Meteor and Comet Impact Hazards

North American Impact Craters
Data from Observer's Handbook 2004, Royal Astronomical Society of Canada

# Name, location N.Lat. W.Long. Diam (km) Age (Myr) Age Error Surface Expression Visible Geologic Features
1 Ames, Oklahoma 36 15 98 12 16 470 30 buried 3 km none
2 Avak, Alaska 71 15 156 38 12 100 5 buried 30 m none
3 Barringer (Meteor) Crater, Arizona, alt 35 02 111 01 1.2 .049 .003 rimmed polygonal crater fragments of meteorite, highly shocked sandstone
4 Beaverhead, Montana 46 05 113 00 60 600 ? oval area of crushed sandstones, and shatter cones shatter cones
5 Brent, Ontario 46 05 78 29 3.8 450 30 sediment-filled shallow depression fracturing
6 Calvin, Michigan 41 50 85 57 8.5 450 10 buried 400 m none
7 Carswell, Saskatchewan 58 27 109 30 39 115 10 discontinuous circular ridge shatter cones, breccia, impact melt
8 Charlevoix, Quebec 47 32 70 18 54 357 15 semi-circular trough, central peak breccia, shatter cones, impact melt
9 Chesapeake Bay, Virginia 37 17 76 01 85 35.5 0.6 buried 400-500 m, ring structure none
10 Chicxulub, Mexico, alt 21 20 89 30 180 64.98 0.05 buried 1 km, ring of sink holes none, associated with K/T mass extinction
11 Clearwater East, Quebec 56 05 74 07 26 290 20 circular lake sedimentay float
12 Clearwater West, Quebec 56 13 74 30 36 290 20 island ring in circular lake impact melt, breccias
13 Cloud Creek, Wyoming 43 07 106 45 7 190 30 buried 1.1 km none
14 Couture, Quebec 60 08 75 20 8 430 25 circular lake breccia float
15 Crooked Creek, Missouri 37 50 91 23 7 320 80 oval area of disturbed rocks, shallow marginal depression
16 Decatureville, Missouri 37 54 92 43 6 300 or less slight oval depression breccia, shatter cones
17 Deep Bay, Saskatchewan 56 24 102 59 13 100 50 circular bay sedimentary float
18 Des Plaines, Illinois 42 03 87 52 8 280 or less buried 15-100 m none
19 Eagle Butte, Alberta 49 42 110 30 10 65 or less minor structural disturbance shatter cones
20 Elbow, Saskatchewan 50 59 106 43 8 395 25 buried, small mound none
21 Flynn Creek, Tennessee 36 17 85 40 3.8 360 20 sediment-filled shallow depression with small central peak breccia, shatter cones
22 Glasford, Illinois 40 36 89 47 4 430 or less buried 350 m none
23 Glover Bluff, Wisconsin 43 58 89 32 8 500 or less disturbed dolomite exposed in three quarries shatter cones
24 Gow, Saskatchewan 56 27 104 29 5 250 or less lake and central island breccia, impact melt
25 Haughton, N.W. Territories 75 22 89 41 24 23.4 1.0 shallow circular depression shatter cones, breccia
26 Haviland, Kansas 37 35 99 10 0.015 0.001 or less excavated depression fragments of meteorite
27 Holleford, Ontario 44 28 76 38 2.4 550 100 sediment-filled shallow depression sedimentary fill
28 Ile Rouleau, Quebec 50 41 73 53 4 300 or less island is central peak of submerged structure shatter cones, breccia dykes
29 Kentland, Indiana 40 45 87 24 13 97 or less central peak exposed in quarries, rest buried breccia, shatter cones, disturbed rocks
30 La Moinerie, Quebec 57 26 66 37 8 400 50 lake-filled depression breccia float
31 Manicouagan, Quebec 51 23 68 42 100 214 1 circumferential lake, central peak impact melt, breccia
32 Manson, Iowa, alt, info 42 35 94 33 35 73.8 0.3 none, central elevation buried 30 m none
33 Maple Creek, Saskatchewan 49 48 109 06 6 <75 buried, small mound disturbed rocks
34 Marquez Texas 31 17 96 18 12.7 58 2 circular area of disturbed rock shatter cones
35 Middlesboro, Kentucky 36 37 83 44 6 300 or less circular depression disturbed rocks
36 Mistastin, Laborador 55 53 63 18 28 38 4 elliptical lake and central island breccia, impact melt
37 Montagnais, Nova Scotia 42 53 64 13 45 50.5 0.8 none, under water 115 m and sediments none
38 New Quebec, Quebec, alt 61 17 73 40 3.4 1.4 0.1 rimmed, circular lake raised rim, impact melt
39 Newporte, North Dakota 48 58 101 58 3 500 or less none, buried 3 km none
40 Nicholson, N.W. Territories 62 40 102 41 12.5 400 or less irregular lake with islands breccia
41 Odessa, Texas 31 45 102 29 0.17 0.05 or less sediment-filled depression with very slight rim, 4 others buried and smaller meteorite fragments
42 Pilot, N.W. Territories 60 17 111 01 6 445 2 circular lake fracturing, breccia float
43 Presqu'ile, Quebec 49 43 74 48 24 500 or less none, heavily eroded shatter cones
44 Red Wing, North Dakota 47 36 103 33 9 200 25 none, buried 1.5 km none
45 Rock Elm, Wisconsin 44 43 92 14 6 <505 circular rim depression, central dome shatter cones, breccia
46 St. Martin, Manitoba 51 47 98 32 40 220 32 none, partially buried impact melt
47 Serpent Mound, Ohio 39 02 83 24 8 320 or less circular area of disturbed rock, slight central peak breccia, shatter cones
48 Sierra Madera, Texas 30 36 102 55 13 100 or less central hills, annular depression, outer ring of hills breccia, shatter cones
49 Slate Islands, Ontario 48 40 87 00 30 450 ? islands are central peak of submerged structure shatter cones, breccia dyke
50 Steen River, Alberta 59 30 117 38 25 95 7 none, buried 200 m none
51 Sudbury, Ontario 46 36 81 11 250 1850 3 deformed elliptical basin breccia, impact melt, shatter cones, breccia dyke
52 Upheaval Dome, Utah 38 26 109 54 10 65 or less circular area of disturbed rock breccia dykes
53 Viewfield, Saskatchewan 49 35 103 34 25 190 20 buried 1 km none
54 Wanapitei, Ontario 46 45 80 45 7.5 37 2 lake-filled, depression breccia float
55 Wells Creek, Tennessee 36 23 87 40 12 200 100 basin with central hill, inner and outer annular valleys, ridges breccia, shatter cones
56 West Hawk, Manitoba 49 46 95 11 2.4 100 50 circular lake none
57 Wetumpka, Alabama 32 31 86 10 6.5 81 1.5 arcuate outer ridge, central depression breccia

See the Earth Impact Database! I shamelessly plundered their wonderful store of data and images for this page, but they do a much more thorough and scholarly job.