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EHSMu: a New Ecohydrological Streamflow Model to Estimate Runoff in Urban Areas

Author

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  • Elena Cristiano

    (University of Cagliari)

  • Roberto Deidda

    (University of Cagliari)

  • Francesco Viola

    (University of Cagliari)

Abstract

A conceptual lumped ecohydrological streamflow model (EHSMu) is presented as a promising tool to simulate runoff in urban catchments. The model, based on the interaction between a soil bucket and two linear reservoirs, enables also evapotranspiration and aquifer recharge to be estimated. Notwithstanding its minimalism, EHSMu describes interactions among soil moisture dynamics, hydrological fluxes and ecological processes. The model was calibrated and validated within two densely urbanized sub-basins in Charlotte (US). A Monte Carlo procedure is used to investigate the efficiency of random sets of 8 model parameters. Results show the high model performance (NSE = 0.72). The influence of land use change is evaluated, by varying the imperviousness and crop coefficients. Synthetic experiments show that increasing urbanization triggers a linear decrease in evapotranspiration and aquifer recharge, while it increases the fast runoff. An opposite response is achieved by installing vegetation with higher potential evapotranspiration, which would contribute to the actual evapotranspiration making up 50–55% of the total water balance.

Suggested Citation

  • Elena Cristiano & Roberto Deidda & Francesco Viola, 2020. "EHSMu: a New Ecohydrological Streamflow Model to Estimate Runoff in Urban Areas," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(15), pages 4865-4879, December.
    • Handle: RePEc:spr:waterr:v:34:y:2020:i:15:d:10.1007_s11269-020-02696-0
    DOI: 10.1007/s11269-020-02696-0
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    References listed on IDEAS

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    1. Ahmed Mohammed Sami Al-Janabi & Badronnisa Yusuf & Abdul Halim Ghazali, 2019. "Modeling the Infiltration Capacity of Permeable Stormwater Channels with a Check Dam System," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 33(7), pages 2453-2470, May.
    2. María Bermúdez & Victor Ntegeka & Vincent Wolfs & Patrick Willems, 2018. "Development and Comparison of Two Fast Surrogate Models for Urban Pluvial Flood Simulations," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(8), pages 2801-2815, June.
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    Cited by:

    1. Jing Peng & Lei Yu & Xiang Zhong & Tiansong Dong, 2022. "Study on Runoff Control Effect of Different Drainage Schemes in Sponge Airport," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 36(3), pages 1043-1055, February.

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