Richard Hereford

• Entrenchment and widening of the upper San Pedro River, Arizona
• Late Holocene alluvial geomorphology of the Virgin River in the Zion National Park area, southwest Utah
• Description of map units and discussion to accompany map showing surficial geology and geomorphology of the Palisades Creek Archeologic area, Grand Canyon National Park, Arizona
• Geomorphic history of the Virgin River in the Zion National Park area, southwest Utah
• Late Holocene debris fans and alluvial chronology of the Colorado River, eastern Grand Canyon, Arizona
• Late Holocene debris fans and alluvial chronology of the Colorado River, eastern Grand Canyon, Arizona
• Precipitation history of the Colorado Plateau region, 1900-2000
• Surficial geology, geomorphology, and erosion of archeologic sites along the Colorado River, eastern Grand Canyon, Grand Canyon National Park, Arizona
• Variation of warm-season rainfall frequency in the southern Colorado Plateau and its effect on runoff and alluvial-channel morphology