Regional Economics and Management in Closed Drainage Basins
How to manage salinity and drainage issues in a semi-arid region that receives surface water imports, is subject to a saline, high water table, and does not have an outlet for salts and drainage water? Options include source control, land retirement, water table controls, and drainage water reuse. The analyses suggest that agricultural production in such a region is sustainable over decadal periods. High levels of productivity and profitability can be maintained over policy-relevant time horizons, but as salts are imported into the region and if groundwater reuse just re-circulates salts in the system over reasonable time scales, it is physically certain that reuse cannot be relied upon forever because the water table salt concentration eventually will increase, absent external drainage.
KeywordsWater Table Hydraulic Head Source Control Deep Percolation High Water Table
- Belitz, K., Phillips, S. P., & Gronberg, J. M. (1992). Numerical simulation of ground-water flow in the central part of the western San Joaquin valley, California (Open-File Report 91–535). Sacramento: U.S. Geological Survey.Google Scholar
- Bertsekas, D. P. (1976). Dynamic programming and stochastic control. New York: Academic.Google Scholar
- Johnston, W. R., Tanji, K. K., & Burns, R. T. (1997). Drainage water disposal. In C. A. Madramootoo, W. R. Johnston, L. S. Willardson (Eds.), Management of agricultural drainage water quality 13 (pp. 91–101). Rome: United Nations Food and Agriculture Organization. ftp://ftp.fao.org/agl/aglw/docs/idp61e.pdf. Accessed June 2012.
- Kan, I., Schwabe, K. A., & Knapp, K. C. (2002). Microeconomics of irrigation with saline water. Journal of Agricultural and Resource Economics, 27, 16–39.Google Scholar
- Knapp, K. C. (1999). Economics of salinity and drainage management in irrigated agriculture. In R. W. Skaggs & J. van Schilfgaarde (Eds.), Agricultural drainage (American Society of Agronomy monograph 38, pp. 1261–1284). Madison: American Society of Agronomy.Google Scholar
- Knapp, K. C., & Baerenklau, K. A. (2006). Groundwater quantity and quality management: Agricultural production and aquifer salinization over long time scales. Journal of Agricultural and Resource Economics, 31(3), 616–641.Google Scholar
- Knapp, K. C., Dinar, A., & Letey, J. (1986). On-farm management of agricultural drainage water: An economic analysis. Hilgardia, 54(4), 1–31.Google Scholar
- Posnikoff, J. F., & Knapp, K. C. (1996). Regional drainwater management: Source control, agroforestry, and evaporation ponds. Journal of Agricultural and Resource Economics, 21(2), 277–293.Google Scholar
- SJVDP (San Joaquin Valley Drainage Program). (1990). A management plan for agricultural subsurface drainage and related problems on the west side. Final Report by the U.S. Department of the Interior and California Resources Agencies. Sacramento, CA, USA.Google Scholar
- van Genuchten, M. T. (1987). A numerical model for water and solute movement in and below the root zone. Riverside: U.S. Department of Agriculture, ARS, U.S. Salinity Laboratory.Google Scholar
- van Genuchton, M. T., & Hoffman, G. J. (1984). Analysis of crop salt tolerance data. In I. Shainberg & J. Shalhevet (Eds.), Soil salinity under irrigation (Ecological studies series 51). New York: Springer.Google Scholar
- Zeitouni, N. (1991). Efficient management of groundwater quality. Natural Resource Modeling, 5, 293–320.Google Scholar
- Zeitouni, N., & Dinar, A. (1997). Mitigating negative water quality and quality externalities by joint management of adjacent aquifers. Environmental and Resource Economics, 9, 1–20.Google Scholar