Please use this identifier to cite or link to this item:
|Title:||Need and provision of optimum streamgauging network for a river basin|
|Authors:||Mathew, F T|
Jagtap, Rahul S
|Abstract:||Water data, in its entire gamut, collected through a network of hydrometeorological stations, cater to the hydrological information needs of a region. Such a network comprises of stream gauging sites, often referred as hydrometric stations, and other climatological stations to record meteorological parameters such as rainfall, wind speed, temperature, evaporation and the like. Hydrological Information System (HIS) for a region provides the data required for planning, design and management of water resources of the area, including operation and management of flood protection measures in inundation-prone areas. Streamflow data, including river stages and sediment discharges are collected through a network of hydrometric stations covering the entire basin. A hydrometric network forms a subsystem of the full-fledged hydrometeorological network for the basin. Hydrometric network for a river basin is developed, often in practice, by an evolutionary process. Sites are added over a period of time to meet the emerging national and international needs from time to time. Examples of such needs include : flood mitigation, hydropower development, water pollution control, drought management, contribution towards global environmental monitoring, etc. Hydrometric network design is guided by aspects such as type and size of the basin, sustainability and duplication avoidance. Network design also happens to be a dynamic process, which has to take into account the changing physical situations in the basin concerned. Sustainability of a network is also dependent on budgetary allocation for the task. Thus, a hydrometric network that was optimum at a particular point of time may cease to be not so later. Considerations, as detailed above, call for periodic re-evaluation of the network, and make amends as needed. In the above context, this paper investigates the modern-day tools and techniques for hydrometric network optimization. The study shows that the issue can be tackled by an eclectic approach involving existing knowledge about the basin, empirical criteria and analytical methods. The paper elaborates the different criteria involved. The figure delineates a schematic showing diverse methods/ criteria used for network optimization. Problems and prospects associated with identifying an optimal hydrometric network for a basin are illustrated with the help of a real life river basin in Maharashtra, namely Upper Bhima basin up to Ujjani site. The standard criteria for network optimisation are detailed; and how such criteria are important for the case study brought out.|
|ISSN:||0975-2412 (Online); 0771-7706 (Print)|
|Appears in Collections:||BVAAP Vol.21(2) [December 2013]|
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.