Disaster Management

North Eastern Space Applications Centre (NESAC) is actively participating in several activities under Disaster Management Support programme. The work for Landslide Hazard Zonation of Shillong-Silchar-Aizawl National Highway has been completed in collaboration with IIRS, Dehradun.

NESAC has also created digital database of three districts of Barak valley under Disaster Management System.

NESAC is a participating agency in the STORM (Severe Thunderstorm – Observation and Regional Modeling) coordinated by Dept of Science & Technology. Two pilot studies have been taken up on thunderstorm formation using Kalpana-1 satellite data.

Agricultural Drought Monitoring and Impact assessment in the NER:

This work was done as part of Disaster Management Support Programme (DMSP) of ISRO/NESAC in view of prevailing drought like scenario developed in NER during monsoon season of 2009. Weekly agricultural drought assessment was made based on the rainfall data available from IMD stations, ISRO/NESAC installed AWS and TRMM multi-sensor rainfall data.

Flood Early Warning System (FLEWS) – Pilot study:

This is an operational activity taken up by NESAC at the request of Govt. of Assam with support from all stake holders such as CWC, IMD, AWRD, Brahmaputra Board, NEC etc with Assam State Disaster Management Authority (ASDMA) as the major beneficiary and end user.

Under this activity, effort has been given to provide flood warning in district and revenue circle level with best possible lead time in order to enable the district administration to take well in advance action for relief, rescue and other flood mitigation measures. This activity was started as a pilot exercise for Lakhimpur district of Assam in 2009. Based on the success of 2009, few other districts of Assam namely Dhemaji (upper Assam), Nalbari, Barpeta and Baksa (lower Assam) has been taken up at the request of Govt. of Assam in 2010. Three barak valley districts of Assam are likely to be included in 2011 as pilot exercise. Overall success achieved as officially conveyed by user, in Lakhimpur and Dhemaji districts has been 60% in 2009 and 2010.

This particular service of flood early warning has been carried out with inputs from meteorology, hydrology and Remote Sensing and GIS in watershed scale. Prime services under this activity are early warning of flood in magnitude (severity), location (revenue circle/ group or cluster of villages) and probable time (within 12 to 24 hours range), High rainfall warning with location and time, post monsoon status of embankments in various flood causing rivers etc.

The Fixed / Transportable Wireless-in-Local-Loop (WLL) Very Small Aperture Terminal (VSAT) system and INSAT Mobile Satellite Service (MSS) Reporting Terminals (type C) are also acquired for deployment in disaster situations.