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Lake Ann

swd-ann_lrg.jpgThe Ann Lake Subwatershed is a 0.40-square-mile subsection of the Riley Creek Subwatershed (a subsection of the Riley Purgatory Bluff Creek Watershed District) that drains to Ann Lake, which ultimately drains to Riley Creek.


Size 119 acres
Average depth 16.8 feet
Max depth 40 feet
Watershed size 257 acres
Impervious surface 2% of watershed
MPCA lake classification Deep lake
Impairment listing Mercury
Common fish Bluegill, Northern Pike, Largemouth Bass, Yellow Perch, Pumkinseed Sunfish
Invasive species Curlyleaf Pondweed, Eurasian Watermilfoil, Common Carp, Brittle Naiad


Learn More

  • DNR Lakefinder - Get information on water levels, fish stocking, and water clarity.
  • MPCA Surface Water Data - Find historical lake and stream water quality data.
  • Metropolitan Council - View and download information on lakes, rivers, streams, rain gauges and for the Minneapolis/St. Paul metropolitan area.