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Ground Water Level in Porumamilla Mandal
Latest groundwater level and trends for Porumamilla Mandal.
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Average of 5 monitoring wells.
5 of 5 expected wells reported Historical network: 6 wellsWhat does this mean?
April 2026 groundwater in Porumamilla Mandal averaged 10.65 m bgl. It was 4.93 m shallower than the same month last year. It was 14.23 m shallower than the recent historical reference. Improving direction. The trend is statistically significant.
How to read m bgl
Lower m bgl means shallower groundwater.
Higher m bgl means deeper groundwater.
What does m bgl mean?
How to read m bgl
Lower m bgl means shallower groundwater.
Higher m bgl means deeper groundwater.
Recent groundwater levels
Groundwater levels rise and fall through the year. We compare the same month across years when assessing change.
Lower m bgl means shallower groundwater. Gaps show months with no usable value.
Monthly data snapshot
| Month | Mean | Wells |
|---|---|---|
| April 2026 | 10.65 m bgl | 5 |
| March 2026 | No usable data | — |
| February 2026 | 6.75 m bgl | 5 |
| January 2026 | 5.12 m bgl | 5 |
| December 2025 | No usable data | — |
| November 2025 | 3.78 m bgl | 5 |
View more monthly data
| Month | Mean depth | Wells | Coverage |
|---|---|---|---|
| April 2026 | 10.65 m bgl | 5 | 100% |
| February 2026 | 6.75 m bgl | 5 | 83% |
| January 2026 | 5.12 m bgl | 5 | 83% |
| November 2025 | 3.78 m bgl | 5 | 83% |
| September 2025 | 14.78 m bgl | 5 | 83% |
| August 2025 | 14.99 m bgl | 4 | 67% |
| July 2025 | 15.37 m bgl | 4 | 67% |
| June 2025 | 13.68 m bgl | 4 | 67% |
| May 2025 | 19.17 m bgl | 5 | 83% |
| April 2025 | 15.88 m bgl | 4 | 67% |
| March 2025 | 12.84 m bgl | 4 | 67% |
| February 2025 | 11.69 m bgl | 4 | 67% |
Year on year comparison
- April 2026 mean
- 10.95 m bgl
- April 2025
- 15.88 m bgl
- Change
- 4.93 m shallower
- Status
- Improved
- Comparable wells
- 4
Historical reference
The current value below uses only wells with enough April history.
- Current mean for 4 comparison wells
- 10.95 m bgl
- Historical April mean
- 25.18 m bgl
- Difference
- 14.23 m shallower
- Reference period
- 2016 to 2025
- Years represented
- 9
Long term April trend
Improving direction. The trend is statistically significant.
- Period
- 2017 to 2026
- April observations represented
- 9
- Slope
- -4.438 m per year
- Equivalent
- -443.8 cm per year
- Statistical test
- p = 0.026
Where the measurements come from
Monitoring wells used for Porumamilla Mandal.
| Well | Location | Latest month | History |
|---|---|---|---|
| 20397APSEB Sub station | AkkalreddipalleShow coordinates15.1300, 79.0200 |
16.30 m bgl | 1 Nov 2015 to 1 Apr 2026 |
| 40072In the premises of ZP High School | GanugapentaShow coordinates14.8400, 79.0500 |
7.02 m bgl | 1 Nov 2013 to 1 Apr 2026 |
| 10417APSEB Substation | PorumamillaShow coordinates14.9970, 78.9900 |
12.36 m bgl | 1 Jul 2022 to 1 Apr 2026 |
| 30132APSEB Substation | PorumamillaShow coordinates14.9970, 78.9900 |
Not reported | 1 Jul 2022 to 1 Feb 2026 |
| 30133APSEB Substation | RajasahebpetaShow coordinates14.9850, 79.0300 |
9.46 m bgl | 1 Jul 2022 to 1 Apr 2026 |
| 40073In the premises of ZP High School | SiddavaramShow coordinates14.9400, 79.0300 |
8.10 m bgl | 1 Nov 2013 to 1 Apr 2026 |
Data confidence
Confidence is shown for each comparison.
View data quality details
View annual context
Annual values are shown for context. Partial years are marked by the number of months available.
| Year | Mean monthly depth | Months available |
|---|---|---|
| 2026 | 7.51 m bgl | 3 of 12 |
| 2025 | 13.02 m bgl | 10 of 12 |
| 2024 | 19.82 m bgl | 12 of 12 |
| 2023 | 11.64 m bgl | 11 of 12 |
| 2022 | 5.89 m bgl | 12 of 12 |
| 2021 | 5.53 m bgl | 12 of 12 |
| 2020 | 31.35 m bgl | 11 of 12 |
| 2019 | 50.26 m bgl | 12 of 12 |
| 2018 | 42.31 m bgl | 12 of 12 |
| 2017 | 42.59 m bgl | 12 of 12 |
| 2016 | 32.62 m bgl | 12 of 12 |
| 2015 | 37.83 m bgl | 12 of 12 |
About this data
Source: Andhra Pradesh Ground Water Department. Data made available through the National Water Data Portal (NWDP).
Groundwater depth is shown in m bgl. Lower values mean groundwater is closer to the surface.
Latest source date stored: 1 Apr 2026
Page refreshed: 30 Aug 2026
How we calculate
Year on year status compares the same calendar month. It uses wells present in both years where possible.
The historical reference uses the same month across recent years. The long term trend also uses the same month across years.
Missing values are not treated as zero. Invalid readings are excluded.