Ephemeroptera
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Hattlestadbekken | Møre og Romsdal, Norway | 17 | 3 | 0 | 1998-06-03 | |
| haugland | Vestland, Norway | 1 | 1 | 0 | 2006-05-04 | |
| Haukelandsvatnet | Vestland, Norway | 1 | 1 | 0 | 2004-10-14 | |
| Haukvatnet | Trøndelag, Norway | 1 | 1 | 0 | 2013-05-29 | |
| Haukvatnet | Trøndelag, Norway | 2 | 2 | 0 | 1989-09-22 | |
| Haukåselva | Vestland, Norway | 2 | 1 | 1 | 2011-11-23 | |
| Hauskjevatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Havågsvatnet | Møre og Romsdal, Norway | 5 | 3 | 0 | 1995-05-24 | |
| Heggedal | Akershus, Norway | 2 | 1 | 0 | 2014-10-13 | |
| Hellandsåna | Rogaland, Norway | 9 | 3 | 0 | 1995-05-23 | |
| Helsetvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 2005-08-23 | |
| Hestsjøen | Trøndelag, Norway | 4 | 1 | 0 | 2003-05-14 | |
| Hjortlandsstemma | Vestland, Norway | 2 | 1 | 0 | 2005-08-30 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 8 | 4 | 0 | 1993-06-11 | |
| Holmavatnet | Vestland, Norway | 1 | 1 | 0 | 2006-05-09 | |
| Holmavatnet | Vestland, Norway | 1 | 1 | 0 | 2006-05-09 | |
| Holterengabekken | Østfold, Norway | 3 | 3 | 0 | 1995-09-25 | |
| Holvikelva | Vestland, Norway | 1 | 1 | 0 | 1994-06-10 | |
| Homevannsbekken | Agder, Norway | 3 | 3 | 0 | 1993-10-27 | |
| Hostadvatnet | Møre og Romsdal, Norway | 3 | 3 | 0 | 1992-09-08 | |
| Hovedgården ungdomsskole | Akershus, Norway | 1 | 1 | 0 | 2014-10-13 | |
| Hovet | Telemark, Norway | 3 | 3 | 0 | 1993-10-05 | |
| Hovsdammen | Østfold, Norway | 3 | 1 | 0 | 1996-06-05 | |
| Hugla-elvo | Vestland, Norway | 12 | 3 | 0 | 1995-06-14 | |
| Hugubekken | Innlandet, Norway | 3 | 3 | 0 | 1993-10-11 | |
| Huldertjønna | Trøndelag, Norway | 2 | 1 | 0 | 2004-09-14 | |
| Husavatnet | Vestland, Norway | 8 | 3 | 0 | 1993-09-07 | |
| Hustredalsbekken | Vestland, Norway | 6 | 3 | 0 | 1995-06-01 | |
| Hølaløkka | Oslo, Norway | 1 | 1 | 0 | 2013-10-02 | |
| Høylandsåna | Rogaland, Norway | 3 | 3 | 0 | 1997-09-07 | |
| Håskjoldtjern | Møre og Romsdal, Norway | 2 | 2 | 0 | 1990-09-27 | |
| Ibestadvatnet | Troms, Norway | 3 | 3 | 0 | 1992-06-17 | |
| Iglevannet | Vestland, Norway | 1 | 1 | 0 | 2009-11-25 | |
| Illestadvatnet | Vestfold, Norway | 2 | 1 | 0 | 2001-05-23 | |
| Imetjønn | Agder, Norway | 2 | 2 | 0 | 1989-10-06 | |
| Ingersvatnet | Vestland, Norway | 1 | 1 | 0 | 2006-06-07 | |
| Innerstrøksneselva | Nordland, Norway | 3 | 3 | 0 | 1994-06-16 | |
| Isdammen | Innlandet, Norway | 1 | 1 | 0 | 2013-09-09 | |
| Jaren skole | Innlandet, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Jarenvannet | Innlandet, Norway | 4 | 1 | 0 | 1996-09-18 | |
| Jordfallbekken | Vestfold, Norway | 3 | 3 | 0 | 1994-06-10 | |
| Jørstadåna | Rogaland, Norway | 4 | 3 | 0 | 1996-05-03 | |
| Jåbekkvannet | Agder, Norway | 1 | 1 | 0 | 1993-09-27 | |
| Kaldbekken | Innlandet, Norway | 3 | 3 | 0 | 1993-10-11 | |
| Kampåa | Akershus, Norway | 14 | 3 | 0 | 1998-06-17 | |
| Karussen | Agder, Norway | 1 | 1 | 0 | 2014-10-22 | |
| Karusstjønn | Agder, Norway | 1 | 1 | 0 | 2013-08-21 | |
| Kjeldevatnet | Vestland, Norway | 1 | 1 | 0 | 2016-09-08 | |
| kjellsrudbekken | Innlandet, Norway | 1 | 1 | 0 | 2004-10-15 |