River gauge levels

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The Tidmarsh gauge level has been adjusted by subtracting 100cm.

River gauge levels (daily max)

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The Tidmarsh gauge level has been adjusted by subtracting 100cm.

Groundwater levels (daily max)

Monthly Rain Totals - Yattendon

Total rainfall each month, with historical averages

Rain statistics have been compiled since 2002.

River gauge - alert levels (cm)

Flood Alert Flood Warning
Gauge / Alarm 1 2 3 4
Frilsham 44 48 59 62
Bucklebury 55 65 72 80
Tidmarsh 145 156 170 190
Pangbourne 75 78 110 140
Sulham 30 40 75 106

Alert level definitions

Alarm Definition Action
1 River levels are rising Monitoring and Forecasting Duty Officer starts monitoring
2
Flood Alert
River levels are at bankfull Flood Alerts issued (for whole length of the river) if forecast is for this level to be exceeded.
3 River levels are getting near to flood warning Consider 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 low Flooding possible Flooding likely Highest observed
Ridgeway Down 104 132 135 139
Gibbet Cottages 106 128 130 133
Hodcott 103 118 120 122
Saltbox 92 103 105 106

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).