| Stokkedammen | Trøndelag, Norway | 3 | 1 | 0 | 2017-08-29 | |
| Storavatnet | Vestland, Norway | 8 | 8 | 0 | 1991-10-20 | |
| Stordammen | Akershus, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Store Bjørnevatnet | Agder, Norway | 5 | 5 | 0 | 1989-08-30 | |
| Storeidvatnet | Nordland, Norway | 1 | 1 | 0 | 1998-09-07 | |
| Storelva | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-09-13 | |
| Storelva skole | Troms, Norway | 1 | 1 | 0 | 2013-09-06 | |
| Storetjørna | Vestland, Norway | 1 | 1 | 0 | 1998-05-20 | |
| Storsteinen, Jurdalen, Napp | Nordland, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Stortjønna Andås | Nordland, Norway | 1 | 1 | 0 | 2013-09-12 | |
| Storvannet | Nordland, Norway | 2 | 2 | 0 | 1990-09-07 | |
| Storvatnet | Trøndelag, Norway | 1 | 1 | 0 | 2004-08-14 | |
| Storåna | Rogaland, Norway | 1 | 1 | 0 | 1997-09-08 | |
| Strupen, Halsa | Nordland, Norway | 1 | 1 | 0 | 2013-09-26 | |
| Svanevatnet | Rogaland, Norway | 4 | 3 | 0 | 1993-05-26 | |
| Svartaholtjørnet | Vestland, Norway | 26 | 16 | 0 | 1996-09-17 | |
| Svartputten | Oslo, Norway | 1 | 1 | 0 | 2003-06-06 | |
| Svartåstjern | Buskerud, Norway | 2 | 2 | 0 | 1993-06-03 | |
| Svenåa | Akershus, Norway | 2 | 1 | 0 | 1997-05-28 | |
| Svinna | Østfold, Norway | 1 | 1 | 0 | 1994-06-24 | |
| Sætre skole | Akershus, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Sævelibekken | Agder, Norway | 4 | 1 | 0 | 1994-10-24 | |
| Søndre Aas gård, Holmlia | Oslo, Norway | 1 | 1 | 0 | 2013-06-17 | |
| Søre Osen | Innlandet, Norway | 1 | 1 | 0 | 2008-06-13 | |
| Takseråsdal | Agder, Norway | 1 | 1 | 0 | 2013-09-18 | |
| Tangane | Telemark, Norway | 1 | 1 | 0 | 2013-09-20 | |
| Tinnhølen | Vestland, Norway | 1 | 1 | 2 | 2008-06-22 | |
| Tjedn ved Belgjinøse på Slettefjellet | Innlandet, Norway | 2 | 1 | 0 | 2013-09-03 | |
| Tjødnet ved ungdomsskulen | Vestland, Norway | 1 | 1 | 0 | 2006-06-09 | |
| Tjønnmoen | Innlandet, Norway | 2 | 1 | 0 | 2013-09-23 | |
| Tjønnmostua | Innlandet, Norway | 2 | 1 | 0 | 2013-09-23 | |
| Tjøtta | Nordland, Norway | 1 | 1 | 0 | 2013-10-01 | |
| Tornesvatnet | Rogaland, Norway | 22 | 18 | 0 | 1991-09-13 | |
| Torstaddammen | Akershus, Norway | 1 | 1 | 0 | 2013-09-11 | |
| Torvikelva | Møre og Romsdal, Norway | 3 | 1 | 0 | 1994-11-09 | |
| Tretjønnet | Agder, Norway | 5 | 5 | 0 | 1989-09-27 | |
| Trytetjønnet | Buskerud, Norway | 1 | 1 | 0 | 1989-09-08 | |
| Tussebekken | Akershus, Norway | 2 | 1 | 0 | 1994-09-05 | |
| Tussvatnet | Nordland, Norway | 6 | 6 | 0 | 1990-06-07 | |
| Tveitavatnet | Vestland, Norway | 9 | 8 | 0 | 1991-05-23 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 0 | 2016-06-01 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 0 | 2008-09-04 | |
| Tveitevannet | Vestland, Norway | 6 | 5 | 0 | 1990-08-28 | |
| Tverrbekken | Innlandet, Norway | 4 | 1 | 0 | 1997-09-18 | |
| Tysseelva | Vestland, Norway | 4 | 1 | 0 | 1997-09-18 | |
| Unnebergbekken | Østfold, Norway | 9 | 1 | 0 | 1996-09-16 | |
| Utistubekken | Trøndelag, Norway | 3 | 1 | 0 | 1994-06-08 | |
| Utnehagen | Vestland, Norway | 1 | 1 | 1 | 2015-11-08 | |
| Vassbotnen | Møre og Romsdal, Norway | 1 | 1 | 0 | 2013-09-25 | |
| Vasslivatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-10-04 | |
Sustain.no is provided by the Norwegian Centre for Science Education