Teresa Wriston

Author's Entries

  • Pleistocene Pluvial Lakes

    During the Last Glacial Maximum, from about 24,000 to about 18,000 years ago, and for several thousand years thereafter, many pluvial (that is, rainfed) lakes filled the basins of southeastern Oregon. The majority of those lakes reached their deepest water levels—called highstands—in the last glacial cycle, shortly before …

    Oregon Encyclopedia