Telangana receives 50% excess rainfall during water year 2020-21

Hyderabad, Oct 16: Telangana has received 50 per cent excess rainfall during the water year 2020-21 (up to September 30, 2020) as against the normal rainfall during the same period.

The state as a whole received 1078.3 mm rainfall  till September 30,2020 as  against the normal rainfall of 720.4 mm, the state Ground water department said in its report here on Friday.

The southwest monsoon contributed 79 percent of normal rainfall while  14 percent contributed by northeast monsoon and rest by other seasons in the State.

Out of 33 districts in the state, 27 received excess rainfall while 6 received normal rainfall and no district received deficit rainfall.

Out of 589 mandals, 427 received excess rainfall (+20 % and above to normal) while  146 received normal rainfall (-19 to +19 %) and 16 received deficit rainfall (-20 % to -59 %), mostly falling in Adilabad, Nirmal, Nizamabad, Asifabad and Suryapet districts.

It observed that Nirmal district received -14  per cent normal rainfall and Wanaparthy district received +150  per cent excess rainfall.

Large Excess (+60 %) rainfall is more prevalent in the south western and central eastern part of the State and in the rest of the area, excess and normal rainfall is prevalent, the report revealed.

During September 2020, a total of 1216 wells were monitored , the report stated that the minimum and maximum depth to water level varies from 0.01 meters below ground level (m bgl) at Gollacherla village of Dornakal Mandal in Mahabubabad district and Meenuguvanipally village of Devarkadara Mandal in  Mahabubnagar district and maximum of 53.11 m bgl in piezometer at Khudabhakshpally village of Marriguda Mandal in Nalgonda District.

The state average water level during September 2020 was 5.38 m bgl as compared to 9.85 m bgl during the same period in 2019, showing a rise of 4.47 m.

The dynamic change in groundwater storage during the season is estimated at 622 TMC in comparison with May month water levels (up to September 2020).

Out of 589 mandals, 35 mandals are showing deep water levels ( >20m) and out of these 35 mandals, 7 mandals are showing further declining in water levels (covering 10 piezometers) mostly in Medak, Bhadradri, Nizamabad, Sangareddy and Bhupalpally in comparison with September-2019 water levels.

The maximum decline (16.48 m) is observed at Dammapeta Mandal of Bhadradri district while fise is observed in 31 Piezometers (covering 26 mandals of Bhadradri, Bhupalpally, Kamareddy, Khammam, Medchal, Medak, Nalgonda, Nizamabad, Rangareddy, Sangareddy, Siddipet and Yadadri) when compared to September 2019 water levels.

it is observed that these deep water level mandals received normal rainfall up to September 2020 during this water year.

Dynamic change in groundwater storage during the season is estimated at 622 TMC in comparison with May 2020 water levels (up to September 2020) and during September month there is a net increase of 104 TMC in the groundwater.

In Kaleshwaram Lift Irrigation Project (KLIP) command area, <10 m bgl water levels increased by 6121 km 2 during September 2020 as compared to September 2019 and deep water levels area reduced by 37 per cent during the same period, the report added.

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