The act provides for adjudication of disputes relating to waters of inter-state rivers and river valleys.
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/inter-state-water-disputes-act-1956
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/ministry-water-resources
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-disputes
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/interstate-disputes
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india