CASE STUDY: THE OJOS NEGROS VALLEY, BAJA CALIFORNIA, MEXICO.

• About 1500 Liters/second [23,775 gpm] are currently pumped from the Ojos Negros aquifer for use in irrigated agriculture.

• The water table has decreased about 40 meters [131 ft] since about 1970, when pumping started.

• The wetlands (cienagas) (see map below, dated 1864) that gave its name to the valley have disappeared.

• To date, about 10% of the original wetland area [prior to depletion] remains.

• Regulation is now in place to avoid further lowering of the water table.