| Lilleeid 32 | Nordland, Norway | 1 | 1 | 0 | 2016-02-06 | |
| Lillefjord | Finnmark, Norway | 1 | 1 | 0 | 2022-02-05 | |
| Lillestrøm | Akershus, Norway | 1 | 1 | 0 | 2024-01-28 | |
| lilletorgnes | Nordland, Norway | 6 | 1 | 0 | 2021-01-21 | |
| Lillevatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 2011-01-31 | |
| Lillevatnet, Spjelkavik | Møre og Romsdal, Norway | 1 | 1 | 0 | 2018-01-27 | |
| Linehagen | Rogaland, Norway | 1 | 1 | 0 | 2010-01-31 | |
| Linnerud, Totenvegen 1606 | Innlandet, Norway | 1 | 1 | 0 | 2022-02-03 | |
| Litlevatn | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-09-07 | |
| Ljanselva miljøpark Skulleruddumpa | Oslo, Norway | 1 | 1 | 0 | 2022-10-14 | |
| Loen | Vestland, Norway | 1 | 1 | 0 | 2010-01-31 | |
| Lone - Espeland - Haukeland | Vestland, Norway | 1 | 1 | 0 | 2017-01-24 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-06-01 | |
| Lundarvatnet | Vestland, Norway | 1 | 1 | 0 | 2007-03-25 | |
| Lundarvatnet | Vestland, Norway | 1 | 1 | 0 | 1994-11-24 | |
| Lunde | Vestland, Norway | 1 | 1 | 0 | 2006-04-23 | |
| Lundebyfloa | Østfold, Norway | 1 | 1 | 0 | 2009-05-06 | |
| Lundenes | Troms, Norway | 1 | 1 | 0 | 2019-01-23 | |
| Lundestadveien 170, Grålum | Østfold, Norway | 1 | 1 | 0 | 2021-02-01 | |
| Lundsfjorden | Innlandet, Norway | 3 | 1 | 0 | 2024-04-08 | |
| Lundveien 2336 | Rogaland, Norway | 3 | 1 | 0 | 2023-01-30 | |
| Lundveien 2336 | Rogaland, Norway | 1 | 1 | 0 | 2022-02-02 | |
| Lungegårdsvannet | Vestland, Norway | 2 | 1 | 1 | 2021-08-26 | |
| Lurastø / Luravika | Rogaland, Norway | 1 | 1 | 0 | 2023-02-05 | |
| Lurastø / Luravika | Rogaland, Norway | 1 | 1 | 0 | 2023-02-05 | |
| Luravika / Lurastø | Rogaland, Norway | 1 | 1 | 0 | 2023-02-05 | |
| Lygre | Rogaland, Norway | 3 | 1 | 0 | 2023-01-28 | |
| Lynghaug skole | Vestland, Norway | 3 | 1 | 0 | 2021-05-10 | |
| Lynghaugtjernet, Fyllingsdalen | Vestland, Norway | 3 | 2 | 0 | 2020-01-26 | |
| Lysakerelven | Akershus, Norway | 3 | 1 | 0 | 2023-02-13 | |
| Lyseklostervegen 500 | Vestland, Norway | 5 | 1 | 0 | 2024-01-28 | |
| Løkkeveien 2 | Buskerud, Norway | 1 | 1 | 0 | 2012-01-23 | |
| Løland | Agder, Norway | 1 | 1 | 0 | 2022-05-04 | |
| Lønsetbakken | Møre og Romsdal, Norway | 1 | 1 | 0 | 2011-02-08 | |
| Løvåsveien 30,4380 Hauge i dalane | Rogaland, Norway | 1 | 1 | 0 | 2022-01-31 | |
| Lågen elv | Innlandet, Norway | 1 | 1 | 0 | 2024-04-01 | |
| Låte | Vestland, Norway | 1 | 1 | 0 | 2014-04-23 | |
| Låtevatnet | Vestland, Norway | 1 | 1 | 0 | 2007-04-04 | |
| Låvanveien 56 | Troms, Norway | 1 | 1 | 0 | 2024-01-28 | |
| Madsvannet | Nordland, Norway | 1 | 1 | 0 | 1994-11-24 | |
| Malmøya | Oslo, Norway | 2 | 1 | 0 | 2022-02-01 | |
| Maltjern | Akershus, Norway | 2 | 1 | 0 | 1992-06-23 | |
| Mandalselva | Agder, Norway | 1 | 1 | 0 | 2010-01-31 | |
| Manger | Vestland, Norway | 1 | 1 | 0 | 2006-05-10 | |
| Mannavatnet | Vestland, Norway | 1 | 1 | 0 | 2015-02-22 | |
| Marinbiologisk stasjon, Espegrend | Vestland, Norway | 1 | 1 | 0 | 2016-10-20 | |
| Marineholmen | Vestland, Norway | 1 | 1 | 0 | 2021-01-30 | |
| mauren | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-01-25 | |
| Melandselva | Trøndelag, Norway | 1 | 1 | 0 | 2010-04-02 | |
| Meling | Vestland, Norway | 1 | 1 | 0 | 2005-02-12 | |