Alexandra won the five-round tournament with 19 points (a differential of plus-32) from Elmwood (Canterbury) 17 (plus-2) and Northland club Kensington 16 (plus-6).
It was the first time an Otago women's team had won the interclub sevens. Fairfield has won the men's event twice.
"It feels great," Linley O'Callaghan, the skip of the Alexandra pair, told the Otago Daily Times from Palmerston North. "It is just wonderful, almost unbelievable."
Alexandra led after the first day, but trailed Elmwood before the fifth and last round after losing all three games in the morning session yesterday.
"We had a team talk during the lunch break and told ourselves that we just had to win every game in the afternoon," O'Callaghan said.
"They were close losses in the morning and we knew we could come back and win."
The Alexandra team rose to the occasion and won all its final-round games to become the champion women's club in the country.
Imela Holdom won the singles when she beat Audrey Stevenson (Paraparaumu Beach) 21-16 and the pairs combination of Lyn Somerville and O'Callaghan beat Robyn Martin and Dorothy Fisher (Taupo) 26-15.
The fours team of Elaine Cushnie, Faye McKnight, Alma Crosby and skip Myra Beatty was the best performed of the Alexandra team and won four of its five games.
It convincingly won the final round game against the Riverside club, of Gisborne, 28-13.
A key game in the final round was when Kensington beat Elmwood 22-19 to make sure the prize went to Alexandra.
O'Callaghan, who started playing bowls at the Dunedin Business Women's club 14 years ago, has won a record 19 Central Otago women's titles.
But it was the first national gold medal for her and the other members of the Alexandra team.
The Alexandra women's team was coached by Bill Clements, who holds a record of more than 50 Central Otago men's titles.
• Janet Swallow (Taieri) will play a key role in Dunedin's bid to win the women's intercentre teams event in Palmerston North this weekend.
A lot was expected from Swallow (54) when she started playing bowls 16 years ago because she is a cousin of Kevin Darling, who represented New Zealand at World Bowls.
She did not disappoint and won a New Zealand fours title in just her third year of bowls, in Mata McEwan's composite four in Palmerston North. She has also won nine Bowls Dunedin titles.
Swallow has represented New Zealand in tests against Scotland, Ireland and the Australian under-25 team.
At that time she was a lead, but she has now switched to skip.
Swallow has been a key member of the Dunedin intercentre team that has reached the national finals for the last two years.
The other key member of the fours team is newcomer Mary Stevenson, at second, who will be playing in the national finals for the first time.
Malia Ellison, the giant killer in Professional Bowls Association events, is lead of the pair with the steady and reliable Carolyn Crawford as skip.
South Otago will represent zone 6 in the men's final, its best players being Bob McCauley as skip of the pair and Murray Grant third in the four.
