Probable maximum flood for Googong dam.
Material type:
TextLanguage: ENG Publication details: JUL 1987Description: 55p., 21 refs, 16 figsReport number: HWR-86/10Subject: This report describes the methodology used to determine the Probable Maximum Flood (PMF) for the Googong Dam with its present spillway configuration. The spillway was designed in 1976 for an inflow PMF of 4,500 cumecs and an outflow PMF of 4,300 cumecs. Due to major revisions in the methods used to determine the Probable Maximum Precipitation (PMP) and the now widespread use of nonlinear rainfall-runoff models, a review of the PMF was required to check the existing spillway capacity. The outflow PMF for the existing Googong Dam spillway is estimated as 9,500 cumecs generated by a six hour duration thunderstorm. The corresponding inflow is 10,300 cumecs. The inflow PMF is estimated to be 11,600 cumecs generated by a three hour duration thunderstorm with the corresponding outflow for the existing spillway being 8,100 cumecs. The PMF has been assigned an Annual Exceedance Probability (AEP) of 1 in 10
| Item type | Current library | Collection | Call number | Status | Date due | Barcode | |
|---|---|---|---|---|---|---|---|
Books
|
Australian Emergency Management Library | BOOK | 627.883 PRO (Browse shelf(Opens below)) | Available | 005258266 |
1987 revision
This report describes the methodology used to determine the Probable Maximum Flood (PMF) for the Googong Dam with its present spillway configuration. The spillway was designed in 1976 for an inflow PMF of 4,500 cumecs and an outflow PMF of 4,300 cumecs. Due to major revisions in the methods used to determine the Probable Maximum Precipitation (PMP) and the now widespread use of nonlinear rainfall-runoff models, a review of the PMF was required to check the existing spillway capacity. The outflow PMF for the existing Googong Dam spillway is estimated as 9,500 cumecs generated by a six hour duration thunderstorm. The corresponding inflow is 10,300 cumecs. The inflow PMF is estimated to be 11,600 cumecs generated by a three hour duration thunderstorm with the corresponding outflow for the existing spillway being 8,100 cumecs. The PMF has been assigned an Annual Exceedance Probability (AEP) of 1 in 10
There are no comments on this title.