Nordland, Norway | 1 | 1 | 0 | 1993-09-07 | |
| Kolbjørnviksjøen | Østfold, Norway | 1 | 1 | 0 | 1991-09-05 | |
| Korssjøen | Vestfold, Norway | 2 | 1 | 0 | 1996-09-09 | |
| Kristianborgvannet | Vestland, Norway | 1 | 1 | 0 | 1991-06-04 | |
| Krussætertjern | Østfold, Norway | 2 | 2 | 0 | 1990-06-01 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Laupen | Innlandet, Norway | 5 | 2 | 0 | 1993-10-04 | |
| Lauvtjønna | Trøndelag, Norway | 4 | 2 | 0 | 1991-09-06 | |
| Liavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Ljøgodttjern | Akershus, Norway | 1 | 1 | 0 | 1993-08-30 | |
| Lysevatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-03-19 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1993-09-19 | |
| Molbekktjernet | Østfold, Norway | 1 | 1 | 0 | 1989-09-04 | |
| Mosvatnet | Rogaland, Norway | 6 | 1 | 0 | 1994-05-25 | |
| Nesttunvannet | Vestland, Norway | 1 | 1 | 0 | 1991-06-06 | |
| Nøklevann | Oslo, Norway | 2 | 2 | 0 | 1990-09-11 | |
| Oltervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Opsangervatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-25 | |
| Prestvatn | Agder, Norway | 1 | 1 | 0 | 1991-09-05 | |
| Reiarsvatnet | Rogaland, Norway | 3 | 1 | 0 | 1991-09-16 | |
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1991-09-17 | |
| Rundvannet | Troms, Norway | 4 | 1 | 0 | 1994-09-10 | |
| Røldalstjørnet | Vestland, Norway | 2 | 1 | 0 | 1993-06-08 | |
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