LiDAR survey: TRS plans to convince Opposition

October 07, 2015 12:00 am | Updated 05:49 am IST - HYDERABAD:

The Light Detection and Ranging (LiDAR) survey taken up by the Water and Power Consultancy Services (India) Ltd – WAPCOS – at the behest of the Government of Telangana as part of the latter’s plans for re-designing of a few ongoing and new irrigation projects in the State is likely to be completed in about a week’s time.

The LiDAR equipment mounted on to a helicopter belonging to GMR Group, services of which have been hired by WAPCOS in the absence of the organisation having its own chopper, has already completed the survey of a majority of areas in the Godavari Basin in the State with the help of German technicians.

The survey taken up on September 4 has been hindered by unfavourable weather conditions during the first fortnight of the month, but gained momentum in the fourth week.

Chief Engineer of Pranahitha-Chevella lift irrigation project Hari Ram Bhookya told The Hindu that the survey has already been completed in Kaleshwaram-Indravathi, Indravathi-Kanthanapally, Medigadda-Yellampally, Yellampally-Mid Manair, Inchampally-Mid Manair (Jaggayyapalli), Mid Manair-Konda Pochamma, Gandhamalla, Baswapur and Nizamsagar reservoir stretches. The survey being done with LiDAR scanner with a minimum range of 800 meters, inertial measurement unit (IMU)-Aero Control Unit and real-time Differential GPS unit would be taken up in Dummugudem-Kanthanapally, SRSP-Yellampally and a few other stretches over the next few days, the CE explained.

Meanwhile, sources in the Irrigation Department stated that the LiDAR survey would include topographic and hydro-graphic survey of proposed locations of reservoirs, command area and the project site area.

The area of LiDAR survey includes proposed Kaleshwaram barrage site and the proposed alignment of water conductor system. The survey was done at upstream and downstream of the proposed Kaleshwaram barrage, 28 km upstream of the barrage axis with 10 km width (about 280 sq km) 2 km downstream of the barrage axis with 10 km width (about 20 sq km) and water conductor system survey along the proposed system from Kaleshwaram barrage to Mid-Manair reservoir with a width 1.25 km on either side of the centreline of alignment for 160 km length (about 400 sq km), the sources explained.

The government is hopeful of convincing people and Opposition parties about the necessity to redesign the projects with the help of scientific data, the sources said.

Aerial survey likely to be over in a week

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