- Alluvium (from Latin alluvius, from alluere ’to wash against’) is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium.
- Yakima Sportsman State Park (parks.wa.gov)
Yakima Sportsman State Park is a 266-acre camping park originally created by the Yakima Sportsman’s Association to promote game management and to preserve our natural resources.