<P> However, in 1873, the county seat was moved to the mining boomtown of Cerbat . In 1877, the Southern Pacific Railroad arrived at Yuma . It bought out Johnson's Colorado Steam Navigation Company, and by 1878 had built rails into Maricopaville resulting in wagon traffic moving to that railhead that was closer to the mines in the northern interior than Hardyville . Traffic on the road to the interior mines of the east from Hardyville waned except for that to Cerbat, Mineral Park, and Chloride . In May 1881, Issac Polhamus, captain of one of the Southern Pacific - owned Colorado Steam Navigation Company steamboats, went into competition with Hardy for the trade to those mines establishing Polhamus Landing, a rival landing five miles up river, closer to the mines, taking away most of its river trade . Worse yet, the construction of the Atlantic and Pacific Railroad to its bridge crossing on the Colorado River near Needles, in May 1883, saw the remaining interior mining trade move away from the Colorado River and Hardyville . The Hardyville post office was discontinued in favor of the one in Mohave City on February 19, 1883 . As the silver price declined in the late 1880s and early 1890s, the Hardyville mill, its only remaining economic resource, became idle and the remaining population of the town left, leaving it to become a ghost town . Hardyville still appears with that name on a September 1911 reprint of a U.S. Geological Survey, Reconnaissance Map, Arizona, Nevada, California, Camp Mohave Sheet, Edition of March 1892 . </P> <P> Hardyville Pioneer Cemetery, a small cemetery, now a historic landmark, is the most significant existing remnant of Hardyville at 35 ° 7 ′ 16" N 114 ° 35 ′ 17" W ﻿ / ﻿ 35.12111 ° N 114.58806 ° W ﻿ / 35.12111; - 114.58806 . An unofficial historical marker for the town is in the parking lot across Highway 95 from the cemetery at 35 ° 7 ′ 16" N 114 ° 35 ′ 17" W ﻿ / ﻿ 35.12111 ° N 114.58806 ° W ﻿ / 35.12111; - 114.58806 . The Hardyville Mill ruins appeared on a USGS Topographic map, at 35 ° 7 ′ 14" N 114 ° 34 ′ 47" W ﻿ / ﻿ 35.12056 ° N 114.57972 ° W ﻿ / 35.12056; - 114.57972 a recent satellite view seems to show some remains . </P> <P> Decades later, Hardyville would be resurrected as Bullhead City with the construction of Davis Dam between 1942 and 1953 . The dam was originally called Bullhead Dam after "Bull's Head Rock", a well - known rock formation along the Colorado River . Steam boats on the Colorado River used the rock as a navigation point . After the construction of Davis Dam, the water level rose and now almost completely covers the landmark . The community that arose during the construction of Bullhead Dam was nicknamed Bullhead . Bullhead City became the headquarters for the construction project, which was completed in 1953 . Thus the name Bullhead City was born . As the nearby Lake Mohave developed into a major tourism destination, and as the casino and resort town of Laughlin, Nevada sprouted up across the river, Bullhead City grew rapidly . </P> <P> In 1970, Bullhead City was the name of the six blocks that ran north - south along Highway 95 across the river from Don Laughlin's casino . About a thousand people lived in the original Bullhead City at that time, with about 3,000 people in Riviera . In 1984, the small communities of Bullhead City, Riviera, and Holiday Shores voted to incorporate, choosing the name "Bullhead City" for its historical significance . </P>

How did bullhead city arizona get its name
find me the text answering this question