Rogerson, then crosses into Nevada at Jackpot and continues to a junction with Interstate 80 at Wells. Trans IV, a small public transportation system operated by CSI, is also available. Limited commercial air service is provided at Magic Valley Regional Airport, also known as Joslin Field. As of August 2017, daily flights to Salt Lake City are available from Delta Connection (fulfilled by SkyWest Airlines) using the Canadair CRJ200. Twice-weekly service to Las Vegas was previously operated by Allegiant Air, but the airline discontinued the route in January 2012, citing insufficient ticket prices. Geography Twin Falls is located at 42°34'N 114°28'W (42.561,-114.464). According to the United States Census Bureau, the city has a total area of , of which is covered by water. The Snake River Canyon forms the city's northern limits, separating it from Jerome County. Three waterfalls are in the immediate area. Shoshone Falls is located about east of Twin Falls city. Pillar Falls is located roughly upstream from the Perrine Bridge, while Twin Falls, the city's namesake, is located upstream of Shoshone Falls. Shoshone Falls stands at , which is higher than Niagara Falls. The Perrine Bridge, which spans the Snake River Canyon immediately north of the city, is one of only a handful of artificial structures worldwide where BASE jumping is legal. In September 2005, Miles Daisher of Twin Falls set a BASE-jumping world record by jumping off Perrine Bridge 57 times in a 24-hour period. In July 2006, Dan Schilling jumped off the bridge 201 times in 21 hours to raise money for charity. Unlike Daisher, Schilling was hoisted to the top of the bridge by a crane after every jump. Climate Twin Falls experiences a semiarid climate (Köppen climate classification BSk). Monthly temperature averages in Twin Falls range from in January to in July, with lows below freezing from December through March. Highs reach on average 18.8 days per year, but very rarely exceed . Winter snowfall averages per year, though much heavier amounts have fallen. In Twin Falls proper, an average snowfall uncommonly exceeds 6 inches of snow. Summer and autumn are very dry in Twin Falls, with less than of precipitation falling each month between June and October. Fast moving, intense electrical storms common in the deserts of the southwestern U.S. are uncommon here. Demographics 2010 census As of the census of 2010, 44,125 people, 16,744 households, and 11,011 families residing in