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

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

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Most recent Groundwater and River Level forecast

Total rainfall each month, with historical averages

Rain statistics have been compiled since 2002.

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

Alarm	Definition	Action
1	River levels are rising	Monitoring and Forecasting Duty Officer starts monitoring
2	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	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.

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).