Manuscripts
Horn Creek Rapid. Bright Angel gauge: July 19: 19,700 cfs. July 20: 18,500 cfs. July 21: 17,400 cfs
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One of the Mexican Hat Expedition sadirons in Horn Creek. Bright Angel gauge: July 19: 19,700 cfs. July 20: 18,500 cfs. July 21: 17,400 crfs
Manuscripts
mssMarston papers P005/0231

Frank Wright in Monument Creek Rapid. Bright Angel gauge: July 18: 21,000. July 19: 19,700. July 20: 18,500. July 21: 17,400
Manuscripts
mssMarston papers P005/0234

Garth Marston in Horn Creek Rapid. Bright Angel gauge: 11,400 cfs
Manuscripts
mssMarston papers V066/0061

The Dusty Dozen lining Horn Creek Rapid. Bright Angel gauge: 2070 cfs
Manuscripts
mssMarston papers V146/0006

