Piezometers and Groundwater Level Monitoring:
Piezometers are specialized wells or boreholes designed to measure groundwater levels. They play a crucial role in assessing the availability and quality of groundwater.
The Central Ground Water Board (CGWB) in India actively monitors groundwater levels across the country through a network of monitoring stations.
Here are some key points about groundwater level monitoring using piezometers:
National Ground Water Monitoring Network (NHNS):
CGWB operates a network of approximately 25,000 monitoring stations known as the National Hydrograph Network Stations (NHNS).
These stations include both open dug wells and purpose-built bore/tube wells equipped with piezometers.
The monitoring is conducted four times a year (in March/April/May, August, November, and January).
CGWB has also introduced Digital Water Level Recorders (DWLRs) with telemetry systems under the National Hydrology Project (NHP) for high-frequency monitoring.
