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May 16, 2026Water Resources ResearchOpen Access

A Hybrid Empirical and Conceptual Model for Improving the Representation of Reservoirs With Limited Data in Hydrological Models

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Authors

YCYanan ChenYZYi ZhengXCXiming Cai

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Overview

Randomized trial evaluates a new reservoir operation model to enhance hydrological simulations, suggesting improved data efficiency.

Key Points

  • This study aims to develop and evaluate a hybrid model for reservoir operations that minimizes data needs while improving performance.
  • Developed C+GDROM, a hybrid empirical and conceptual model based on GDROM for reservoirs.
  • Evaluated performance on 256 U.S. reservoirs under data-scarce conditions and with limited in situ data.
  • Included purpose-specific variants: Flood Control Model and Irrigation Model.
  • C+GDROM General Model significantly outperformed existing models in daily release and storage simulations (no in situ data).
  • Calibration with limited in situ data (2 years) improved the performance of purpose-specific models.
  • The improvements were due to lower data dependence and the effective use of conceptual storage regulation curves.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a080af2a487c87a6a40cf74https://doi.org/10.1029/2025wr041958
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