In 1884, a significant engineering endeavor began high in the mountains north of Redlands, as Havasu News reported. A dedicated group of ranchers from the Redlands area undertook an ambitious journey, ascending over 5,000 feet in elevation to a chosen site. Their purpose was clear: to construct a robust rock dam that would effectively collect and store water, primarily for the vital needs of agriculture in the burgeoning region below. This project, conceived and executed in the late 19th century, marked a pivotal moment in the development of water resources, demonstrating remarkable foresight and determination by its creators. The scale of the undertaking at such an elevation, utilizing the technology and resources available at the time, made it a truly extraordinary feat of human ingenuity.

The completion of this monumental dam led to the formation of a vast reservoir that, upon its inauguration, achieved the distinction of being the largest artificial lake in the entire world. This newly created water body profoundly and permanently reshaped the natural landscape of the area. What was once described as a lush, green valley, known for its vibrant ecosystem and notably for teeming with grizzly bears, underwent an irreversible transformation. The impoundment of water altered the valley’s topography and ecology, displacing wildlife and creating a new aquatic environment. This dramatic change fundamentally redefined the valley's character, transitioning it from a wild, natural habitat to a managed water resource.

Today, the region of Big Bear is, in many significant aspects, defined by the very lake born from that 1884 dam. This expansive artificial lake has evolved beyond its initial agricultural purpose to become the central feature and scenic backdrop for a thriving four-season tourist destination. Its enduring presence draws visitors year-round, offering a diverse array of recreational opportunities that cater to various interests. During the winter months, the surrounding mountainous terrain and lake views attract numerous skiers and snowboarders seeking adventure on the slopes. As the seasons transition to warmer weather, the focus shifts to water-based activities, with the lake becoming a popular hub for boaters and its shores attracting hikers eager to explore the scenic trails. The historic legacy of early water management thus continues to shape Big Bear’s identity, supporting a robust tourism economy that benefits from the unique landscape created over a century ago.