Flood, Mariposa
- When
- June 16, 2:00 AM PST to 2:00 PM PST
- Where
- Mariposa County, Yosemite Lodge
- Property damage
- $100,000
- Coordinates
- 37.582, -119.905 (the zone’s center; the record gives no point)
After the much delayed spring warming, snowmelt runoff finally began in earnest with the Merced River reaching a height of 10.5 feet in the wee hours of the morning of Monday, June 16th, with a flow of 7111CFS at the Pohono Bridge Gauge in lower Yosemite Valley. The warning stage is 9.5 feet with flood stage at 12.0 feet. Per WSOM definition the flow was contained pretty much within the Merced riverbanks with some low-lying meadows flooded near the river and precautionary evacuations of 20 campsites right on the river by the Park Service. No damage reported on the Yosemite Valley floor from the flooding although a repair in State Highway 140 just downstream of the Pohono Bridge from the January 1997 floods again failed due to the increase in water pressure from the rise in the river.