Glossary of technical terms used
1. Safe area: Area categorized as SAFE from the groundwater resources point of view, based on the latest groundwater resources assessment carried out jointly by CGWB and State groundwater organizations. 2. Semi-critical area: Area categorized as SEMI-CRITICAL from the groundwater resources point of view, based on the latest groundwater resources assessment jointly by CGWB and State groundwater [...] Read more
Outline of hydro-geological report for obtaining No Objection Certificate for industries
1. Brief about the proposed project giving location details, coordinates, google/ toposheet maps, etc. demarcating the project area. 2. Groundwater situation in and around the project area, including water level, quality data and maps, and quality issues, if any. In the case of mines, groundwater conditions in both core and buffer zone should be described. [...] Read more
Guidelines for construction of piezometers and monitoring of groundwater levels and quality
Piezometer is a borewell/tubewell used only for measuring the water level by lowering a tape/sounder or automatic/digital water level measuring equipment. It also takes a water sample for water quality testing whenever needed. General guidelines for the installation of piezometers are as follows: The piezometer is to be installed/constructed at the minimum distance of 50 [...] Read more
Annual water audits by the industries
Water audit is a systematic process of objectively obtaining a water balance by measuring water flow from the site of water withdrawal or treatment, through the distribution system, and into areas where it is used and discharged. Conducting a water audit involves calculating water balance and use and identifying ways to save water. (Annual water [...] Read more
Is cgwa NOC mandatory?
NOC of Groundwater withdrawal from CGWA or State Groundwater Authority is mandatory for all Industries and Infrastructure projects. CGWA has made a panel of Accredited Consultants who understand the matter technically, administratively, and the applicable laws. Everybody who has to take permission to draw Groundwater is advised to avail services of the Accredited Consultant. The [...] Read more
Guidelines for abstraction of saline ground water
Detailed Guidelines for Abstraction of Saline Ground Water Water having above EC above 5000 µ siemens/cm at 250C is Saline Water. Any user desirous of utilizing saline groundwater is permitted to extract saline ground water and will be exempted from payment of ground water abstraction / restoration charges. However, all such users need to have [...] Read more
Guidelines for Bulk water suppliers
Guidelines for Ground Water abstraction for bulk water supply As per the new guidelines, all those users abstracting ground water and using it for supply as bulk water supplies through private tankers will now mandatorily seek No Objection Certificate for ground water abstraction. Documents to be submitted with the application i. Proof of ownership of [...] Read more
Why do we get sufficient groundwater in one place and not much in another?
The occurrence and distribution of groundwater are controlled primarily by the geology of the area and the quantum of recharge received by the existing aquifer formations. Thus the alluvial tracts of river valleys and the coastal plains containing alternative deposits of sand and clay of varying thickness are rich in groundwater. Regions underlain by hard [...] Read more
What are the factors that control groundwater flow through an aquifer?
Water first enters an aquifer through gravity-induced downward movement (percolation), but it also flows in a lateral direction within an aquifer. This flow can occur due to the dip (slope) of the aquifer or artificial conditions induced within the aquifer, such as pumping or recharging. Natural groundwater flow through an aquifer is relatively slow and [...] Read more
