[1] It was named after Major Adoniram Cates' daughter, Brenda Cates (1888-1964), though the municipality was incorporated in 1888, four years before she was born.

[3] The Government of Manitoba initiated these amalgamations in order for municipalities to meet the 1997 minimum population requirement of 1,000 to incorporate a municipality.

[4] The RM is located in the southwest corner of Manitoba.

It southern boundary is the Canada–United States border opposite Bottineau County, North Dakota, however, there is no direct access to the U.S. from the RM.

In the 2021 Census of Population conducted by Statistics Canada, Brenda-Waskada had a population of 650 living in 277 of its 332 total private dwellings, a change of -3.6% from its 2016 population of 674.