Designing Instream Flows to Satisfy Fish and Human Water Needs

Cardwell, Hal E.; Jager, Henriëtte I.; Salé, Michael J.

doi:10.1061/(asce)0733-9496(1996)122:5(356)

Cited by 71 publications

(51 citation statements)

References 12 publications

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“…One of the advantages of the approach presented by Sale et al is that its solutions are found within a feasible space of storage reservoir operation. In a similar approach, Cardwell et al (1996) combined two objectives: maximizing the habitat capacity for juvenile Chinook salmon, as estimated by WUA (Figure 6), and minimizing water supply shortfalls.…”

Section: Problems That Target Fish Population Viabilitymentioning

confidence: 99%

Sustainable reservoir operation: can we generate hydropower and preserve ecosystem values?

Jager

Smith

2008

River Research & Apps

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Hydroelectric power provides a cheap source of electricity with few carbon emissions. Yet, reservoirs are not operated sustainably, which we define as meeting societal needs for water and power while protecting long-term health of the river ecosystem. Reservoirs that generate hydropower are typically operated with the goal of maximizing energy revenue, while meeting other legal water requirements. Reservoir optimization schemes used in practice do not seek flow regimes that maximize aquatic ecosystem health. Here, we review optimization studies that considered environmental goals in one of three approaches. The first approach seeks flow regimes that maximize hydropower generation, while satisfying legal requirements, including environmental (or minimum) flows. Solutions from this approach are often used in practice to operate hydropower projects. In the second approach, flow releases from a dam are timed to meet water quality constraints on dissolved oxygen (DO), temperature and nutrients. In the third approach, flow releases are timed to improve the health of fish populations. We conclude by suggesting three steps for bringing multi-objective reservoir operation closer to the goal of ecological sustainability: (1) conduct research to identify which features of flow variation are essential for river health and to quantify these relationships, (2) develop valuation methods to assess the total value of river health and (3) develop optimal control softwares that combine water balance modelling with models that predict ecosystem responses to flow. Published in

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Section: Problems That Target Fish Population Viabilitymentioning

confidence: 99%

Sustainable reservoir operation: can we generate hydropower and preserve ecosystem values?

Jager

Smith

2008

River Research & Apps

Self Cite

230

153

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“…Ecological deterioration and aggravated water scarcity are often attributed to poor planning and unreasonable management of scarce water resources, in which situation integrated water resources management are necessary (Davis 2007). Moreover, disputes between various water users have intensified drastically as society seeks to satisfy increasing water demands while sustaining ecological integrity (Cardwell et al 1996;Symphorian et al 2003;Chen et al 2005;. Water rights institution and management reforms with policies and institutions are considered fair and efficient for water allotment Wang et al 2009), because well-defined water property rights can ensure effective allocation of scarce water resources and that ecological water requirements are met in the basin scale (Livingston 1995;Schlüter et al 2005;Chun et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Improvement of Duration-Based Water Rights Management with Optimal Water Intake On/Off Events

Wang

Zhu

Zheng

2015

Water Resour Manage

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Water rights management modeling was considered the useful measure to ensure efficient water resources allocation and to avoid intensifying conflicts over water rights. Regarding to the two major patterns of water rights across the world, namely, quantitative water rights (QWR) and duration-based water rights (DWR), the corresponding measures are fastidious. Since QWR was established to set water entitlements instead of DWR in Heihe River Basin, China, the disability of usual DWR tool, managing water diversion by water intakes closing (WIC) during a certain period, has arisen increasingly. The historical data also reflected the low reliability of DWR in allocating water resources quantitatively without modeling guidelines. Aimed at the challenge, a modeling framework and a mixed integer optimization model (MIOM) combing QWR objectives and DWR tools were developed, by which the optimal schemes in Pareto frontier were found to improve the water intake on/off events, including WIC stages, duration days, and starting date through long term series probability analysis and historical data. Results showed that the reliability of DWR allocation was enhanced and WIC duration was reduced significantly compared with current regulation. Scenario analyses indicated that MIOM was powerful for assisting DWR tool to manage QWR and the proposed framework was able to manage water rights efficiently in comparable basins.

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“…Relevant research has been carried out in the past decades on considering the in-stream flow requirements in conventional reservoir operations (Cardwell et al 1996;Labadie, 2004;Castelletti et al, 2008). Homa et al (2005) summarized that most of the studies proposed to release a minimum constant flow in reservoir operation to assure the basic requirements of stream ecosystems.…”

Section: Introductionmentioning

confidence: 99%

“…Homa et al (2005) summarized that most of the studies proposed to release a minimum constant flow in reservoir operation to assure the basic requirements of stream ecosystems. Cardwell et al (1996) presented a model with focus on protecting various typical fish and derived 12 different optimal policies on * Corresponding author. E-mail: qchen@rcees.ac.cn minimum flow release.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the operation of the Qingshitan Reservoir in the Lijiang River for multiple human interests and quasi-natural flow maintenance

Chen

Duan

Han

et al. 2012

Journal of Environmental Sciences

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For reservoir operation, maintaining a quasi-natural flow regime can benefit river ecosystems, but may sacrifice human interests. This study took the Qingshitan Reservoir in the Lijiang River as a case, and developed an optimization model to explore a trade-off solution between social-economic interests and nature flow maintenance on a monthly base. The objective function considered irrigation, cruise navigation and water supply aspects. An index of flow alteration degree was proposed to measure the difference between the regulated discharge and the natural flow. The index was then used as an additional constraint in the model besides the conventional constraints on reservoir safety. During model solving, different criteria were applied to the index, representing various degrees of alteration of the natural flow regime in the river. Through the model, a relationship between social-economic interests and flow alteration degree was established. Finally, a trade-off solution of the reservoir operation was defined that led to a favorable social-economic benefit at an acceptable alteration of the natural flow.

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Designing Instream Flows to Satisfy Fish and Human Water Needs

Cited by 71 publications

References 12 publications

Sustainable reservoir operation: can we generate hydropower and preserve ecosystem values?

Sustainable reservoir operation: can we generate hydropower and preserve ecosystem values?

Improvement of Duration-Based Water Rights Management with Optimal Water Intake On/Off Events

Optimizing the operation of the Qingshitan Reservoir in the Lijiang River for multiple human interests and quasi-natural flow maintenance

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