The actual ET values of the irrigated fields in the study area varied from year to year in a way that was consistent with field reports and other independent data sets such as the seasonal maximum NDVI and output from an irrigation supply/demand water balance model. The 2003 seasonal actual ET of the study area was much higher than the rest of the studied years, and about 20 percent higher than the average of the 5 years. This was in agreement with published reports [14] and news sources stating that 2003 precipitation appeared to have broken the sequence of preceding consecutive dry years in Afghanistan.