Studies by World Wildlife Fund (WWF-Pakistan) and National Institute of Oceanography Pakistan (NIOP) show seawater intrusion in the past 30 years has encroached over 1 kilometer inland.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wwf-niop-studies-show-seawater-intrusion-30-yr-invade-1km-inland
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-times-pakistan
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sindh
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sea-level-rise
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wwf
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-adaptation
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-erosion
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/deforestation