Citation:

Remesh, R., L. Kalin, Mohamed M. Hantush, M. Rezaeinzadeh, AND C. Anderson. Challenges Calibrating Hydrology for Groundwater-Fed Wetlands: a Headwater Wetland Case Study. ENVIRONMENTAL MODELING AND ASSESSMENT. Baltzer Science Publishers BV, Bussum, Netherlands, 25:355-371, (2020). https://doi.org/10.1007/s10666-019-09684-8

Impact/Purpose:

The methods investigated in this study can be used to navigate similar flow calibration challenges in other groundwater dominant watersheds which can be very useful tool for managers and modelers alike.

Description:

This study aims to adapt the Soil and Watershed Assessment Tool (SWAT), a ubiquitously used watershed model, for groundwater dominated surface waterbodies by accounting for recharge from the aquifers. Using measured flow to a headwater slope wetland in Alabama’s coastal plain region as a case study, we present challenges and relatively simple approaches in using the SWAT model to predict flows from the draining watershed and relatively simple approaches to model groundwater upwelling. SWAT-simulated flow at the study watershed was limited by precipitation, and consequently, simulated flows were several times smaller in magnitude than observed flows. 

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