The opening scene for the first season of the US TV show "Bonanza" was shot at which location?

"Bonanza" is an American Western television series that ran on NBC from September 12, 1959, to January 16, 1973. Lasting 14 seasons and 431 episodes, Bonanza is NBC's longest-running western, and ranks overall as the second-longest-running western series on U.S. network television (behind CBS's Gunsmoke), and within the top 10 longest-running, live-action American series. The show continues to air in syndication.

The show is set in the 1860s and it centers on the wealthy Cartwright family who live in the vicinity of Virginia City, Nevada, bordering Lake Tahoe. The series initially starred Lorne Greene, Pernell Roberts, Dan Blocker and Michael Landon

The opening scene for the first season was shot at Lake Hemet, a reservoir in the San Jacinto Mountains, Riverside County, California, and later moved to Lake Tahoe.

Lake Hemet is a water storage reservoir located in the San Jacinto Mountains in Mountain Center, Riverside County, California, with a capacity of 14,000 acre feet (17,000,000 m3) of water. It was created in 1895 with the construction of the Hemet Dam, and is owned and operated by the Lake Hemet Municipal Water District (LHMWD).