Teams that were involved were the Mount Forest Rams, Arthur Tigers, Thornbury, Harriston Blues, Milverton Four Wheel Drives, Plattsville Combines, Seaforth, Durham 72's, Listowel, Lucknow, Crediton, Atwood, Ripley, Belgrave, and Kurtzville.
With four major loops: A, B, C, and D; the WOAA had a wide variety of teams, including the Durham 72's, Arthur Tigers, Brussels Crusaders, Lion's Head Northstars, Woodford Royals, Ripley Roosters, Drayton Comets, St. Clements Saints, Teeswater Falcons, Lucknow Lancers, Kincardine Kings, Dundalk Flyers, Monkton Wildcats, Mitchell Red Devils, and Tara Cyclones.
In the 1980s, many teams jumped between the WOAA and the Ontario Hockey Association Senior leagues that attempted to operate in the area.
The Palmerston 81's and Elora Rocks also emerged as dominant forces later in the decade along with Tavistock as the Thundercats stranglehold on the league has loosened.
The Saugeen Shores Winterhawks, based out of Port Elgin, have become the perennial team to beat since entering the league in 2007/08, winning the "AA" championship in 2009, 2011 and 2012.
Two of them applied successfully for expansion into the WOAA, the Tillsonburg Vipers and the two-time Allan Cup champion Petrolia Squires.
Much like the rest of the world, the 2020 playoffs were stopped in the semi-final round, and ultimately cancelled, by the COVID-19 pandemic, resulting in no champion being crowned for the first time in over 70 years.
The Ripley Wolves were in first place with an 11-2-1 record on January 4, 2022 when the arrival of the omicron variant of COVID-19 caused restrictions to be re-imposed, shutting down the league.
On January 12, 2022, the league announced the regular season had been declared complete and that the playoffs would begin upon resumption of play.
The Seaforth Centenaires ended Clinton's reign as champions, knocking off the Radars in five games to capture the Sr. AA Championship.
In the summer of 2023 ten of the twelve existing teams voted to leave the league and reform under the umbrella of the Ontario Hockey Association.
[3] At the end of the 2022-23 WOAA Senior AA season, the Petrolia Squires elected to join the Western Ontario Super Hockey League, while Shallow Lake and Shelburne chose to take a year off.