Two photos associated with Lauren’s tag “1883 El Niño after effects”.
Cavitation at the Glen Canyon Dam, the cause of the emergency in 1983 via Flow Science.
During the 1983 Colorado River flood, described by some as an example of a “black swan” event, sheets of plywood (visible just above the steel barrier) were installed to prevent Glen Canyon Dam from overflowing. Source: Bureau of Reclamation
The Lees Ferry streamgage then and now.
September 21, 1923, 9:00 a.m. — Colorado River at Lees Ferry. From right bank on line with Klohr’s house and gage house. Old “Dugway” or inclined gage shows to left of gage house. Gage height 11.05′, discharge 27,000 cfs. Lens 16, time =1/25, camera supported. Photo by G.C. Stevens of the USGS. Source: 1921-1937 Surface Water Records File, Colorado R. @ Lees Ferry, Laguna Niguel Federal Records Center, Accession No. 57-78-0006, Box 2 of 2 , Location No. MB053635.
Lees Ferry streamgage and cableway downstream on the Colorado River, Arizona. (Public domain.)