Modeling of Subsurface Tile Drainage using MIKE SHE

dc.contributor.author Zhou, Xiaobo
dc.contributor.author Helmers, Matthew
dc.contributor.author Qi, Zhiming
dc.contributor.department Agricultural and Biosystems Engineering
dc.date.accessioned 2022-03-22T22:42:48Z
dc.date.available 2022-03-22T22:42:48Z
dc.date.issued 2013
dc.description.abstract Accurate estimation of subsurface drainage flow is essential for effectively evaluating the performance of management strategies in tile-drained landscapes. The objectives of this study were to calibrate and validate MIKE SHE for simulating subsurface tile drainage flow in central Iowa and to evaluate the simulated impact of two specific management strategies on tile flow. The model was calibrated and validated using the measured daily drainage in a 15.2 × 38 m row-cropped plot during 2006-2009 with a split-sample method. Drainage time constant and macropore flow were found to be important in predicting drainage flow. The calibrated drainage time constant of 5.6 h was outside the recommended range, which might be attributed to the shorter response time of subsurface flow at the plot scale used in this study. The calibrated model showed a satisfactory performance in simulating daily tile drainage flow with Nash-Sutcliffe model coefficient values of 0.78 and 0.73 for the calibration and validation periods, respectively. The measured and predicted total drainage from 2006-2009 were 865 and 958 mm, respectively. The results suggest that MIKE SHE has potential for predicting tile drainage flows; guiding management decisions and for assessment of drainage design of water flow to downstream water bodies.
dc.description.comments This article is published as Zhou, Xiaobo, Matthew Helmers, and Zhiming Qi. "Modeling of subsurface tile drainage using MIKE SHE." Applied Engineering in Agriculture 29, no. 6 (2013): 865-873. DOI: 10.13031/aea.29.9568. Copyright 2013 American Society of Agricultural and Biological Engineers. Posted with permission.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/7vdXP42v
dc.language.iso en
dc.publisher American Society of Agricultural and Biological Engineers
dc.source.uri https://doi.org/10.13031/aea.29.9568 *
dc.subject.keywords water management
dc.subject.keywords drainage time constant
dc.subject.keywords macropore flow
dc.title Modeling of Subsurface Tile Drainage using MIKE SHE
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication 26a812e6-e6de-44ff-b7ea-d2459ae1903c
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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