A key objective of the National Water Initiative is to establish a comprehensive system of water ... more A key objective of the National Water Initiative is to establish a comprehensive system of water accounting to ensure that the overarching objective to establish a nationally compatible market, regulatory and planning based system of managing surface and ...
... CORDERY I. (1) ; MCCALL M. (2) ; NAZEMOSADAT MJ (3) ; Affiliation(s) du ou des auteurs / Auth... more ... CORDERY I. (1) ; MCCALL M. (2) ; NAZEMOSADAT MJ (3) ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). (1) School of Civil & Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, AUSTRALIE (2) Bureau of Meteorology ...
Hydrology and Water Resources Symposium 1986: River Basin Management; Preprints of Papers, 1986
Operation of streamgauging networks is expensive. However it is often stated that the benefits of... more Operation of streamgauging networks is expensive. However it is often stated that the benefits of data collection far exceed the costs. A case study was undertaken to assess the benefit-cost ratio of the long-term continuation of data collection at one station, assuming this data collection had only a single purpose, provision of information for the design of a flood mitigation scheme. The benefit of the data was the reduction in uncertainty of the value of damages to be averted by the scheme or the reduction in uncertainty in the cost of the ...
Attempts have been made to relate drought in Australia and other countries to large scale phenome... more Attempts have been made to relate drought in Australia and other countries to large scale phenomena such as sea surface temperatures (SST) and southern oscillation indices (SOI). In some places qualitative seasonal rainfall forecasts are made based on these relations. It is quite usual for such relations to have correlation coefficients as high as 0.7. However it is shown here
The rainfalls used in the practical estimation of design floods are generally based on frequency-... more The rainfalls used in the practical estimation of design floods are generally based on frequency-duration relationships derived from recorded intense burst of rainfall of various durations rather than from complete storms. These recorded intense bursts are therefore used in the ...
The US SCS method has been tested as a design flood pro cedure in two regions in eastern Austral... more The US SCS method has been tested as a design flood pro cedure in two regions in eastern Australia. Runoff curve numbers have been derived from observed data on a probabilistic rather than an event basis, fitting the design case. Derived values depended on the method for determining time of concentration and the average re currence interval of the design
An intensive network of hydrological instruments has been installed at Fowlers Gap in arid wester... more An intensive network of hydrological instruments has been installed at Fowlers Gap in arid western New South Wales, Australia, where the average annual rainfall is 195 mm and the average annual potential evaporation is 3.5 m. The network has been designed to use simple, reliable procedures to overcome the problems usually experienced in collecting data in arid environments. Since data
A method of estimating large floods using a linear storage-routing approach is presented. The dif... more A method of estimating large floods using a linear storage-routing approach is presented. The differences between the proposed approach and those traditionally used are (1) that the flood producing properties of basins are represented by a linear system,(2) the storage ...
Two similar, non-linear, network models have been applied to three basins in coastal NSW to exami... more Two similar, non-linear, network models have been applied to three basins in coastal NSW to examine their potential for use in operational flood forecasting. Network models have the potential to make direct allowance for non-uniform spatial distribution of rainfall, as well as to provide for non-linear basin response to the input rainfall. The two models were applied under operational flood forecasting conditions to data for 7 or 8 observed floods on each basin and their ability to reproduce the observed hydrographs was examined. These results were compared with those obtained from the unit hydrograph approach which is currently used for flood forecasting on these basins. The results indicate that the determination of excess rainfall is probably more critical than the type of model used to calculate the direct runoff hydrograph. There appears to be little difference between the abilities of the unit hydrograph and the network models to reproduce the observed hydrographs on these thr...
... Full Text PDF (122kb). To cite this article: Ruiz, Jose Eric; Cordery, Ian and Sharma, Ashish... more ... Full Text PDF (122kb). To cite this article: Ruiz, Jose Eric; Cordery, Ian and Sharma, Ashish. Australia's Rainfall and Pacific Ocean Heat Storage [online]. ... Affiliation: (1) School of Civil and Environmental Engineering, University of New South Wales, Sydney, Australia (2) School of ...
A key objective of the National Water Initiative is to establish a comprehensive system of water ... more A key objective of the National Water Initiative is to establish a comprehensive system of water accounting to ensure that the overarching objective to establish a nationally compatible market, regulatory and planning based system of managing surface and ...
... CORDERY I. (1) ; MCCALL M. (2) ; NAZEMOSADAT MJ (3) ; Affiliation(s) du ou des auteurs / Auth... more ... CORDERY I. (1) ; MCCALL M. (2) ; NAZEMOSADAT MJ (3) ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). (1) School of Civil & Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, AUSTRALIE (2) Bureau of Meteorology ...
Hydrology and Water Resources Symposium 1986: River Basin Management; Preprints of Papers, 1986
Operation of streamgauging networks is expensive. However it is often stated that the benefits of... more Operation of streamgauging networks is expensive. However it is often stated that the benefits of data collection far exceed the costs. A case study was undertaken to assess the benefit-cost ratio of the long-term continuation of data collection at one station, assuming this data collection had only a single purpose, provision of information for the design of a flood mitigation scheme. The benefit of the data was the reduction in uncertainty of the value of damages to be averted by the scheme or the reduction in uncertainty in the cost of the ...
Attempts have been made to relate drought in Australia and other countries to large scale phenome... more Attempts have been made to relate drought in Australia and other countries to large scale phenomena such as sea surface temperatures (SST) and southern oscillation indices (SOI). In some places qualitative seasonal rainfall forecasts are made based on these relations. It is quite usual for such relations to have correlation coefficients as high as 0.7. However it is shown here
The rainfalls used in the practical estimation of design floods are generally based on frequency-... more The rainfalls used in the practical estimation of design floods are generally based on frequency-duration relationships derived from recorded intense burst of rainfall of various durations rather than from complete storms. These recorded intense bursts are therefore used in the ...
The US SCS method has been tested as a design flood pro cedure in two regions in eastern Austral... more The US SCS method has been tested as a design flood pro cedure in two regions in eastern Australia. Runoff curve numbers have been derived from observed data on a probabilistic rather than an event basis, fitting the design case. Derived values depended on the method for determining time of concentration and the average re currence interval of the design
An intensive network of hydrological instruments has been installed at Fowlers Gap in arid wester... more An intensive network of hydrological instruments has been installed at Fowlers Gap in arid western New South Wales, Australia, where the average annual rainfall is 195 mm and the average annual potential evaporation is 3.5 m. The network has been designed to use simple, reliable procedures to overcome the problems usually experienced in collecting data in arid environments. Since data
A method of estimating large floods using a linear storage-routing approach is presented. The dif... more A method of estimating large floods using a linear storage-routing approach is presented. The differences between the proposed approach and those traditionally used are (1) that the flood producing properties of basins are represented by a linear system,(2) the storage ...
Two similar, non-linear, network models have been applied to three basins in coastal NSW to exami... more Two similar, non-linear, network models have been applied to three basins in coastal NSW to examine their potential for use in operational flood forecasting. Network models have the potential to make direct allowance for non-uniform spatial distribution of rainfall, as well as to provide for non-linear basin response to the input rainfall. The two models were applied under operational flood forecasting conditions to data for 7 or 8 observed floods on each basin and their ability to reproduce the observed hydrographs was examined. These results were compared with those obtained from the unit hydrograph approach which is currently used for flood forecasting on these basins. The results indicate that the determination of excess rainfall is probably more critical than the type of model used to calculate the direct runoff hydrograph. There appears to be little difference between the abilities of the unit hydrograph and the network models to reproduce the observed hydrographs on these thr...
... Full Text PDF (122kb). To cite this article: Ruiz, Jose Eric; Cordery, Ian and Sharma, Ashish... more ... Full Text PDF (122kb). To cite this article: Ruiz, Jose Eric; Cordery, Ian and Sharma, Ashish. Australia's Rainfall and Pacific Ocean Heat Storage [online]. ... Affiliation: (1) School of Civil and Environmental Engineering, University of New South Wales, Sydney, Australia (2) School of ...
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Papers by I. Cordery