Monnow at Grosmont, Rhosllwyn


Current River Level: 0.605m, steady

Within the usual range for this location

Current level recorded at 6:30am, Saturday 4th December GMT

Change from previous measurement: 0.000m
(recorded at 4:30am, Saturday 4th December GMT)

The usual range of the Monnow at Grosmont, Rhosllwyn is between 0.47m and 1.48m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the Monnow at Grosmont, Rhosllwyn over the past 12 months has been between 0.18m and 1.06m. It has been between these levels for at least 151 days in the past year.

The highest level ever recorded at the Monnow at Grosmont, Rhosllwyn is 4.62m, reached on Saturday 26th October 2019 at 3:15pm.

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

  • Monitoring Station: Grosmont, Rhosllwyn
  • Watercourse: Monnow
  • Nearest Town/Village: Grosmont
  • Local Authority: Monmouthshire
  • Ceremonial County: Gwent
  • Coordinates: 51°55'10"N 2°50'59"W (51.919462,-2.849825)
  • OS Grid: SO4165024890 (,)
  • Mapcode (Local): GBR FD.P9Q7
  • Mapcode (Global): VH78X.K08W
  • Open Location Code: 9C3VW592+Q3
  • Maidenhead Locator System: IO81nw80
  • Natural Resources Wales Location ID: 4015
  • Natural Resources Wales Gauge ID: 4015
  • Operational Area: Monnow
  • Catchment Area: Wye MC
  • UK Hydrometric Area: Wye (Hereford)

Nearby Monitoring Locations

Other monitoring locations on the Monnow
Monnow Map
There are no other monitored rivers nearby
Taming the Flood by Jeremy Purseglove

Nearby Flood Warning Locations

River Monnow and tributaries in England
River Monnow and tributaries in England

No current or recent warnings.

Long term graphs will work better if you rotate your fondleslab into landscape mode.

Past Week

Long Term

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.

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