Rainbow Bridge National Monument monitoring program : April 1, 1978-September 30, 1979
US Bureau of Reclamation. 1979. Rainbow Bridge National Monument monitoring program : April 1, 1978-September 30, 1979. Status Report No. 11
In a suit dated August, 1973 (Friends of the Earth et al . vs. Armstrong et al . ) the 10th Circuit Court decreed that the Bureau of Reclamation (Water and Power Resources Service) monitor Rainbow Bridge National Monument for a period of 10 years to determine any effects from the incursion of Lake Powell waters. A monitoring program of a nondestructive nature was developed which includes geologic studies, surveys and photography. The program has been conducted on a periodic basis, checking for any changes in the structural stability of Rainbow Bridge. Studies conducted during this report period (April 1, 1978 - September 30 1979), concur with previous reports and indicate that no adverse effects have occurred to the stability of Rainbow Bridge from the incursion of Lake Powell waters.