YOSEMITE NATIONAL PARK, Calif. (AP) — The river running through Yosemite National Park briefly flooded its banks and a sheriff in California’s Central Valley organized an airdrop of feed for 30 cows stranded downstream by rising waters as a heat wave melts record snowpack in the Sierra Nevada.

The National Weather Service says the Merced River should reach flood stage for a second-straight night Wednesday under the park’s iconic Pohono Bridge. Cooling temperatures Thursday and through the weekend will slow the melt and ease the flooding.

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The park reported soggy campgrounds but little damage.

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The Fresno Bee reported Wednesday that the Merced County sheriff used the department’s helicopter to drop two tons of hay on a river island where 30 cows have been stranded since January. Each cow has dropped about 300 pounds in weight.

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