Phylum: Diatoms (Bacillariophyta)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Abbortjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-22 | |
| Akersvannet | Vestfold, Norway | 12 | 6 | 0 | 1994-09-20 | |
| Arkavatnet | Rogaland, Norway | 14 | 4 | 0 | 1994-09-12 | |
| Auklandsvatnet | Rogaland, Norway | 3 | 3 | 0 | 1989-09-15 | |
| Bergvikvatnet | Nordland, Norway | 18 | 8 | 0 | 1994-09-13 | |
| Bogstadvannet | Oslo, Norway | 9 | 4 | 0 | 1994-09-15 | |
| Borrevannet | Vestfold, Norway | 3 | 3 | 0 | 2003-05-19 | |
| Botnavatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-09-19 | |
| Bragdøya | Agder, Norway | 2 | 1 | 0 | 1994-06-09 | |
| Burudvann | Akershus, Norway | 7 | 5 | 0 | 1993-09-14 | |
| Buvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Drøbak | Akershus, Norway | 15 | 8 | 0 | 2016-09-21 | |
| Dælivannet | Akershus, Norway | 3 | 3 | 0 | 1991-09-07 | |
| Eidsvatnet | Møre og Romsdal, Norway | 8 | 4 | 0 | 1990-09-12 | |
| Elgtjern | Trøndelag, Norway | 7 | 4 | 0 | 1990-05-25 | |
| Elingaardskilen | Østfold, Norway | 1 | 1 | 0 | 1994-09-29 | |
| Englan | Nordland, Norway | 4 | 1 | 0 | 1997-04-11 | |
| Erlevegen 37 | Agder, Norway | 1 | 1 | 0 | 1991-05-29 | |
| Espegrend | Vestland, Norway | 5 | 2 | 0 | 2002-02-18 | |
| Fetvatnet | Møre og Romsdal, Norway | 5 | 3 | 0 | 1990-09-18 | |
| Floen | Vestland, Norway | 7 | 4 | 0 | 1993-10-04 | |
| Fløyta | Akershus, Norway | 5 | 4 | 0 | 1990-06-07 | |
| Frøylandsvatnet | Rogaland, Norway | 31 | 8 | 0 | 1994-09-28 | |
| Granavatnet | Trøndelag, Norway | 8 | 3 | 0 | 1991-05-28 | |
| Gravdalsvatnet | Vestland, Norway | 4 | 4 | 0 | 1989-09-18 | |
| Grindheimsvatnet | Agder, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Gullerudtjern | Buskerud, Norway | 8 | 5 | 0 | 1991-06-06 | |
| Gåstjønna | Nordland, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Halten | Trøndelag, Norway | 1 | 1 | 0 | 1994-06-03 | |
| Hamar | Innlandet, Norway | 1 | 1 | 0 | 2010-08-27 | |
| Hammervatnet | Trøndelag, Norway | 39 | 11 | 0 | 1996-10-17 | |
| Harestuvannet | Akershus, Norway | 14 | 5 | 0 | 2005-08-30 | |
| Haukvatnet | Trøndelag, Norway | 2 | 2 | 0 | 1989-09-22 | |
| Hauskjevatnet | Rogaland, Norway | 7 | 3 | 0 | 1990-09-26 | |
| Hegglandsvatnet | Vestland, Norway | 5 | 4 | 0 | 1993-06-02 | |
| Helgeroafjorden | Vestfold, Norway | 1 | 1 | 0 | 1993-12-08 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 14 | 4 | 0 | 1991-10-23 | |
| Holdalsvatn | Nordland, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Hostadvatnet | Møre og Romsdal, Norway | 11 | 7 | 0 | 1993-06-16 | |
| Husavatnet | Vestland, Norway | 13 | 5 | 0 | 1991-09-17 | |
| Håskjoldtjern | Møre og Romsdal, Norway | 3 | 2 | 0 | 1994-09-21 | |
| Ibestadvatnet | Troms, Norway | 4 | 3 | 0 | 1990-09-11 | |
| Indre vågetjønn | Vestland, Norway | 1 | 1 | 0 | 1994-08-26 | |
| Inndalsvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1994-05-02 | |
| Jarenvannet | Innlandet, Norway | 18 | 6 | 0 | 1996-09-18 | |
| Jåbekkvannet | Agder, Norway | 3 | 2 | 0 | 1993-09-27 | |
| Kjemsjøen | Innlandet, Norway | 12 | 5 | 0 | 1994-06-13 | |
| Klevatn | Nordland, Norway | 3 | 3 | 0 | 1993-09-07 | |
| Knurrvatnet | Nordland, Norway | 2 | 2 | 0 | 1989-08-30 | |
| Kolbjørnviksjøen | Østfold, Norway | 14 | 5 | 0 | 1991-09-05 | |
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