A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Colorado River Basin Probable Maximum Floods: Hoover and Glen Canyon Dams
High runoff from the late season melt of the snowpack in the spring and summer of 1983 resulted in the first nontest operation of Glen Canyon Dam's spillways since they were placed in operation in 1964. During these operations, cavitation caused severe damage to the concrete lining of the spillways, leading to the Bureau of Reclamation's assessment of potential modifications to correct the problem. The spillways at Hoover Dam were also damaged from flood releases during 1983. As a part of dam safety investigations, Reclamation computed probable maximum floods for each structure in the following manner. Upper Limit Design Rainstorms (ULDRS) were developed for three locations in the Colorado River drainage above Hoover Dam. For each location, the rainfall magnitude, spatial and temporal distributions, and seasonal variations were determined from transposed and moisture maximized historical events. A hydrologic model was developed to convert excess precipitation to runoff and to generate the flood hydrographs.
Colorado River Basin Probable Maximum Floods: Hoover and Glen Canyon Dams
High runoff from the late season melt of the snowpack in the spring and summer of 1983 resulted in the first nontest operation of Glen Canyon Dam's spillways since they were placed in operation in 1964. During these operations, cavitation caused severe damage to the concrete lining of the spillways, leading to the Bureau of Reclamation's assessment of potential modifications to correct the problem. The spillways at Hoover Dam were also damaged from flood releases during 1983. As a part of dam safety investigations, Reclamation computed probable maximum floods for each structure in the following manner. Upper Limit Design Rainstorms (ULDRS) were developed for three locations in the Colorado River drainage above Hoover Dam. For each location, the rainfall magnitude, spatial and temporal distributions, and seasonal variations were determined from transposed and moisture maximized historical events. A hydrologic model was developed to convert excess precipitation to runoff and to generate the flood hydrographs.
Colorado River Basin Probable Maximum Floods: Hoover and Glen Canyon Dams
1990
108 pages
Report
No indication
English
Civil Engineering , Hydrology & Limnology , Geology & Geophysics , Runoff , Glenn Canyon Dam , Hoover Dam , Flood control , Colorado River Basin , Spillways , Damage assessment , Periodic variations , Rainfall , Snowmelt , Hydraulic models , Maps , Hydrogeology , Soil properties , Storms , Magnitude , Flooding , Probable maximum precipitation , Design flood , Peak discharge