Wanganui clinched the single sculls women's title and Whakatane the men's equivalent.
The Bay stamped their supremacy in the double sculls, quad and eight.
Webb said they were mixed crews of a boy and a girl in the double, two males and females in the quad and four each of both sexes in the eight.
The Bay coxed four of Morgan Davies, Duncan McErlich, Joe Terry and Liam harvey with coxswain Sheldon Paio are in today's A finals.
He felt it was a good performance from all the clubs.
"There is obviously a strength of numbers from Aramoho Wanganui and Hawke's Bay so they'll feature most but all the clubs will be represented."
Invercargill, Gisborne, Rotorua, Horowhenua, Porirua, Wellington, Whakatane, Taupo, Auckland and Clifton Rowing Club, from Waitara near New Plymouth, are among the other regions competing.
However, the Hawke's Bay Cup for the club that accrues the most points, is likely to be a two-horse run between the hosts and Aramoho Wanganui.
Last year Hawke's Bay finished 41 points ahead of Aramoho Wanganui.
"We've had a full range of events for novices right through to the Masters and corporate teams," Webb said.
More than 200 rowers, including scores of visitors, have besieged the river. The Bay club has 110 members at the regatta.
Two Bay engineering companies - Haden and Custance versus Aon Insurance - will compete in the last race in today's finals.
In a corporate race in Wanganui for the Jury Cup, Haden and Custance were runners-up to Aramahoe Wanganui in a five-team competition.
Aon Insurance settled for fourth place but today only two teams will compete.
Bay novice girls have high expectations as well after some serious training.
