1.46m - highest level in these records (January 2003)..... 1.36m - 2014 maximum level reached on on 10 February, Cookham village cut off by road..... 1.24m - in 2014 the water on Spade Oak Reach road was too deep for cars when the river reached this level.....1.18m - at this level Sutton Road at Widbrook Common flooded in 2014..... 1.12m - when the river rose this high in 2014 the A4094 north of Cookham bridge flooded...... 1.00m is the level when the Moor Road (B4447 west of Cookham High Street) started to flood in 2013 and in 2014..... 0.60m - the normal range at Cookham Lock is 0 to 0.60m, flooding is possible above 0.60m.
gov.uk publishes a live map of English and Welsh river levels. Or for a different presentation go to the gaugemap site.
The local river status for boaters, and the flow rate of the Thames is shown at the Maidenhead Rowing Club river status page. The Environment Agency publishes river conditions for boaters along the whole River Thames.