The Merced River, a tributary of the mighty San Joaquin River, follows a winding 145-mile path that originates in the majestic Sierra Nevada and meanders through the agricultural plains of the San Joaquin Valley. This river is celebrated for its dramatic and scenic route through the southern section of Yosemite National Park. Here, its swift currents and sharp inclines present a stark contrast to the gently undulating meanders of its lower reaches.

The Merced is home to a rich population of both rainbow and brown trout. However, fishing regulations along the Merced River can vary considerably. Some sections are designated as catch-and-release only, while others permit the harvest of a limited number of fish. Additionally, the fishing season along the river can differ. Some segments are open to anglers year-round, while others are accessible only during specific times of the year. Always consult the most current regulations for exact dates and limits.

The lower reaches of the Merced River also offer excellent bass fishing, boasting a healthy population of largemouth, smallmouth, and spotted bass. Catfish, stripers, bluegill, and other warm-water species can also be found in this section.