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Q: Which survey technique is used to measure the depth of water bodies?
  • A. Hydrographic surveying
  • B. Aerial surveying
  • C. GPS surveying
  • D. Topographic surveying
Correct Answer: Option A - Hydrographic survey– Hydrographic survey deals with bodies of water for purpose of navigation, water supply, harbour works or for the determination of mean sea level. The work consist in measurement of discharge of streams, marking topographic survey of shores and banks, taking and locating sounding to determine the depth of water and observing the fluctuations of the ocean tide.
A. Hydrographic survey– Hydrographic survey deals with bodies of water for purpose of navigation, water supply, harbour works or for the determination of mean sea level. The work consist in measurement of discharge of streams, marking topographic survey of shores and banks, taking and locating sounding to determine the depth of water and observing the fluctuations of the ocean tide.

Explanations:

Hydrographic survey– Hydrographic survey deals with bodies of water for purpose of navigation, water supply, harbour works or for the determination of mean sea level. The work consist in measurement of discharge of streams, marking topographic survey of shores and banks, taking and locating sounding to determine the depth of water and observing the fluctuations of the ocean tide.