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    Author(s): Ying Ouyang; G. Feng; J. Read; T. D. Leininger; J. N. Jenkins
    Date: 2016
    Source: Water Science and Technology: Water Supply
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: View PDF  (2.0 MB)

    Description

    Although more on-farm storage ponds have been constructed in recent years to mitigate groundwater resources depletion in Mississippi, little effort has been devoted to estimating the ratio of on-farm water storage pond size to irrigated crop land based on pond metric and its hydrogeological conditions.  In this study, two simulation scenarios were chosen to determine such a ratio as well as to investigate pond hydrological processes using a STELLA (Structural Thinking, Experiential Learning Laboratory with Animation) model, one scenario with and the other without using pond water for irrigation for a typical pond that represented the average conditions in East Mississippi.  Simulation results showed that pond water level changed moderately for conditions without using its water for irrigation, whereas such level changed dramatically for conditions with using its water for irrigation. A reasonable ratio of pond size to irrigated soybeans land was 1:18 if the irrigation rate was 2.54 cm d-1 (or 1 in d-1) and the low limit of the pond water level was drawn to near zero (0.08m). For the ratio of 1:18, our simulations further revealed that a 1-ha soybeans land could save about 542m3 groundwater each year.  This study suggests that the STELLA model is a useful tool for estimating the ratio of pond size to irrigated crop land.

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    Citation

    Ouyang, Y.; Feng, G.; Read, J.; Leininger, T. D.; Jenkins, J. N. 2016. Estimating the ratio of pond size to irrigated soybean land in Mississippi: a case study. Water Science and Technology: Water Supply.

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    Keywords

    Mississippi, on-farm water storage pond, pond hydrology, ratio, STELLA model

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