From SFGATE – Heavy rain and melting snow from a warm tropical storm flooded Yosemite Valley over the weekend, covering some roads with up to 4 feet of water. The national park system released footage Wednesday showing meadows that look like lakes and raging waterfalls that sound like thunder. A swollen Merced River covered bridges and campgrounds in water. The river crested at 13.73 feet at Pohono Bridge, rising 4 feet above flood stage and inundating campgrounds, meadows and roadways. (more)