|Primary inflows||Scramogue River|
|Catchment area||3.96 km2 (1.5 sq mi)|
|Max. length||1.3 km (0.8 mi)|
|Max. width||0.7 km (0.4 mi)|
|Surface area||0.53 km2 (0.20 sq mi)|
|Max. depth||16 m (52 ft)|
|Surface elevation||46 m (151 ft)|
Fish species in Annaghmore Lough include perch, roach, rudd, pike, tench, three-spined stickleback and the critically endangered European eel. The fen on the lake's north shore is home to a snail species rare in Europe, Vertigo geyeri.
Annaghmore Lough is an important bird sanctuary. Threatened species present here include whooper swan and golden plover. Other species include teal, shoveler, wigeon, mallard, pochard, goldeneye, lapwing and curlew. The lake and surrounding fens form the Annaghmore Lough (Roscommon) Special Area of Conservation.
- Google (26 Feb 2016). "Annaghmore Lough" (Map). Google Maps. Google. Retrieved 26 Feb 2016.
- "A Reference Based Typology and Ecological Assessment System for Irish Lakes" (PDF). Environmental Protection Agency (Ireland). 2006. p. 16. Retrieved 26 Feb 2016.
- "Water Framework Directive Fish Stock Survey of Annaghmore Lough" (PDF). Inland Fisheries Ireland. Oct 2011. Retrieved 26 Feb 2016.
- "Annaghmore Lough (Roscommon) SAC" (PDF). National Parks and Wildlife Service (Ireland). Retrieved 26 Feb 2016.