Thursday's meeting at Wincanton has been abandoned due to a waterlogged track.
Clerk of the course Barry Johnson initially called an inspection for raceday morning after substantial overnight rain.
However, he brought that check forward to 12.30pm following further rain, before eventually calling the meeting off around 12 noon.
Johnson said: "We've had 34mm of rain since one o'clock and it's still raining.
"I have never seen it so wet. There is more rain forecast for Thursday and we have no chance of recovering in time for racing."
Officials at Hereford have also been forced to abandon their National Hunt fixture.
Clerk of the course Keith Ottesen announced a lunchtime inspection earlier this morning following persistent rain, and to make matters worse a culvert (a type of drain) that runs through the centre of the course has burst.
Ottesen said: "It's been getting worse and we're up to 27 millimetres of rain now. We weren't expecting anywhere near that amount."
He added: "Up to 7am we'd had 14mm but as it carried on raining all of the water from the surrounding areas and the water courses are culverted and can't cope with it all.
"We are flooded in parts because those water courses that take the water around the racecourse and underneath it have been breached. The ground everywhere is saturated and cannot take this amount of rain in such a short space of time."
28 July 2014Quick picks off Galway rivals
Lion could roar in Champion Stakes
Time out for Carpenter
Beckett considers Gesture gameplan
PJA hits out at ERA Cosgrave case
Pitt ponders Sir Stewards' run
Bird in full flight for Nassau
Chopin team wait on softer ground
Beacon leads Hannon trio
Toormore on Goodwood mission
Options open for Approval
Star duo head Sussex field
Pallasator states case for Ebor
Custom a cut above
Harty doubles up in Galway feature
Munich Mission impossible
Jinx on a high in France
Cox plays it cool with Kodi
Girl given Lowther target
Burke looking to Curragh
Hanagan hails Taghrooda
Toormore drops in class for Lennox
27 July 2014Beacon shines over Molecomb rivals
Miss skips Galway for Goodwood
Tag crowned queen of Ascot
Muthmir delivers in Dash
Metal proves International star
Sheikh pounces for late score
Kingman poised for showdown
Kleo hits top gear for Cumani
Dettori strikes on Osaila
Bear grills Winkfield rivals
Yorkshire Oaks target for Volume
26 July 2014Taghrooda queen of Ascot
Elleval bids for Pomfret prize
Noble primed for German mission
O'Meara duo going International
Tag team happy to have a go
Telescope reaches for stars
Euro chasing dollar signs
Estimate given Goodwood entry
Pique Sous out for season
Secret chasing York success
Reason aiming to deliver in Dash
Remote on comeback trail
25 July 2014Hughes misses Newmarket rides
Bill seeks International acclaim
Tag team have a crack at George
Telescope has record in sights
Nicholls pays tribute to Business
Flintshire misses George date
Hills reveals positive test horse
Kennedy floored on Leopardstown bow
Candy sweet on hot-shot Alonsoa
Big guns in Irish Champion frame
Farraaj sidesteps York return
Classy entries for Champagne
Stars align for Sussex showdown
Kiyoshi dips in grade for Valiant
Gosden waits on Eagle call
Horsted heads International runners