Hydrological Impact of Chaersen Reservoir on Downstream Runoff in Northeast China

A study by Weifei Yang of Jilin University quantifies the impact of Chaersen Reservoir on downstream hydrology. The research shows a 14% reduction in average streamflow at Zhenxi Station and a 60% decrease in the recession coefficient 'a'. The analysis uses a pre-post comparison method and control basins to isolate the reservoir's effect from climate change.

Use Cases

• Modeling reservoir-induced changes to downstream streamflow based on the reported 14% reduction.
• Analyzing alterations in baseflow recession parameters based on the reported 60% decrease in coefficient 'a'.
• Studying the shift in log(|dQ/dt|) vs. log(Q) relationships at low flow stages described in the results.
• Evaluating the performance of traditional linear parameterization methods for master recession curves as discussed.

Strengths

• Employs a controlled study design using two upstream sub-watersheds to exclude climate change influence.
• Provides specific quantitative results, including a 14% streamflow reduction and a 60% decrease in recession coefficient 'a'.
• Focuses on a concrete case study of Chaersen Reservoir with clear geographical context in Northeast China.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to a single case study.

Provenance

Source

Weifei Yang, Jilin University

Collection Method

Pre-post comparison method using hydrological data, likely from stream gauges.

Geography

Chaersen Reservoir and downstream Zhenxi Station in Northeast China