A multi-model approach for analysing water balance and water-related ecosystem services in the Ouriyori catchment (Benin)

Quentin Fiacre Togbévi*, Aymar Yaovi Bossa, Yacouba Yira, Kwasi Preko, Luc Ollivier Sintondji, Martine van der Ploeg

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Freshwater supply remains limited in West Africa due to lack of operational governance frameworks. In this study, the Water flow and balance Simulation Model (WaSiM) and the Soil and Water Assessment Tool (SWAT) were applied in the Ouriyori catchment (14.5 km2, Benin) to assess hydrological ecosystem services (HES) in terms of service flow and service capacity using the ecosystem accounting framework. The modelling exercises indicated satisfactory goodness-of-fit coefficients greater than 75% with an absolute bias of less than 25%. The HES capacity was in general higher than the HES flow for crop and household (surface/groundwater) water supplies, indicating that the catchment can potentially supply more water under optimal storage and management conditions. Positive and negative shifts in service capacities of crop water and household supplies were observed over the simulation period. These significant results can support sustainable interventions in securing water and food productions through increasing HES flow and capacity.

Original languageEnglish
Pages (from-to)2453-2465
Number of pages13
JournalHydrological Sciences Journal
Volume65
Issue number14
DOIs
Publication statusPublished - 25 Oct 2020

Keywords

  • Benin
  • catchment
  • hydrological ecosystem services
  • multi-modelling
  • SWAT
  • WaSiM

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