Active System Management for drainage networks and river systems (Case studies of Flow and Flood forecasting systems around the world)

Gutierrez Andres, J. (2019) Active System Management for drainage networks and river systems (Case studies of Flow and Flood forecasting systems around the world). In: IWA-ASPIRE 2019, 31 October to 2 November 2019, Hong Kong.

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Abstract

Uptake of Active System Management (ASM) has been slow despite increasing evidence of the potential benefits that it can bring to water decision makers. ASM has been in various stages of implementation for a number of years, with a number of utilities (water companies) performing pilot studies to assess their benefits. However, the slowness in the uptake of ASM techniques is the result of a number of ‘blockers’, including, limited awareness of the potential benefits, the perception that its implementation is complex and risky, the perceived cost of its implementation, and the data requirements for the system. While coming from a UK perspective this paper will address typical blockers, using illustrations of available ASM techniques and examples of their use and demonstrate their applicability in a global context. It will describe a road map explaining the development process for ASM, which can be applied to help address a range of operational problems and customer requirements. The paper will present a balanced view of the available tools for system development. Data requirements will be discussed, in considering the types of observed and forecast data needed to support ASM, and the methods of enabling reliable and high quality live data feeds. A significant advantage of ASM is its trend for using continuous and spatial rainfall records rather than using design rainfall when developing system models. Continuous rainfall records permit a better understanding of the catchment as they allow for antecedent conditions to be used as well as acknowledging that a defined return period event does not necessarily sit in isolation from other events; spatial rainfall data present a clear picture of the variability of rainfall across the catchment. ASM models are implicitly continuous simulations with each forecast run saving a state that it used to initialise subsequent forecast runs. Some examples that demonstrate the key applications and benefits of ASM will be presented (including real cases studies in countries like USA, UK, Malaysia and China): Forecasting and mitigation of CSOs; Forecasting and mitigation of flooding (for both urban and rural catchments); Safe management of multi-purpose spaces (which will be flooding during extreme events); Water resources applications (Flow forecasting systems for dam releases); Managing flows to WWTW through better use of inherent network capacity rather than costly development of new infrastructure; Identifying locations where system performance is suboptimal, such as blockages, sedimentation, and cross connections. This presentation will argue that actively managing systems in this way can offer significant positive operational, financial, environmental, customer service and planning outcomes.

Item Type: Conference or Workshop Item (Paper)
Additional Information: 8th IWA-ASPIRE Conference
Subjects: Water > General
Divisions: Water
Depositing User: Unnamed user with email i.services@hrwallingford.com
Date Deposited: 02 Apr 2020 09:54
Last Modified: 26 May 2020 15:19
URI: http://eprints.hrwallingford.com/id/eprint/1362

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