The Silt and Sedimentation Survey Sub-division is headed by Research Officer (Assistant executive Engineer), which is functioning under the Chief Research Officer, Technical Services Division, Krishnarajasagara. This sub division is equipped with the Navitronic NS 415 bathymetry survey grade Eco sounder, Leica MX 9250 DGPS reference Station, Leica MX 420 DGPS Mobile Station, sound velocity profiler SVP 15 along with the necessary accessories like FRP Boat with arrangements for the bathymetry survey, Navisoft Survey software, data loggers, display units for live display of conducting the Integrated Bathymetry Surveys (IBS) for reservoirs and rivers.

About IBS Survey:

Integrated Bathymetric System enables the collection and study of the data on the depth and bottom topology of reservoir / rivers. The primary application of this system is in the reservoir sedimentation survey. This helps in the study of reservoir capacity figures which are functions of depth, depth contours, and bottom topology which has changed over a period of time.

Main Objective:

• To Assess the total capacity of reservoir at FRL.
• To assess the water spread areas at different water storage levels using software provided with IBS at the level at which the survey was conducted.
• Supplement the water spread areas for the uncovered levels using the appropriate technique.
• Compare the results of the Present study with that of the Pre- impoundment survey.
• Evaluate the present water storage capacity of reservoir at different water levels and estimate the difference in storage capacities with comparison to the pre-impoundment surveys