Catchment flood modelling Hydrodynamic modelling provides a means to analyse processes occurring within a catchment and to test a range of scenarios which may influence future flood events.
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Borthwick Water in flood conditions Links between the physical characteristics of the Teviot Catchment and flooding The Teviot river basin above Hawick is 324 km2 in area and includes three main river systems: River Teviot, Borthwick Water and Slitrig Water and two major tributary systems: Limie Cleuch and Allan Water.
Carrying out repairs to the banks of the River Teviot along Duke Street in Hawick – 1890 Flood causes in the Scottish Borders Records of flooding in the Teviot catchment extend back into history and show that floods can be caused by summer thunderstorms, winter rain or snow melt and can be so severe that [...]
To assess the environmental factors controlling floods in Tajikistan, comparisons were made between the river flows in each river basin and the climate in different locations. The analysis identified those basins with the highest floods and produced indicative results of the main climatic controls. This enabled a further assessment to be made of the likely [...]
Tajikistan weather observation station Flooding is not a new phenomenon in Tajikistan, there is evidence from a range of sources that major floods have occurred in historical times. Landforms in the mountains and foothills supply ample evidence of extreme paleo-floods. Debris flows have occurred in most of the high mountain catchments with huge fans of [...]
The river gauging network in Tajikistan evolved over a period of 100 years although most developments occurred in the 1930s and from 1950 to 1979. Records in excess of 50 years exist for a significant number of the stations. Number of stations installed in decades: Date Number of stations Before 1900 2 1900-1901 1 1910-1919 1 1920-1929 8 1930-1939 16 1940-1949 5 [...]
In 2001, Dr Richard Johnson visited Tajikistan to assess the networks of river gauging stations and climate stations in the country. Funded by the Asian Development Bank, this project initially involved the compilation of an inventory of the stations, to assess the networks in terms of their contribution to flood management. The Tajikistan Department of Hydrometeorology [...]
Landslip in the Langtang Valley – Nepal Sediment loads of Asian rivers are reported to be the highest in the world, delivering an estimated 80% of total sediment input to the oceans. These large sediment loads are due to the exposure of the geologically young rocks forming the Himalayan mountain chain, a range with some [...]
