Islands The lakes contain many small
islands and
peninsulas, which are also called "islands" because of the highly convoluted shoreline and because many of them were islands prior to two extensive drainage schemes in the 1880s and the 1950s which dropped the water level by about 5 feet (1.5 metres). The
Parliamentary Gazetteer of 1846 stated, "The islands are popularly fabled to be as numerous as the days of the year; but they have been more soberly estimated at 90 in the Upper Lake and 109 in the Lower". The largest islands are Inishmore at the northern end of Upper Lough Erne (not to be confused with "Inish More or Davy's Island" in Lower Lough Erne) and Galloon Island at the lower end of Upper Lough Erne. Whether these are entirely bounded by the lake, or partly bounded by the River Erne, is a matter of opinion. The next largest is
Boa Island, within Lower Lough Erne. All three of these comprise multiple
townlands. Many of the next largest islands constitute a single townland. Islands in the lower lake include
Boa Island, Cleenishmeen Island, Crevinishaughy Island, Cruninish Island,
Devenish Island, Ely Island, Goat Island, Horse Island, Inish Doney, Inish Fovar, Inish Lougher, Inish More or Davy's Island,
Inis Rath,
Inishmacsaint, Inishmakill,
Lustybeg Island,
Lustymore Island and
White Island. Those in the upper lake include Bleanish Island, Crehan Island, Dernish Island, Inishcorkish, Inishcrevan, Inishfendra, Inishleague, Inishlught, Inishrath, Inishturk, Killygowan Island, Naan Island and Trannish. Several of the islands are privately owned, and occasionally come on to the open market. In 2007 Inishturk went on the market at the price of £695,000. In 2012 Inisliroo went on the market at the price of £600,000. The lake islands are the main Irish stronghold of the scarce
garden warbler. == Administration ==