A duck race on the River Witham on Saturday raised £800 for local charities.
About 200 people were in Wyndham Park to see the race which the club says was a huge success.
John Asher, of the club, said: “We are very pleased with the turnout and the amount we have raised.”
The proceeds will go to charities supported by Rotary. The Scouts, who helped to sell tickets will receive £100. Among the local causes Rotary is aiming to help is the stroke unit at Grantham Hospital. The unit was using a machine on loan for its patients, but Rotary hopes to buy a machine for the unit to keep permanently.
The winners of the duck race were Charlie Thompson, K. Mason and Lisa Cullington who win £50, £25 and £15 respectively.