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River Asker water levels

Live levels from 2 monitoring stations across Dorset, updated every 15 minutes.

2stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Jessop Avenue BridportBridport0.12 mASD 32m agoNormal—
East Bridge BridportBridport0.15 m 32m agoNormal—

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.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Asker 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 Asker above East Bridge Bridport on the river map. Streams without a gauge are not counted here.

Where the Asker goes

Below East Bridge Bridport, its water next reaches West Bay, a gauge on River Brit, 3.6 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.

Streams without a gauge

Named streams on the river map that flow into the Asker and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.

Storm overflows upstream

3 storm overflows are traced upstream of East Bridge Bridport, the Asker’s lowest gauge on the river map: on the Asker itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 3 not discharging
  • 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of East Bridge Bridport: 20 spills over 79 hours in total, across all 3.

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 Asker includes the smaller streams that join it there.

Above Jessop Avenue Bridport, the Asker’s highest gauge2 overflows
  • Lee Lane Pumping Station Not discharging
    Wessex Water · into River Asker · 1.3 km by river above Jessop Avenue Bridport · 2025: 15 spills, 67 h
  • Fishweir Fields PS Not discharging
    Wessex Water · into River Asker Via Sws · 1.1 km by river above Jessop Avenue Bridport · 2025: 3 spills, 12 h · reaches the river through a sewer, so where it enters is approximate
Between Jessop Avenue Bridport and East Bridge Bridport1 overflow

Near these gauges, connection not known

Within 3 km of one of the Asker’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • West Bay Sluices Not discharging bathing water
    Wessex Water · into Bridport Harbour(West Bay)(C) · 2.4 km from East Bridge Bridport in a straight line · discharges to the sea, an estuary or tidal water · 2025: 10 spills, 95 h

6 other overflows within 3 km of these gauges are placed below the Asker’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: © Wessex 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.

Water samples

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.

4 sampling points on the River Asker and the streams that join it above East Bridge Bridport, and below it. 2 have a sample from the last 12 months; 2 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Jessop Avenue Bridport River Asker 3 points, 2 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Mangerton Brook downstream of Mangerton MillMangerton River3.9 km1 May 2026 · 5 months agoOxygen 95.2%Temp 12.7 °CpH 8.25Ammonia below 0.03 mg/l
River Asker at BoarsbarrowRiver Asker2.2 km9 Sep 2026 · 29 days agoOxygen 89.3%Temp 13.5 °CpH 8.23Ammonia below 0.03 mg/l
Mangerton Brook at Hole House FarmMangerton River1.9 kmLast sampled 17 Jul 2015, before the imported period
Below East Bridge Bridport 1 point, 0 with samples
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Asker at BridportRiver Asker0.8 kmLast sampled 6 Apr 2017, before the imported period

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.