Family: Tjernaksfamilien (Potamogetonaceae)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Akersvannet | Vestfold, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Apeltunvatnet | Vestland, Norway | 2 | 1 | 1 | 2017-06-07 | |
| Arkavatnet | Rogaland, Norway | 2 | 2 | 0 | 1989-08-28 | |
| Bergemsvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-10-11 | |
| Bogstadvannet | Oslo, Norway | 2 | 2 | 0 | 1993-06-10 | |
| Dælivannet | Akershus, Norway | 1 | 1 | 0 | 1989-08-04 | |
| Eikedokktjernet | Buskerud, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Elgtjern | Trøndelag, Norway | 2 | 2 | 0 | 1989-09-15 | |
| Fetvatnet | Møre og Romsdal, Norway | 2 | 2 | 0 | 1989-09-29 | |
| Frøylandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1992-10-05 | |
| Fæbydammen | Trøndelag, Norway | 2 | 2 | 0 | 2003-09-12 | |
| Gjerdsetvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 2001-08-30 | |
| Gjerstadvannet | Agder, Norway | 1 | 1 | 0 | 2005-11-10 | |
| Granavatnet | Trøndelag, Norway | 6 | 4 | 0 | 1997-09-04 | |
| Grindheimsvatnet | Agder, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Gårdsdam - Hvam vgs. | Akershus, Norway | 1 | 1 | 0 | 2000-06-07 | |
| Hammervatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-10-08 | |
| Harestuvannet | Akershus, Norway | 4 | 2 | 0 | 2004-09-01 | |
| Haukvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-05 | |
| Haukvatnet | Trøndelag, Norway | 1 | 1 | 0 | 2013-06-05 | |
| Helsetvatnet | Møre og Romsdal, Norway | 7 | 2 | 0 | 2009-05-28 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 2 | 2 | 0 | 1989-09-06 | |
| Hostadvatnet | Møre og Romsdal, Norway | 3 | 3 | 0 | 1992-09-08 | |
| Håskjoldtjern | Møre og Romsdal, Norway | 3 | 3 | 0 | 1994-11-23 | |
| Ibestadvatnet | Troms, Norway | 1 | 1 | 0 | 1989-10-10 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-29 | |
| Jåbekkvannet | Agder, Norway | 1 | 1 | 0 | 1991-06-11 | |
| Kjemsjøen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Kolbjørnviksjøen | Østfold, Norway | 2 | 1 | 0 | 1989-09-01 | |
| Kolbotnvannet | Akershus, Norway | 1 | 1 | 0 | 1990-09-25 | |
| Koltjønna | Trøndelag, Norway | 2 | 1 | 0 | 1991-08-28 | |
| Korssjøen | Vestfold, Norway | 5 | 3 | 0 | 1996-09-09 | |
| Kruktjønna | Trøndelag, Norway | 1 | 1 | 0 | 1991-08-28 | |
| Krussætertjern | Østfold, Norway | 1 | 1 | 0 | 2000-09-08 | |
| Kvitblikkvannet | Nordland, Norway | 11 | 4 | 0 | 1993-09-02 | |
| Langavatnet | Vestland, Norway | 2 | 2 | 0 | 1989-08-31 | |
| Laupen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Ledengstjern | Østfold, Norway | 3 | 3 | 0 | 1994-05-27 | |
| Lianvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-04 | |
| Liavatnet | Vestland, Norway | 1 | 1 | 0 | 1994-09-14 | |
| Liavatnet | Trøndelag, Norway | 2 | 2 | 0 | 1989-09-19 | |
| Lille luktvann | Nordland, Norway | 1 | 1 | 0 | 1991-09-25 | |
| Litjvatnet | Trøndelag, Norway | 2 | 2 | 0 | 2004-08-14 | |
| Litlevatn | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-09-07 | |
| Ljøgodttjern | Akershus, Norway | 2 | 2 | 0 | 1989-09-21 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Moensvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-11-07 | |
| Molbekktjernet | Østfold, Norway | 1 | 1 | 0 | 1989-09-04 | |
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