Your search found 4 records
1 Mutua, B. N.; Malano, H. M. 2001. Analysis of manual and centralised supervisory control operations to improve level of service: A case study of Pyramid Hill No 1 Channel, Victoria, Australia. Irrigation and Drainage Systems, 15(1):1-19.
Flow regulation ; Irrigation management ; Irrigation canals ; Irrigation operation ; Performance evaluation ; Indicators ; Water delivery ; Simulation ; Case studies / Australia
(Location: IWMI-HQ Call no: PER Record No: H028882)
2 Smakhtin, V. Y. 1999. Generation of natural daily flow time-series in regulated rivers using a non-linear spatial interpolation technique. Regulated Rivers: Research & Management, 15:311-323.
(Location: IWMI-HQ Call no: P 5884 Record No: H028963)
3 Smakhtin, Vladimir; Batchelor, A. L. 2005. Evaluating wetland flow regulating functions using discharge time-series. Hydrological Processes, 19:1293-1305.
(Location: IWMI-HQ Call no: IWMI 333.91 G000 SMA Record No: H028980)
(1.07 MB)
This paper describes a parsimonious approach for the evaluation of wetland hydrological functions, based on continuous observed streamflow records and flow duration curves. The functions evaluated are baseflow maintenance and flood attenuation, jointly referred to as flow regulation. The first step in this evaluation is to establish a reference hydrological condition. This condition is defined in terms of mean daily and instantaneous daily maximum flow time-series and their corresponding duration curves, assuming that there is no wetland in the catchment. Further steps include calculating the changes of various flow percentiles, caused by the presence of a wetland, detailed hydrograph analysis, baseflow analysis and analysis of changes in characteristics of continuous flow events above and below specified threshold discharges. The method is illustrated using the observed streamflow data in the catchment of the Rustenburg wetland in South Africa.
4 Cai, Xueliang; McCartney, Matthew; Smakhtin, Vladimir. 2012. Flow duration curve for evaluating ecosystem flow regulating functions in the Zambezi River Basin [Africa]. Paper presented at the 16th SANCIAHS National Hydrology Symposium, Pretoria, South Africa, 1-3 October 2012. 10p.
Water management ; Ecosystems ; Flow discharge ; Flow regulation ; River basins ; Wetlands ; Forests ; Hydrological factors ; Upstream ; Downstream ; Flooding ; Land cover ; Time series analysis / Africa / Zambezi River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H045717)
http://www.ru.ac.za/static/institutes/iwr/SANCIAHS/2012/documents/014_Cai.pdf
https://vlibrary.iwmi.org/pdf/H045717.pdf
https://vlibrary.iwmi.org/pdf/H045717.pdf
(1.10 MB) (1.11MB)
Wetlands and forests have strong effects on hydrological processes by changing the rate of evaporation, transpiration, and flow routing in a basin, which affects basin water management such as dam operations. This study aims to assess the flow regulating functions of wetlands and forests using a flow duration curve (FDC) approach. We firstly identify wetlands and forests which are gauged both upstream and downstream. Reference conditions were then established using nearby sub-watersheds that contain few/no wetlands/forests. By transferring reference flows to the target sites and comparing the FDCs for with and without wetland/forest conditions we then assess the hydrological impacts on flood attenuation and base flow maintenance. Results of a floodplain wetland suggest that it decrease flood flows and increase low flows. The extent of this function could be quantified which gives useful indications for water resources planning and management.
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