In 1972-74, jetties were built to improve navigability at the mouth of the Guadiana Estuary. In response, the broad historical delta has collapsed and a new ebb delta has formed off the mouth. CIMA is monitoring the morphological evolution of this feature based on bathymetric data which have been collected yearly since 2014.
Bathymetric maps of the modern ebb-deltas are available for the following years: 1969 - 1973 - 1977 - 1982 - 1986 - 1988 - 1992 - 1995 - 2001 - 2003 - 2005 - 2010 - 2012 - 2014 - 2015 - 2016 – 2017 – 2018 – 2019 – 2020 - 2021
