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212 Economic Survey 2021-22

Figure 19: Categorization of Ground Water Resource Assessment units across India, 2020

Safe
GW extraction < 70%

Semi Critical
GW extration 70-90%

Critical
GW extration 90-100%

Over Exploited
GW extraction >
Annually replenishable

Saline

Hilly Areas

No Data

Source: National Compilation on Dynamic Ground Water Resources of India, 2020
Reservoirs

6.29 Reservoirs are an important source of water resources for the country. However, they are
particularly prone to seasonality, and are greatly impacted by rainfall and temperature patterns.

Figure 20: Reservoir capacity and live storage (bcm)

180 Capacity at Full Reservoir Level
160
140 Current year 2021-22
Storage (BCM) 100 Previous year
120

80
(2020-21)
60
40 Last 10 years average
20
0
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May
Current Year (2021-22) Last Year (2020-21)
Last 10 years average Capacity at Full Reservoir Level
Source: India Water Resources Information System, Ministry of Jal Shakti