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Category: water management

Using ensemble forecasts to inform risk-based operations of a reservoir in Northern California

Using ensemble forecasts to inform risk-based operations of a reservoir in Northern California

Contributed by:  Chris Delaney, Sonoma County Water Agency; John Mendoza, Sonoma County Water Agency; Brett Whitin, California Nevada River Forecast Center; Rob Hartman, Consultant Lake Mendocino is a reservoir located in Mendocino County, California, about 110 miles north of the City of San Francisco. This small 144 million cubic meter reservoir (Figure 1) releases water into the Russian River and provides both flood protection and water supply to downstream communities. Lake Mendocino is cooperatively managed by 2 government offices: the…

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Bridging the gap between forecasters and operational hydrologists: an OzEWEX summer institute project

Bridging the gap between forecasters and operational hydrologists: an OzEWEX summer institute project

Contributed by Melanie Loveridge, Bex Dunn and Yiling Liu How often do we assume that we understand the users’ needs, which may later be proven untrue? At the recent OzEWEX Australian Climate and Water Summer Institute – held in Canberra, Australia – we got the chance to bridge the gap between forecasters and operational hydrologists. Fifteen of us were invited to the OzEWEX summer institute, which provides early career researchers the chance to see the current and emerging data and…

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Hydropower management in Brazil and water forecasts – Interview with Alberto Assis dos Reis

Hydropower management in Brazil and water forecasts – Interview with Alberto Assis dos Reis

Alberto is an engineer and hydrologist at Cemig, a Brazilian power company headquartered in Belo Horizonte, the capital of the state of Minas Gerais, and is currently starting a PhD work at the Federal University of Minas Gerais (UFMG). His PhD project involves also collaboration with three other organizations in Europe, strongly involved in Hepex: Irstea (France), Deltares (The Netherlands) and ECMWF (UK). He was recently visiting these organizations and, when he came to France, I took the opportunity to…

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Which scales matter for water resources management?

Which scales matter for water resources management?

Contributed by Andreas Hartmann, Axel Bronstert, Bettina Schaefli The discussion about which scale is the most relevant for water resources management is an increasingly important debate of hydrological modelling principles over the last decade. The session “(Ir‑)relevant scales in hydrology: Which scales matter for water resources management?” convened at this year’s EGU General Assembly 2017 tried to put some new light (and fire) into this ongoing debate. Solicited speakers representing the plot scale, hillslope and catchment scale, and the large-scale…

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Short-term optimization of a tropical hydropower reservoir operation using deterministic and ensemble forecasts

Short-term optimization of a tropical hydropower reservoir operation using deterministic and ensemble forecasts

Contributed by Fernando Fan, member of the LSH Research Group Guest Columnist Team As we said in previous posts, hydropower is the most important source of electricity in Brazil and it is subject to the natural variability of water yield. Its extremes lead to the risks of power production deficits during droughts, and to safety issues in the reservoir and downstream river reaches during flood events. One building block of the proper management of hydropower assets is the short-term forecast…

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