Destroyed Mounds around Lake Koshkonong (per H.L.Skavlem):
Ogden Group (5 conicals & 3 linears)
Rock River Group (14 conicals & possible effigy)
Tay-E-He-Dah Group (9 conicals, 3 linears, 1 tapering linear, 1 club-like)
Taylor House Group (6 conicals, 1 oval, 1 effigy, 2 linears, 2 tapering linear)
Fulton Group (3 conicals)
John Son Group (1 conical, 1 linear, 1 tapering linear, 1 curved linear)
Noe Springs Group (4 effigies, 3 club-like, 3 linears, 53 conicals, 2 chain-type mounds - linear mounds with conical ones built upon them at sometimes regular intervals)
North Group (1 oval, 1 effigy, 3 conicals, 2 linear
Rufus Bingham Group (17 conicals, 1 linear, 2 possible effigies)
LeSellier Group (25 conicals, 2 linears, 1 mink effigy)
Kumlien Group (1 effigy, 4 ovals, 4 linears, 19 conicals & possibly more)
Koshkonong Creek Mounds (4 conicals & 4 linears)
Draves Group (2 conicals, 1 oval, 3 effigies - of which one is unknown long-tailed creature)
Skavlem Group (5 conicals)
Carcajou Group (2 conicals)
Loge Bay Group (3 conicals)
Altpeter Group (2 turtles, 2 dumbbells, 5 conicals, 3 tapering linears, 13 linears, 3 of unusual shape - either club-like or mutilated panthers)
Fun Hunter's Point Mound (1 conical)
Lookout Group (9 conicals & 1 linear)
Haight's Creek Group (12 conicals)
Ira Bingham Group (1 kidney-shaped, 1 pear-shaped, 5 linear, 12 conical)
According to Hugh Highsmith, these mounds are still visible in and around Fort Atkinson, most on private property:
Curtis Hill Group (only 1 linear still exists today)
Brandel Mound
Scherwitz & Borchardt Group (1 curved linear, 2 birds, 1 turtle & 1 conical)
Brounty Mound
Ward Mounds (1 turtle & 1 linear)
Wedl Mounds (2 ovals linked together)
Banker Group (7 mounds, used to have more)
North Hills Mound Complex (4 mounds or their parts still exist; used to have signal mound and very unusual Y-shaped mound)
Armstrong mound (used to be part of a group)
Sayre/Hake Group (3 ovals)
Butternut Hills Group (destroyed, used to have 2 or 3 conicals)
Telfer Mound