Simulating water table response to proposed changes in surface water management in the C-111 agricultural basin of south Florida

•Demonstrates benefits of detailed field scale water table simulations for flood protection.•Micro-topography has stronger influence on groundwater flooding than distance from canal.•Pro-longed saturation of the root zone resulting in shortening of the growing season is predicted.•Canal drawdown is...

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Bibliographic Details
Published in:Agricultural water management 2014-12, Vol.146, p.185-200
Main Authors: Kisekka, I., Migliaccio, K.W., Muñoz-Carpena, R., Schaffer, B., Boyer, T.H., Li, Y.
Format: Article
Language:English
Subjects:
Agricultural and forest climatology and meteorology. Irrigation. Drainage
Agricultural management
Agronomy. Soil science and plant productions
Biological and medical sciences
Canals
Canal–aquifer interactions
Elevation
Flooding
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Groundwater
Groundwater flooding
Mathematical models
MODFLOW
Root zone
Roots
Saturation
Water table
Water tables
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Summary:•Demonstrates benefits of detailed field scale water table simulations for flood protection.•Micro-topography has stronger influence on groundwater flooding than distance from canal.•Pro-longed saturation of the root zone resulting in shortening of the growing season is predicted.•Canal drawdown is effective as a pre-storm flood protection water management technique. As part of an effort to restore the hydrology of Everglades National Park (ENP), incremental raises in canal stage are proposed along a major canal draining south Florida called C-111, which separates ENP from agricultural lands. The study purpose was to use monitoring and modeling to investigate the effect of the proposed incremental raises in canal stage on water table elevation in agricultural lands. The objectives were to: (1) develop a MODFLOW based model for simulating groundwater flow within the study area, (2) apply the developed model to determine if the proposed changes in canal stage result in significant changes in water table elevation, root zone saturation or groundwater flooding and (3) assess aquifer response to large rainfall events. Results indicate the developed model was able to reproduce measured water table elevation with an average Nash–Sutcliffe >0.9 and Root Mean Square Error
ISSN:0378-3774
1873-2283
DOI:10.1016/j.agwat.2014.08.005