River Levels
River Levels

River Blackwater at Ower GS

Current River Level

2.310m

At 8:45pm, Thursday 28th March GMT

Above normal for this location

Steady, no change from previous measurement at 8:30pm, Thursday 28th March GMT

Flood Warning Areas Covering Here

Landford to Wade Bridge on the River Blackwater

Flood Warning

River Blackwater

Flood Alert

Other Nearby Flood Warning Areas

Lower Test

Flood Alert

River Test at Romsey and Testwood

No current or recent warnings.

Rushington and Eling on the Bartley Water

No current or recent warnings.

Seven Day Level Chart

Long Term Level Chart

Darker blue shaded areas on long term data indicate maximum and minimum levels for the date (you may need to zoom in closer to see them).

Long term data may have gaps where the API data was not available.

Download long term data as csv

Note: CSV data will include any outlying values that have been ignored by our graphing system as probably erroneous (eg, because they are ridiculously high compared to the values either side of them). It is your responsibility to filter these out if necessary.

Important! If you are planning to retrieve the csv data automatically, you must read and understand the limitations on the data and its availability.

Location and Technical Data

  • Monitoring Station: Ower GS
  • Watercourse: River Blackwater
  • Nearest Town/Village: Romsey Extra
  • Local Authority: Test Valley
  • Ceremonial County: Hampshire
  • Coordinates: 50°57'18"N 1°32'2"W (50.955026,-1.534134)
  • OS Grid: SU3281817392 (432818,117392)
  • Mapcode (Local): GBR 75S.2XS
  • Mapcode (Global): FRA 76PL.64M
  • Open Location Code: 9C2WXF48+28
  • Maidenhead Locator System: IO90fw59
  • Environment Agency Location ID: E13291
  • Environment Agency Gauge ID: E13291-level-stage-i-15_min-mASD
  • River Levels Online ID: 9212
  • Water Information System ID: 151817001
  • Operational Area: Lower Test and Southampton Streams
  • Catchment Area: Test and Itchen
  • UK Hydrometric Area: Hampshire Rivers Group
  • Environment Agency Region: Southern
  • Datum Type: Above Stage Datum (ASD)

Please note: Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

The usual range of the River Blackwater at Ower GS is between 0.04m and 2.07m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Blackwater at Ower GS over the past 12 months has been between 0.06m and 1.03m. It has been between these levels for at least 151 days in the past year.

The highest level ever recorded at the River Blackwater at Ower GS is 3.26m, reached on Tuesday 24th December 2013 at 4:45am.

Note that this data may not take account of recent measurements, as we wait until a level has been verified by the Environment Agency before adding it to our records.

Nearby Monitoring Locations

There are no other monitoring stations on the River Blackwater

There are no other monitored rivers nearby

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