River gauge levels

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The Tidmarsh gauge level has been adjusted to remove the gauge base value by subtracting 100cm.

River gauge levels (daily max)

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The Tidmarsh gauge level has been adjusted to remove the gauge base value by subtracting 100cm.

Groundwater levels (daily max)

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Most recent Groundwater and River Level forecast

River gauge - alert levels (cm)

Flood AlertFlood Warning
Gauge / Alarm1234
Frilsham44485962
Bucklebury55657280
Tidmarsh145156170190
Pangbourne7578110140
Sulham304075106

Alert level definitions

AlarmDefinitionAction
1River levels are risingMonitoring and Forecasting Duty Officer starts monitoring
2
Flood Alert
River levels are at bankfullFlood Alerts issued (for whole length of the river) if forecast is for this level to be exceeded.
3River levels are getting near to flood warningConsider issuing a Flood Warning (for just the Warning Area associated with the relevant gauge)
4
Flood Warning
River level is at property level (first to Flood in Warning Area)Flood Warning issued (for just the Warning Area associated with the relevant gauge) if forecast is for this level to be exceeded.

Groundwater - alert levels

Gauge / Level AOD (m)Typical lowFlooding possibleFlooding likelyHighest observed
Ridgeway Down104132135139
Gibbet Cottages106128130133
Hodcott103118120122
Saltbox92103105106

Notes:

  • Figures have been rounded to the nearest metre (observations 2000-2014).
  • Saltbox OBH is located north of Compton where the River Roden rises.
  • Ridgeway Down, Gibbet Cottages and Hodcott are nearer the source of the River Pang.
  • Data provided by a resident of Compton (not the EA).