| Jåbekkvannet | Agder, Norway | 1 | 1 | 0 | 1991-09-16 | |
| Kai ved Vitensenteret i Arendal | Agder, Norway | 3 | 3 | 3 | 2013-03-20 | |
| Karlsfjæra | Vestland, Norway | 3 | 1 | 3 | 2014-10-01 | |
| Kjeldevatnet | Vestland, Norway | 3 | 1 | 0 | 2024-04-30 | |
| Kjemsjøen | Innlandet, Norway | 18 | 13 | 0 | 1993-09-02 | |
| Klevatn | Nordland, Norway | 7 | 7 | 0 | 1993-09-07 | |
| Kloster Halsnøy | Vestland, Norway | 1 | 1 | 0 | 2019-05-23 | |
| Knurrvatnet | Nordland, Norway | 2 | 2 | 0 | 1989-08-30 | |
| Kolbjørnviksjøen | Østfold, Norway | 14 | 9 | 0 | 1991-09-05 | |
| Kolbotnvannet | Akershus, Norway | 25 | 15 | 0 | 1991-06-03 | |
| Koltjønna | Trøndelag, Norway | 4 | 4 | 0 | 1994-06-02 | |
| Korssjøen | Vestfold, Norway | 32 | 21 | 0 | 1996-09-09 | |
| Korsvik | Vestfold, Norway | 4 | 2 | 0 | 2014-09-01 | |
| Korsvik | Vestfold, Norway | 2 | 2 | 0 | 2001-05-31 | |
| Korsvika | Trøndelag, Norway | 6 | 3 | 4 | 2021-09-09 | |
| Kristianborgvannet | Vestland, Norway | 4 | 4 | 0 | 1991-06-04 | |
| Kruktjønna | Trøndelag, Norway | 10 | 8 | 0 | 1991-08-28 | |
| Krussætertjern | Østfold, Norway | 2 | 1 | 0 | 1990-06-01 | |
| Kvaløysletta | Troms, Norway | 2 | 1 | 1 | 2019-09-20 | |
| Kverndammen | Telemark, Norway | 13 | 10 | 0 | 1991-08-29 | |
| Kvitblikkvannet | Nordland, Norway | 8 | 8 | 0 | 1991-09-25 | |
| Kyrkjevika, Skjold | Rogaland, Norway | 4 | 1 | 1 | 2016-09-12 | |
| Kårtveitpollen | Vestland, Norway | 4 | 2 | 1 | 2015-09-02 | |
| Kårtveitpollen | Vestland, Norway | 1 | 1 | 1 | 2014-09-24 | |
| Kårvåg | Møre og Romsdal, Norway | 1 | 1 | 0 | 2019-06-11 | |
| Laksådalsvatnet | Nordland, Norway | 10 | 7 | 0 | 1991-06-05 | |
| Lamøya | Vestfold, Norway | 2 | 2 | 0 | 1997-09-23 | |
| Landsvik | Vestland, Norway | 2 | 2 | 0 | 2015-10-04 | |
| Langavatnet | Vestland, Norway | 11 | 10 | 0 | 1991-10-25 | |
| Laupen | Innlandet, Norway | 24 | 18 | 0 | 1993-10-04 | |
| Lauvtjønna | Trøndelag, Norway | 36 | 22 | 0 | 1994-09-12 | |
| Lianvatnet | Trøndelag, Norway | 13 | 9 | 0 | 1990-10-17 | |
| Lianvatnet | Trøndelag, Norway | 3 | 1 | 0 | 2008-09-10 | |
| Liavatnet | Vestland, Norway | 1 | 1 | 0 | 1994-06-06 | |
| Liavatnet | Trøndelag, Norway | 8 | 8 | 0 | 1989-09-19 | |
| Likvik, Skjold | Rogaland, Norway | 1 | 1 | 1 | 2018-08-28 | |
| Lille Groos | Agder, Norway | 1 | 1 | 1 | 2013-05-13 | |
| Litlevatn | Møre og Romsdal, Norway | 11 | 10 | 0 | 1994-09-07 | |
| Litlvatnet | Trøndelag, Norway | 16 | 13 | 0 | 1996-09-06 | |
| Ljøgodttjern | Akershus, Norway | 17 | 13 | 0 | 1993-08-30 | |
| Longvatnet | Rogaland, Norway | 8 | 7 | 0 | 1990-09-28 | |
| Lund-Klungset | Nordland, Norway | 1 | 1 | 0 | 2014-05-29 | |
| Madsvannet | Nordland, Norway | 2 | 1 | 0 | 1990-09-22 | |
| Maltjern | Akershus, Norway | 5 | 3 | 0 | 1991-06-12 | |
| Mariholmen | Vestland, Norway | 2 | 2 | 0 | 2006-09-28 | |
| Marinbiologisk stasjon, Espegrend | Vestland, Norway | 1 | 1 | 0 | 2016-10-20 | |
| Melkeviken | Vestland, Norway | 12 | 3 | 0 | 2018-06-14 | |
| mellom leangenbokta og rotvoll | Trøndelag, Norway | 2 | 2 | 0 | 2019-08-23 | |
| Midsjøvannet | Akershus, Norway | 12 | 10 | 0 | 1993-09-19 | |
| Mjøsa | Innlandet, Norway | 14 | 1 | 0 | 2015-06-08 | |
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