A tale of Mexico's most exploited—and connected—watersheds: the Basin of Mexico and the Lerma‐Chapala Basin

Abstract

Water management policies and their impacts for both the Basin of Mexico and the Lerma-Chapala basin-where nearly 25% of Mexico's inhabitants are found-are described. This work shows that the prevailing water management policy has been the augmentation of water supply and neither policies have focused on water savings nor management of water demand. The effects of the large extraction rates on both basins have caused drying-up of streams due to drawdown rates that reach 2.5 m/year with an associated land subsidence in different cities in these basins. Water management in Mexico needs to change from a water supply approach to a water efficiency approach, where water needs to be efficiently used. Water management will only improve when policies consider both technical and social perspectives.

Vertical datum transformation grids for Mexico

“…In comparison, the differences found in the CONUS range from −40 cm to +150 cm 17 , with negative values on the U.S. east coast that increase westwards, reaching their maximum values www.nature.com/scientificdata www.nature.com/scientificdata/ www.nature.com/scientificdata www.nature.com/scientificdata/ on the Rockies. It should be mentioned that the differences used in this work are static-as both NGVD29 and NAVD88 are-and that the effects of seismic uplift or subsidence caused by heavy groundwater extraction in central Mexico 31 are not considered.…”