Region
United States
207
Florida
137
Colorado
130
California
69
Utah
61
New Mexico
56
Texas
56
Arizona
54
Nevada
51
Wisconsin
50
Alaska
44
Washington (State)
40
Tennessee
39
Montana
38
Wyoming
37
Illinois
35
Missouri
34
Oregon
34
Pennsylvania
34
Ohio
33
Massachusetts
32
New Jersey
32
Kansas
30
New York (State)
29
Minnesota
28
Hawaii
27
Idaho
26
Oklahoma
25
North Carolina
24
North Dakota
24
Virginia
22
West (U.S.)
22
Indiana
21
Michigan
21
Kentucky
20
Nebraska
20
South Dakota
20
West Virginia
17
Georgia
15
Iowa
15
Maine
15
Maryland
15
Alabama
14
Arkansas
14
Jefferson County
14
Louisiana
14
Colorado River Watershed (Colo.-Mexico)
12
Great Lakes (North America)
12
Puerto Rico
12
South Carolina
12
more ...