The park was created in the early 1980s and occupies about 237 hectares. The origin of the name is uncertain but it is likely named after the Tsuu T'ina Chief Weaselhead who was in power at the time of European contact. Before becoming a park, the area was used by the military for training purposes.
Weaselhead Flats contain a diverse range of habitats including coniferous forests, deciduous forests, tall shrub communities, open waters, mud and sandbars, oxbow wetlands, and a fast-flowing river. The park also features one of the largest stands of coniferous forest in the city.
The diverse habitats at Weaselhead Flats support a wide range of birds and other wildlife. Visitors can spot species such as Common Loons, Tundra Swans, shorebirds like Lesser Yellowlegs and American Avocet, Red and White-winged Crossbills, hummingbirds like Calliope, Rufous, and Ruby-throated, and even Black Bears.
Weaselhead Flats is home to the only delta in the city, formed by the Elbow River as it flows into the Glenmore Reservoir. The park also features oxbow wetlands, a fast-flowing river, and a cliff face that provides a view of the silts deposited on the bottom of Glacial Lake Calgary.
The flats as we know them started developing in 1933 when the Glenmore Dam was created. Evidence of their previous use by the military, such as foxholes, can still be found scattered throughout the park. The area was eventually designated as a park in the early 1980s.