Deildartunguhver

Deildartunguhver is a hot spring in Reykholtsdalur, Iceland. It is characterized by a very high flow rate for a hot spring (180 liters/second) and water emerges at 97 °C. It is the highest-flow hot spring in Europe.[1]

Deildartunguhver

Some of the water is used for heating, being piped 34 kilometers to Borgarnes and 64 kilometers to Akranes.

Struthiopteris fallax (Lange) S. Molino, Gabriel y Galán & Wasowicz

A fern called Struthiopteris fallax,[2][3] grows in Deildartunguhver. This fern is the only endemic fern in Iceland, and it does not grow anywhere else in the world.

References
  1. By comparison the combined flow of the 47 hot springs in Hot Springs, Arkansas is 35 liters/second and the water is 35 ° to 68 °. The Hay-Yo-Kay Hot Springs in Truth or Consequences, New Mexico has a flow of 99 liters/second. Lava Hot Springs in Idaho has a flow of 130 liters/second. Glenwood Springs in Colorado have a flow of 143 liters/second. The Dalhousie Springs complex in Australia had a peak total flow of more than 23,000 liters/second in 1915, giving the average spring in the complex an output of more than 325 liters/second. This has been reduced now to a peak total flow of 17,370 liters/second, so the average spring has a peak output of about 250 liters/second. However, there are many very-high-flow nonthermal springs; there are 33 recognized "magnitude one springs" (having a flow in excess of 2800 liters/second) in Florida alone. Silver Springs, Florida has a flow of more than 23,000 liters/second.
  2. Molino, Sonia; Gabriel y Galán, Jose M.; Wasowicz, Pawel; de la Fuente, Pablo; Sessa, Emily B. (2019-02-16). "The Struthiopteris spicant (Blechnaceae, Polypodiopsida) complex in Western Europe, with proposals for taxonomic and nomenclatural changes". Plant Systematics and Evolution. 305 (4): 255–268. doi:10.1007/s00606-019-1565-0. ISSN 2199-6881.
  3. Perez, Ruben Pino; Galan, Jose Maria Gabriel Y.; Wasowicz, Pawel (2017-03-31). "New combinations in Struthiopteris spicant for the European flora". Phytotaxa. 302 (2): 198–200. doi:10.11646/phytotaxa.302.2.11. ISSN 1179-3163.

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