This wing is responsible for, collection, compilation, storage and retrieval of hydrological and hydro-meteorological data including water quality monitoring, formulation and issue of flood forecast on all major flood prone rivers and inflow forecasts for selected important reservoirs, providing guidance to States in technical matters on different aspects of river and flood management in the country and regulation of multipurpose reservoirs, river morphology studies, techno-economic appraisal of various flood management schemes received from the State Governments, providing advice to coastal states on issues related to coastal erosion problems including preparation of National Coastal Protection Project (NCPP) for Coastal Protection works, survey and investigation of water resources development projects in India and neighbouring countries, monitoring of schemes under Centrally Sponsored Command Area Development (CAD) Programme, Accelerated Irrigation Benefit Programme (AIBP), Revival and Restoration of Water Bodies etc through field units of RM Wing and international co-operation with neighbouring countries in the field of flood forecasting.

The Wing is headed by an engineering officer designated as Member (RM) with the ex-officio status of Additional Secretary to Government of India. The wing comprises of organizations headed by Chief Engineer and consisiting of various Directorates each headed by Directors. Below is the organization chart of RM wing