|- location||Yellowstone National Park, Wyoming|
|Madison Junction, Wyoming|
|Length||21 mi (34 km)|
|- left||Sentinel Creek, Fairy Creek, Little Firehole River, Iron Spring Creek|
|- right||Nez Perce Creek|
The Firehole River is located in northwestern Wyoming, and is one of the two major tributaries of the Madison River. It flows north approximately 21 miles (34 km) from its source in Madison Lake on the Continental Divide to join the Gibbon River at Madison Junction in Yellowstone National Park. It is part of the Missouri River system.
The Firehole River flows through several significant geyser basins in the park to include the Upper Geyser Basin, which contains the world-famous geyser Old Faithful. The river was named by early trappers for the steam that makes it appear to be smoking as if on fire.
The river is surrounded by geothermal features which empty water into it. One effect of the input of this water is to increase the temperature of the water. Temperatures in the river have been measured as high as 30 °C (86 °F) and average 5 to 10 °C (9 to 18 °F) higher than areas upstream of geothermal influence.
Water entering the river from geothermal features contains dissolved chemicals and minerals. Levels of boron and arsenic have been found to be above the standard limits for protection of aquatic organisms. Despite these levels, brown and rainbow trout live and spawn in the river.
Significant tributaries of the Firehole are the Little Firehole River, Fairy Creek, Iron Spring Creek, Sentinel Creek and Nez Perce Creek. All these tributaries bring cool waters to the Firehole and provide refuge for trout in the mainstem during mid-summer high temperatures caused by geothermal activity.
The Firehole River is a famous and storied destination for serious fly fishermen. When it was discovered in the 1830s by American explorers, the Firehole was barren of trout above what is now called Firehole Falls. Brook trout were first introduced to the upper Firehole in 1889, while brown trout, the river's most plentiful trout today, was first stocked in 1890. Rainbow trout were not introduced until 1923. Mountain whitefish are native to the Firehole below Firehole Falls. By the late 19th century, the Firehole and Yellowstone National Park in general was a popular destination for fishermen. In 1955 all stocking programs in the park were discontinued and today's Firehole trout are completely wild populations. In 1968, based on increasing pressure on the Firehole, the Gibbon and Madison rivers, the National Park Service designated these waters as Fly Fishing Only.
From one of the earliest accounts of fly fishing in Yellowstone:
The Fire hole is a companionable river. Notwithstanding its forbidding name, it is pre-eminently a stream for the angler, and always does its best to put him at his ease. Like some hospitable manorial lord, it comes straight down the highway for a league to greet the stranger and to offer him the freedom of its estate. Every fisherman who goes much alone along streams will unconsciously associate certain human attributes with the qualities of the waters he fishes. It may be a quiet charm that lulls to rest, or a bold current that challenges his endurance and caution. Between these extremes there is all that infinite range of moods and fancies which find their counterpart in the emotions. The Firehole possesses many of these qualities in a high degree. It can be broad, sunny and genial, or whisper with a scarcely audible lisp over languid, trailing beds of conferva; and anon, lead you with tumultuous voice between rocky walls where a misstep would be disastrous.— Klahowya, Fly Fishing in Wonderland, 1910
In 2005, Raymond Keift published Firehole River Murder: Yellowstone Fly-Fishing Mystery Series, a story about a wealthy but obnoxious businessman who was murdered on the banks of the Firehole River in Yellowstone.
|Wikimedia Commons has media related to Firehole River.|
- Angling in Yellowstone National Park
- Fishes of Yellowstone National Park
- Fly fishing
- Tributaries of the Missouri River
- U.S. Geological Survey Geographic Names Information System: Madison River, USGS GNIS
- "Firehole River". Yellowstone National Park. Retrieved 2005-09-16.
- Rubenstein, Paul; Whittlesey, Lee H. (2000). The Guide to Yellowstone Waterfalls and their Discovery. Neenah, WI: Big Earth Publishing. pp. 33–37. ISBN 978-1-56579-351-4.
- Goldstein JN, Hubert WA, Woodward DF, Farag AM, Meyer JS (2001). "Naturalized salmonid populations occur in the presence of elevated trace element concentrations and temperatures in the Firehole River, Yellowstone National Park, Wyoming, USA". Environmental Toxicology and Chemistry. 20 (10): 2342–52. doi:10.1897/1551-5028(2001)020<2342:NSPOIT>2.0.CO;2. PMID 11596769.
- Brooks, Charles E. (1979). The Living River-A Fisherman's Intimate Profile of the Madison River Watershed—Its History, Ecology, Lore and Angling Opportunities. Garden City, NJ: Nick Lyons Books. pp. 56–59. ISBN 0-385-15655-3.
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- Klahowya (1910). Fly Fishing in Wonderland. Chicago: O. P. Barnes. p. 45.
- Keift, Raymond (2005). Firehole River Murder: Yellowstone Fly-Fishing Mystery Series. Bloomington, IN: Authorhouse. ISBN 9781418464561.
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- Brooks, Charles E. (1979). The Living River-A Fisherman's Intimate Profile of the Madison River Watershed—Its History, Ecology, Lore and Angling Opportunities. Garden City, NJ: Nick Lyons Books. ISBN 0-385-15655-3.
- Mathews, Craig; Molinero, Clayton (1997). The Yellowstone Fly-Fishing Guide-A authoritative guide to the waters of Yellowstone National Park. Guilford, CT: The Lyons Press. ISBN 1-55821-545-X.
- Brooks, Charles E. (1984). Fishing Yellowstone Waters. Clinton, NJ: New Win Publishing Inc. ISBN 0-8329-0353-1.
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