Abstract
![CDATA[Trend detection in hydrologic data has received a great attention recently as it helps explaining climate variability and change in hydrological regimes. Both climatic variability and anthropogenic changes reflected in hydrologic data, can adversely affect trend test results. Combined effects of climatic variability and anthropogenic changes are not always uniform because of the high uncertainty in both the atmospheric forcing and the hydrological processes. This paper presents results of trend analysis of annual maximum flood data from 246 river catchments across north eastern parts of Australia. Three non-parametric tests, Mann-Kendall, Pre-whitening and Trend Free Pre-whitening, were carried out to investigate the trends at 10%, 5% and 1% levels of significance. The results show that the percentage of stations showing downward trend is about 14% whereas the upward trend is about 22%. The Northern Territory stations are dominated by upward trends and the Queensland stations are dominated by downward trend. It is also found that catchment size and mean annual rainfall do not have any notable effect on trend results.]]
| Original language | English |
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| Title of host publication | 36th Hydrology and Water Resources Symposium (HWRS 2015): The Art and Science of Water, 7-10 December 2015, Hobart, Tasmania |
| Publisher | Engineers Australia |
| Pages | 412-419 |
| Number of pages | 8 |
| ISBN (Print) | 9781922107497 |
| Publication status | Published - 2015 |
| Event | Hydrology and Water Resources Symposium - Duration: 7 Dec 2015 → … |
Conference
| Conference | Hydrology and Water Resources Symposium |
|---|---|
| Period | 7/12/15 → … |
Keywords
- Australia, Northern
- flood control
- mathematical models
- streamflow
- watershed management