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Live levels from 1 monitoring station across Cornwall, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Bealsmill | 0.36 m 31m ago | Normal |
Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.
Contains OS data © Crown copyright and database rights 2026.
Streams and rivers with a gauge whose water joins the Inny above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
No gauged tributary joins the Inny above Bealsmill on the river map. Streams without a gauge are not counted here.
Below Bealsmill, its water next reaches Gunnislake, a gauge on River Tamar, 16.8 km by river downstream.
Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.
4 storm overflows are traced upstream of Bealsmill, the Inny’s lowest gauge on the river map: on the Inny itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Bealsmill: 394 spills over 6,346 hours in total, across all 4.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Inny includes the smaller streams that join it there.
Within 3 km of one of the Inny’s gauges in a straight line, but the river map cannot say whether their water reaches it.
1 other overflow within 3 km of these gauges is placed below the Inny’s lowest gauge or on another river, so not listed.
A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →
Live status: © South West Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.
Dated samples taken by the Environment Agency, not live readings. Results are published days to months after the sample is taken, and many points are sampled only a few times a year, or have not been sampled for years.
19 sampling points on the River Inny and the streams that join it above Bealsmill. 10 have a sample from the last 12 months; 10 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| River Inny upstream of Davidstow Creamery sewage treatment works | unnamed stream | 31 km | Last sampled 24 May 2021, before the imported period | |
| River Inny upstream of Drainage Pipe AT21 | unnamed stream | 31 km | Last sampled 5 Apr 2017, before the imported period | |
| River Inny downstream of Davidstow Creamery sewage treatment works | unnamed stream | 31 km | Last sampled 19 Jul 2018, before the imported period | |
| River Inny at Davidstow | River Inny | 30 km | 11 May 2026 · 5 months ago | Oxygen 97.2%Temp 10.9 °CpH 7.14Ammonia below 0.03 mg/l |
| River Inny upstream of Inny Vale Discharge | River Inny | 30 km | 27 Aug 2026 · 42 days ago | Oxygen 95.3%Temp 16.1 °CpH 7.5Ammonia below 0.03 mg/l |
| River Inny upstream of Creamery Discharge | River Inny | 28 km | 13 Aug 2026 · 56 days ago | Oxygen 100%Temp 16.4 °CpH 7.34Ammonia below 0.03 mg/l |
| River Inny downstream of Creamery Discharge | River Inny | 28 km | 27 Aug 2026 · 42 days ago | Oxygen 104.8%Temp 19.9 °CpH 8.02Ammonia below 0.03 mg/l |
| River Inny at Treglasta Bridge | River Inny | 27 km | Last sampled 31 Mar 2022, before the imported period | |
| West Carne Stream Prior to Penpont Water | unnamed stream | 25 km | Last sampled 4 Mar 2011, before the imported period | |
| Penpont Water at Trelyn Bridge | Penpont Water | 24 km | 18 May 2026 · 5 months ago | Oxygen 101.4%Temp 9.5 °CpH 6.48Ammonia below 0.03 mg/l |
| River Inny at St Clether Bridge | River Inny | 23 km | 27 Aug 2026 · 42 days ago | Oxygen 100.1%Temp 16.8 °CpH 8.37Ammonia below 0.03 mg/l |
| Penpont Water at Altarnun Bridge | Penpont Water | 21 km | Last sampled 4 Mar 2022, before the imported period | |
| Penpont Water at Strayer Park Bridge | Penpont Water | 15 km | 15 Sep 2026 · 23 days ago | Oxygen 98.2%Temp 16.4 °CpH 7.32Ammonia below 0.03 mg/l |
| River Inny upstream of A30 | River Inny | 13 km | 15 Sep 2026 · 23 days ago | Oxygen 98.6%Temp 16.6 °CpH 8.24Ammonia below 0.03 mg/l |
| River Inny at Two Bridges | River Inny | 13 km | Last sampled 4 Nov 2021, before the imported period | |
| Penpont Water at Two Bridges | Penpont Water | 13 km | Last sampled 6 Dec 2016, before the imported period | |
| River Inny at Trekelland Bridge | River Inny | 9.0 km | Last sampled 6 Dec 2016, before the imported period | |
| River Inny at Trecarrell Bridge | River Inny | 4.4 km | 27 Aug 2026 · 42 days ago | Oxygen 96.9%Temp 16.8 °CpH 7.99Ammonia below 0.03 mg/l |
| Gullacombe Stream at Pool End | unnamed stream | 4.0 km | 12 Aug 2026 · 57 days ago | Oxygen 98.9%Temp 14.9 °CpH 7.2Ammonia below 0.03 mg/l |
Distances are along the river to the gauge named. England's samples only.
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.
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