美熹德河（Merced River）是美国加利福尼亚州内的一条河流，其源头位于优胜美地国家公园的南部，此后它注入约塞米特峡谷。此后它被新埃克斯切凯尔坝堵住形成麦克卢尔湖。在克罗克·哈夫曼分水坝它的水被分开注入美熹德河灌溉区。剩下的水向西南流过山地和圣华金谷注入圣华金河。

美熹德河受美国国家野生和风景法的保护。到麦克卢尔湖为止它可以自由流畅，在冬季和春季容易形成大水，而深夏和秋季则水流极小。加利福尼亚州140号高速公路部分沿美熹德河行走，是进入优胜美地国家公园的主要途径。美熹德河畔有许多休闲机会，包括钓鱼、划皮艇、白浪木筏、野营、徒步旅行、游泳和野餐。

The Merced River (pronounced mɜːsɛd), in the central part of the U.S. state of California, is a 145-mile (233 km)-long tributary of the San Joaquin River flowing from the Sierra Nevada into the San Joaquin Valley. It is most well known for its swift and steep course through the southern part of Yosemite National Park, and the world-famous Yosemite Valley. The river's character changes dramatically once it reaches the foothills and the lowlands, becoming a slow-moving waterway meandering through irrigated fields.