Ephemeroptera
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Kjemsjøen | Innlandet, Norway | 21 | 7 | 0 | 1995-06-06 | |
| Kjønndalsbekken | Vestfold, Norway | 46 | 3 | 0 | 1998-09-22 | |
| Kleivneset | Nordland, Norway | 1 | 1 | 0 | 2013-09-11 | |
| Klevatn | Nordland, Norway | 1 | 1 | 0 | 1993-09-06 | |
| Klokkarvatnet | Vestland, Norway | 1 | 1 | 0 | 2015-10-27 | |
| Kloppedalstjernet | Vestland, Norway | 1 | 1 | 0 | 2002-05-29 | |
| Knemsnekken | Buskerud, Norway | 3 | 1 | 0 | 1995-10-17 | |
| Kolbjørnviksjøen | Østfold, Norway | 15 | 6 | 0 | 1993-09-09 | |
| Kolbotnvannet | Akershus, Norway | 4 | 1 | 0 | 2000-05-26 | |
| Kolstadbekken | Østfold, Norway | 9 | 3 | 0 | 1996-04-30 | |
| Koltjønna | Trøndelag, Norway | 1 | 1 | 0 | 1991-05-28 | |
| Kongsmarka | Nordland, Norway | 1 | 1 | 0 | 2013-09-23 | |
| Korssjøen | Vestfold, Norway | 28 | 10 | 0 | 1996-09-09 | |
| Kristianborgvannet | Vestland, Norway | 2 | 2 | 0 | 2003-05-08 | |
| Kronstad | Vestland, Norway | 2 | 1 | 0 | 2015-05-12 | |
| Kruktjønna | Trøndelag, Norway | 2 | 2 | 0 | 1991-05-31 | |
| Krussætertjern | Østfold, Norway | 3 | 2 | 0 | 2000-09-08 | |
| Kråkdalbekken | Trøndelag, Norway | 2 | 2 | 0 | 1994-05-03 | |
| Kråkstad | Akershus, Norway | 2 | 1 | 0 | 2013-08-29 | |
| Kvasselvbakken | Rogaland, Norway | 1 | 1 | 0 | 2016-05-20 | |
| Kvassnesstemma | Vestland, Norway | 1 | 1 | 0 | 2001-09-17 | |
| Kvednabekken | Vestland, Norway | 3 | 3 | 0 | 1996-05-02 | |
| Kvernavatnet | Vestland, Norway | 1 | 1 | 0 | 2009-04-22 | |
| Kverndammen | Telemark, Norway | 6 | 4 | 0 | 1991-08-30 | |
| Kvitblikkvannet | Nordland, Norway | 18 | 12 | 0 | 1993-09-02 | |
| Kyvatnet | Trøndelag, Norway | 2 | 1 | 0 | 2002-09-26 | |
| Laglim | Innlandet, Norway | 3 | 1 | 0 | 2012-10-11 | |
| Landvikbekken | Agder, Norway | 3 | 2 | 0 | 1994-05-20 | |
| Landåsbekken | Vestland, Norway | 2 | 1 | 0 | 2011-09-09 | |
| Langavannets innførselselv | Vestland, Norway | 1 | 1 | 0 | 2006-05-23 | |
| Langavatnet | Vestland, Norway | 5 | 4 | 0 | 1991-10-25 | |
| Langbekken | Trøndelag, Norway | 16 | 3 | 0 | 1995-06-15 | |
| Langevann | Vestland, Norway | 1 | 1 | 0 | 2006-05-23 | |
| Langevannet | Vestland, Norway | 1 | 1 | 0 | 2004-10-27 | |
| Langvannet | Akershus, Norway | 11 | 1 | 0 | 2003-05-26 | |
| Langvannet | Akershus, Norway | 1 | 1 | 0 | 2002-05-23 | |
| Langvannet | Akershus, Norway | 3 | 1 | 0 | 2003-05-26 | |
| Lathusåsen | Akershus, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Laugen, Austadfjord | Trøndelag, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Laupen | Innlandet, Norway | 9 | 5 | 0 | 1993-10-04 | |
| Lauvtjønna | Trøndelag, Norway | 27 | 10 | 0 | 1995-10-02 | |
| Ledengstjern | Østfold, Norway | 5 | 4 | 0 | 1994-09-02 | |
| Legebekken | Rogaland, Norway | 5 | 3 | 0 | 1995-06-08 | |
| Lianvannet | Trøndelag, Norway | 2 | 1 | 0 | 2001-10-16 | |
| Lianvassbekken nedre del | Trøndelag, Norway | 1 | 1 | 0 | 2013-05-23 | |
| Lianvatnet | Trøndelag, Norway | 13 | 6 | 0 | 1995-09-12 | |
| Lianvatnet | Trøndelag, Norway | 2 | 1 | 0 | 2008-09-02 | |
| Liavannet | Vestland, Norway | 1 | 1 | 0 | 2015-06-19 | |
| Liavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Liavatnet | Vestland, Norway | 4 | 3 | 0 | 1994-09-14 |