| Mann Lakes | |
| Pushpin Map: | Alberta |
| Location: | County of St. Paul No. 19, Alberta |
| Coords: | 54.158°N -111.509°W |
| Basin Countries: | Canada |
| Length: | Upper 3.1km (01.9miles) Lower 3km (02miles) |
| Width: | Upper 3.3km (02.1miles) Lower 3.5km (02.2miles) |
| Area: | Upper 4.59km2 Lower 5.1km2 |
| Depth: | Upper 5.7m (18.7feet) Lower 4m (13feet) |
| Max-Depth: | Upper 9.1m (29.9feet) Lower 6.1m (20feet) |
| Elevation: | Upper 618m (2,028feet) Lower 617m (2,024feet) |
| Reference: | Mann Lakes |
The Mann Lakes are two close basin lakes in Alberta. Once a single lake named Mann Lake, the construction of Highway 28 in 1961 split the lake in two.[1] The more southerly Upper Mann Lake lies at 54.1436°N -111.5158°W, and just north of it, the more northerly Lower Mann Lake at 54.1667°N -141°W. Since 1980, their water level has been steadily declining.[2]