Fig. 2.

Irrigation pattern and its change over time. (A) Area classified as irrigated agriculture (in green) for 2001, based on the NDVI classification of irrigated pixels outside the monsoon season (at a 250-m² resolution), as described in Methods. The black dotted lines in A represent the position of the trunk of the canal and its main branch to the west. (B) Areas that have experienced the most pronounced variation in irrigation levels between 2001 and 2009. Specifically, areas in red correspond to those classified as irrigated in 2009 but nonirrigated in 2001 (see also SI Appendix, Figs. S8 and S9).