Restoration efforts along the Merced River are guided by the best available science. A number of research studies are ongoing to support the restoration work and inform future decisions concerning the most effective methods and locations for restoration work as well as the management of bridges and infrastructure along the river. Through these studies both park managers and the public will gain a better understanding of the ecological condition of the river, how the floor of Yosemite Valley was formed, and how the river naturally moves and shapes its channel.
Merced River Restoration
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Geologic MappingLatest Pleistocene and Holocene surficial deposits and landforms of Yosemite Valley
The Merced River Restoration project includes a mapping effort in the Yosemite Valley that describes the distribution of sedimentary deposits and landforms based on topographic and field relations. This work combines these surficial observations from the valley floor with the dating of sedimentary deposits to reconstruct the long-term geomorphic evolution of the Merced River in Yosemite Valley since the ~15,000-year-old retreat of the Last Glacial Maximum (LGM) valley glacier.