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Island Park Dam
Island Park Dam
is operated by the U.S. Bureau of Reclamation
Bureau of Reclamation
in Fremont County, Idaho. The dam lies in Targhee National Forest
Targhee National Forest
near Island Park. The zoned earthfill dam was built between 1937 and 1939 as part of the Minidoka Project, which provides water to irrigate farmland in Idaho's Snake River Plain.[1] The dam provides only water storage, impounding 135,000 acre feet (0.167 km3), which is distributed by the Cross Cut Canal to farms in Fremont and Madison counties in Idaho, and Teton County in Wyoming.[1] The Island Park and Grassy Lake reservoirs were built as an alternative to construction of a larger project that would have flooded the Falls River area of Yellowstone National Park.[2][3] Climate[edit] Island Park Dam, Idaho
Idaho
holds the record for the eighth-coldest temperature recorded in the United States (and the coldest temperature recorded in Idaho) at −60 °F (−51 °C).

Climate data for Island Park Dam, Idaho

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year

Record high °F (°C) 49 (9) 55 (13) 62 (17) 76 (24) 84 (29) 91 (33) 97 (36) 96 (36) 91 (33) 82 (28) 68 (20) 56 (13) 97 (36)

Average high °F (°C) 26.5 (−3.1) 31.6 (−0.2) 38.5 (3.6) 48.4 (9.1) 59.8 (15.4) 68.8 (20.4) 79.0 (26.1) 78.5 (25.8) 68.7 (20.4) 54.9 (12.7) 37.2 (2.9) 27.6 (−2.4) 51.6 (10.9)

Average low °F (°C) 3.0 (−16.1) 4.8 (−15.1) 10.5 (−11.9) 21.5 (−5.8) 31.1 (−0.5) 37.7 (3.2) 42.9 (6.1) 40.7 (4.8) 32.8 (0.4) 25.1 (−3.8) 14.9 (−9.5) 5.6 (−14.7) 22.6 (−5.2)

Record low °F (°C) −60 (−51) −47 (−44) −36 (−38) −18 (−28) 7 (−14) 20 (−7) 25 (−4) 17 (−8) 8 (−13) −6 (−21) −34 (−37) −51 (−46) −60 (−51)

Average precipitation inches (mm) 3.80 (96.5) 2.93 (74.4) 2.48 (63) 2.03 (51.6) 2.49 (63.2) 2.71 (68.8) 1.25 (31.8) 1.45 (36.8) 1.50 (38.1) 1.89 (48) 2.56 (65) 3.55 (90.2) 28.65 (727.7)

Average snowfall inches (cm) 48.6 (123.4) 37.5 (95.3) 29.3 (74.4) 13.9 (35.3) 4.1 (10.4) 0.4 (1) 0.0 (0) 0.1 (0.3) 1.0 (2.5) 6.6 (16.8) 25.3 (64.3) 47.9 (121.7) 214.8 (545.6)

Average precipitation days 15 12 11 9 10 10 6 7 6 7 10 13 116

Source: Western Regional Climate Center[4]

References[edit]

^ a b c "Island Park Dam". Bureau of Reclamation. Retrieved 4 May 2011.  ^ Haines, Aubrey L. (1996). The Yellowstone Story: A History of Our First National Park. University Press of Colorado. p. 346. ISBN 0-87081-390-0.  ^ Yochim, Michael J. "Conservationists and the Battles to Keep Dams Out of Yellowstone: Hetch Hetchy Overturned" (PDF): 299.  ^ "ISLAND PARK, IDAHO". Western Regional Climate Center. Retrieved January 12, 2016. 

External links[edit]

Island Park Dam
Island Park Dam
at the Bureau of

.

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