Calculation of a water budget and delineation of contributing sources to drainflows in the western San Joaquin Valley, California

Multi-criteria optimization of a regional spatially-distributed subsurface water flow model

“…1C). On-farm drainage systems consist of parallel networks of perforated drain laterals, typically 1.8-2.7 m below the surface, and spaced horizontally from 30 to 180 m apart (Fio, 1994). The main source of irrigation water is surface water originating from the Sacramento Valley in northern California.…”

Estimation of a water budget for 1972-2000 for the Grasslands Area, central part of the Western San Joaquin Valley, California

“…These differences are most likely because they focused on only 2 years and used more detailed surface-water delivery and crop acreage data. The 1989 water budget for Panoche DD for this current study and the one developed by Fio (1994) are presented in table 8. The surface-water delivery estimate of this study is slightly lower than that of Fio (1994).…”

“…The 1989 water budget for Panoche DD for this current study and the one developed by Fio (1994) are presented in table 8. The surface-water delivery estimate of this study is slightly lower than that of Fio (1994). The values for groundwater pumpage and unmet crop demand, after accounting for effective precipitation, are the same.…”

“…Water-use studies conducted in this area include those of Burt and Katen (1988), Ayars and Schrale (1989), Gronberg and Belitz (1992), Belitz and others (1993), Fio (1994), Irrigation Training and Research Center (1994), Westlands Water District (1996, 2004), and Summers Engineering (2002. Burt and Katen (1988) analyzed the results of on-farm irrigation-system evaluations in the Westside Resource Conservation District, which is contiguous with the Westlands WD.…”

“…Belitz and others (1993) used the results of their study as inputs to a numerical ground-water flow simulation. Fio (1994) used a steady-state ground-water flow model to calculate a water budget for the Panoche DD for 1988 and 1989. The irrigation-water application rates of Ayars and Schrale (1989) were used in the model.…”