The wet weather caused problems for Fieldays staff yesterday as they were forced to drain the lake in the centre of the Mystery Creek site because of rising water levels.
A hose was connected and the water was pumped down the middle of one of the site's main thoroughfares to a nearby drain, flooding the pathway for punters.
Fieldays chief executive Jon Calder said both of the lakes on the site were nearly overflowing yesterday morning.
But despite the rain, the event was going really well.
"The visitor numbers have been OK. Probably the best part of the day has been getting out there and talking to the exhibitors.
"There have been some really good sales despite the weather and despite visitor numbers being down."
Calder said the only on-site activity the rain had disrupted was the tractor pull but he was confident the competition organisers would catch up today and tomorrow.
"Our operations and logistics are pretty refined now, with 46 years of experience."
Friday is traditionally the busiest day of the Fieldays and Calder was expecting a big crowd in today.
"We're definitely not unhappy.
"With what we were facing on the opening morning at 6am with gale-force winds, the team and staff of volunteers have done a great job."
At 2pm yesterday, there were 25,000 visitors on site, up on Wednesday's number of 21,353 for the day.
Fieldays was an opportunity to get a range of information in one place for dairy farmer Andrew Johnston of Ngutunui, near Pirongia.
"Predominantly we look at the exhibitors. There's a few compliance issues coming up - changes that we want to know information about - and it's good to have it all here in one place," Johnston said.
He was going to check out milk-cooling equipment and high on his list for catchups were bankers, Fonterra and RD1.