Impacts of San Joaquin Valley Drainage-Related Policies on State and National Agricultural Production

  • Gerald L. Horner
  • Stephen A. Hatchett
  • Robert M. House
  • Richard E. Howitt

Abstract

The chapter links National and State agricultural policy models with a regional agricultural production and ground-water hydrology model to track the effects of environmental and commodity policies. Results indicate that a policy which would eliminate subsurface drainage disposal would not significantly effect the amount of agricultural production within the 10-year time horizon assumed in the analysis. A 20-percent decrease in the demand for cotton is projected to decrease total irrigated acreage by 20 percent but subsurface drainage water is projected to double. This phenomenon is explained by decreased unconfined ground-water pumping which serves to reduce perched ground-water tables. The two policy scenarios illustrate the importance of unconfined ground-water pumping and the spatial allocation of surface water supplies in reducing the production of subsurface drainage, if disposal is restricted.

Keywords

Income Marketing 

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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Gerald L. Horner
    • 1
  • Stephen A. Hatchett
    • 2
  • Robert M. House
    • 3
  • Richard E. Howitt
    • 4
  1. 1.Agricultural EconomistDavisUSA
  2. 2.CH2M HILLUSA
  3. 3.USDA-ERSUSA
  4. 4.University of CaliforniaDavisUSA

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