Pen Mill water level
River gauge, River Yeo, Somerset, United Kingdom
Right now
Very low for mid-October
Water level
History
20252026
What this means
At 0.11 m, the River Yeo at Pen Mill is far below normal for mid-October.
The median for mid-October is 0.19 m, based on 21 years of readings, so the river level is 0.08 m below typical. On the same day last year the reading was 0.13 m, a difference of −0.02 m. The lowest reading on record is 0.00 m (March 16, 1990).
It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 0.10 m and 0.12 m.
Autumn rain usually starts to lift rivers again after the summer low.
Compared with 21 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 0.19 m0.08 m below the median for this date
- Normal for this date
- 0.12 m – 0.63 m8 years in 10 fall in this range (21 years of records)
- Normal range
- 0.12 m – 3.10 m
- Same day last year
- 0.13 m−0.02 m
- Lowest and highest in 30 days
- 0.10 m – 0.12 m
- Lowest and highest in 12 months
- 0.11 m – 2.36 m
- Highest on record
- 4.57 mDecember 28, 1979
- Lowest on record
- 0.00 mMarch 16, 1990
On the river at Pen Mill
Low, clear water makes fish wary, and anglers often do better early and late in the day. For canoeists, shallow riffles mean scraped hulls and the odd portage.
Flood warnings for the area come from the Environment Agency.
About the River Yeo
The River Yeo, also known as the River Ivel, is a tributary of the River Parrett in north Dorset and south Somerset, England.
Text and image from Wikipedia and Wikimedia Commons, licensed under CC BY-SA.
Weather at the gauge
Rain in the last 3 days: 1.4 mm. Rain that falls upstream can take hours or days to show up at a river gauge.
Forecast: Open-Meteo
Map
Other gauges on the River Yeo
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Sherborne LakeRiver gauge, River Yeo | −0.78 m | No reference yet | −0.01 m | 7.4 km |
| IlchesterRiver gauge, River Yeo | 0.08 m | Normal | −0.01 m | 8.5 km |
| Huish Episcopi Pumping StationRiver gauge, River Yeo | 1.67 m | Normal | −0.02 m | 17 km |
| YeofordRiver gauge, River Yeo | 0.18 m | Normal | ±0 | 80 km |
| LapfordRiver gauge, River Yeo | 0.36 m | Very low | ±0 | 85 km |
| Collard BridgeRiver gauge, River Yeo | 0.39 m | Normal | +0.01 m | 100 km |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| ChetnoleRiver gauge, River Wriggle | 0.11 m | Normal | ±0 | 8.3 km |
| Weston BampfyldeRiver gauge, River Cam | −0.01 m | Lowest on record | ±0 | 9.4 km |
| ChiselboroughRiver gauge, River Parrett | 0.05 m | Normal | ±0 | 11 km |
| Long LoadRiver gauge, Witcombe Bottom Main Drain | 7.41 m | Very high | +0.01 m | 13 km |
| Gaw BridgeRiver gauge, River Parrett | 0.24 m | Normal | ±0 | 13 km |
| LovingtonRiver gauge, River Brue | 0.07 m | Very low | ±0 | 16 km |
| Huish Episcopi Pumping StationRiver gauge, Longload Main Drain | 1.30 m | Normal | +0.02 m | 17 km |
| HookeRiver gauge, River Hooke | 0.12 m | Very low | ±0 | 17 km |
Questions and answers
Is the River Yeo at Pen Mill higher than last year?
No, it is 0.02 m lower than on the same day last year, when the reading was 0.13 m.
What is a normal level for the River Yeo at Pen Mill in mid-October?
The median for mid-October is 0.19 m. In 8 years out of 10 the reading falls between 0.12 m and 0.63 m, based on 21 years of records.
Is the river level the same as the depth of the water?
No. The reading is measured from a fixed zero mark at the gauge, so 0.11 m on the gauge does not mean the water is that deep.
What is the water level of Pen Mill today?
On 18 Oct 2026, 05:15 BST, the water level was 0.11 m. Steady over the last 24 hours.
Is Pen Mill rising or falling?
Steady over the last 24 hours.
Is the level of Pen Mill normal?
Very low for mid-October. Compared with 21 years of daily readings for this time of year.
What is the highest water level ever recorded at Pen Mill?
The highest level on record is 4.57 m on December 28, 1979. The lowest is 0.00 m on March 16, 1990.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- Environment Agency
- Station code
ea:52117(Agency page)- Coordinates
50.94350, -2.60865(WGS84)- Vertical datum
- station datum
- Update interval
- every 15 minutes
- Licence
- Open Government Licence v3.0. Contains Environment Agency data licensed under the Open Government Licence v3.0
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 0.11 m | 2026-10-18 04:15 | Provisional |
Download
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How to cite
Environment Agency: Pen Mill (ea:52117). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/somerset/pen-mill
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