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SwedenBondary - Siemianówka water level
Reservoir, Zbiornik Siemianówka, Podlaskie, Poland
Right now
Very low for mid-October
Water level
- Flow
- 0.70 m³/s
History
202020212022202320242025
What this means
Water is short at Bondary - Siemianówka: the latest reading of 1.61 m is far below normal for mid-October.
It is 1.39 m below the flood level of 3.00 m. That puts it 0.46 m below the median of 2.07 m for mid-October, based on 11 years of readings. A year ago it stood at 1.80 m (−0.19 m).
The 30-day range is 1.61 m – 1.62 m.
Many reservoirs reach their low point of the year in autumn, before winter rain and snow start the refill.
Compared with 11 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 2.07 m0.46 m below the median for this date
- Normal for this date
- 1.76 m – 2.65 m8 years in 10 fall in this range (11 years of records)
- Same day last year
- 1.80 m−0.19 m
- Lowest and highest in 30 days
- 1.61 m – 1.62 m
Boating and fishing at Bondary - Siemianówka
At low levels, launching can mean a long walk or a closed ramp, and shallow points stick out further than charts suggest.
Weather at the gauge
The forecast is not available right now.
Map
Other gauges on the Zbiornik Siemianówka
| Gauge | Level | Compared with normal | 24 hours | Updated |
|---|---|---|---|---|
| Bondary - SiemianówkaReservoir, Zbiornik Siemianówka | 1.53 m | Low | 46 min ago |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| NarewkaRiver gauge | 0.95 m | Low | 8.7 km | |
| NarewRiver gauge | 1.37 m | Very high | 15 km | |
| GródekRiver gauge, Supraśl | 1.66 m | Normal | 18 km | |
| TrześciankaRiver gauge, Rudnia | 2.88 m | Normal | 22 km | |
| BiałowieżaRiver gauge, Narewka | 0.75 m | Low | 27 km | |
| NowosiółkiRiver gauge, Supraśl | 1.75 m | Very high | 30 km | |
| PloskiRiver gauge, Narew | 1.85 m | Very low | 35 km | |
| ChrabołyRiver gauge, Orlanka | 1.14 m | Normal | 38 km |
Questions and answers
How does Bondary - Siemianówka compare with last year?
It is 0.19 m lower than on the same day last year, when the reading was 1.80 m.
How often is Bondary - Siemianówka updated?
Several times an hour. New readings from Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB) appear here as they arrive. Latest: Oct 16, 2026, 11:20 PM GMT+2.
What is the water level of Bondary - Siemianówka today?
On Oct 16, 2026, 11:20 PM GMT+2, the water level was 1.61 m. Very low.
Is the level of Bondary - Siemianówka normal?
Very low for mid-October. Compared with 11 years of daily readings for this time of year.
How often is this data updated?
Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB) publishes a new reading every hour. This page refreshes within minutes of each update.
Where does this data come from?
The values come directly from Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB), the official operator of this gauge, and are published under the IMGW-PIB Regulamin udostępniania danych (free reuse with source attribution; high-value data per EU 2023/138). We do not estimate or model live values.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB)
- Station code
imgw:152230110(Agency page)- Coordinates
52.94030, 23.74890(WGS84)- Vertical datum
- PL-EVRF2007-NH
- Gauge zero
- 135.091 m
- km
- 441.72
- Update interval
- every hour
- Licence
- IMGW-PIB Regulamin udostępniania danych (free reuse with source attribution; high-value data per EU 2023/138). Źródłem pochodzenia danych jest Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy. Dane IMGW-PIB zostały przetworzone.
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
Water level stage | 1.61 m | 2026-10-16 21:20 | Provisional |
Flow discharge | 0.70 m³/s | 2026-10-16 21:10 | Provisional |
Download
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How to cite
Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB): Bondary - Siemianówka (imgw:152230110). Accessed October 16, 2026 via Nivelmap, https://nivelmap.com/en/poland/podlaskie/bondary-siemianowka-152230110
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer