| 
 North America: International River Basin register
  
 
| Basin Name | 
Total area of basin (sq. km) (1) | 
Country name | 
Area of country in basin (sq. km) | 
Percent area of country in basin (%) | 
 
| 
Alsek
 | 
28 400
 | 
Canada
 | 
26 500
 | 
93.50
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
1 800
 | 
6.50
 | 
 
| 
Artibonite
 | 
8 800
 | 
Haiti
 | 
6 600
 | 
74.37
 | 
 
| 
 
 | 
 
 | 
Dominican Republic
 | 
2 300
 | 
25.55
 | 
 
| 
Belize (43)
 | 
11 500
 | 
Belize
 | 
7 000
 | 
60.86
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
4 500
 | 
39.14
 | 
 
| 
Candelaria
 | 
12 800
 | 
Mexico
 | 
11 300
 | 
88.24
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
1 500
 | 
11.74
 | 
 
| 
Changuinola
 | 
3 200
 | 
Panama
 | 
2 900
 | 
91.29
 | 
 
| 
 
 | 
 
 | 
Costa Rica
 | 
300
 | 
8.33
 | 
 
| 
Chilkat
 | 
3 800
 | 
United States of America
 | 
2 100
 | 
56.59
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
1 600
 | 
43.35
 | 
 
| 
Chiriqui
 | 
1 700
 | 
Panama
 | 
1 500
 | 
86.17
 | 
 
| 
 
 | 
 
 | 
Costa Rica
 | 
200
 | 
13.83
 | 
 
| 
Choluteca
 | 
7 400
 | 
Honduras
 | 
7 200
 | 
97.68
 | 
 
| 
 
 | 
 
 | 
Nicaragua
 | 
200
 | 
2.32
 | 
 
| 
Coatan Achute
 | 
2 000
 | 
Mexico
 | 
1 700
 | 
86.27
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
300
 | 
13.73
 | 
 
| 
Coco/Segovia
 | 
25 400
 | 
Nicaragua
 | 
17 900
 | 
70.52
 | 
 
| 
 
 | 
 
 | 
Honduras
 | 
7 500
 | 
29.48
 | 
 
| 
Colorado
 | 
655 000
 | 
United States of America
 | 
644 600
 | 
98.41
 | 
 
| 
 
 | 
 
 | 
Mexico
 | 
10 400
 | 
1.59
 | 
 
| 
Columbia
 | 
668 400
 | 
United States of America
 | 
566 500
 | 
84.75
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
101 900
 | 
15.24
 | 
 
| 
Firth
 | 
6 000
 | 
Canada
 | 
3 800
 | 
63.60
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
2 200
 | 
36.40
 | 
 
| 
Fraser
 | 
239 700
 | 
Canada
 | 
239 100
 | 
99.74
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
600
 | 
0.26
 | 
 
| 
Goascoran
 | 
2 800
 | 
Honduras
 | 
1 500
 | 
53.36
 | 
 
| 
 
 | 
 
 | 
El Salvador
 | 
1 300
 | 
46.64
 | 
 
| 
Grijalva (43)
 | 
126 800
 | 
Mexico
 | 
78 900
 | 
62.25
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
47 800
 | 
37.72
 | 
 
| 
 
 | 
 
 | 
Belize
 | 
20
 | 
0.02
 | 
 
| 
Hondo (43)
 | 
14 600
 | 
Mexico
 | 
8 900
 | 
61.14
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
4 200
 | 
28.50
 | 
 
| 
 
 | 
 
 | 
Belize
 | 
1 500
 | 
10.36
 | 
 
| 
Lempa
 | 
18 000
 | 
El Salvador
 | 
9 500
 | 
52.45
 | 
 
| 
 
 | 
 
 | 
Honduras
 | 
5 800
 | 
32.01
 | 
 
| 
 
 | 
 
 | 
Guatemala
 | 
2 800
 | 
15.54
 | 
 
| 
Massacre
 | 
800
 | 
Haiti
 | 
500
 | 
62.03
 | 
 
| 
 
 | 
 
 | 
Dominican Republic
 | 
300
 | 
35.96
 | 
 
| 
Mississippi
 | 
3 226 300
 | 
United States of America
 | 
3 176 500
 | 
98.46
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
49 800
 | 
1.54
 | 
 
| 
Motaqua
 | 
16 100
 | 
Guatemala
 | 
14 600
 | 
90.85
 | 
 
| 
 
 | 
 
 | 
Honduras
 | 
1 500
 | 
9.11
 | 
 
| 
Negro
 | 
5 800
 | 
Nicaragua
 | 
4 800
 | 
83.87
 | 
 
| 
 
 | 
 
 | 
Honduras
 | 
900
 | 
15.68
 | 
 
| 
Nelson-Saskatchewan
 | 
1 109 400
 | 
Canada
 | 
952 000
 | 
85.81
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
157 400
 | 
14.19
 | 
 
| 
Paz
 | 
2 200
 | 
Guatemala
 | 
1 400
 | 
64.47
 | 
 
| 
 
 | 
 
 | 
El Salvador
 | 
800
 | 
35.53
 | 
 
| 
Pedernales
 | 
400
 | 
Haiti
 | 
200
 | 
67.32
 | 
 
| 
 
 | 
 
 | 
Dominican Republic
 | 
100
 | 
32.68
 | 
 
| 
Rio Grande (North America)
 | 
656 100
 | 
United States of America
 | 
341 800
 | 
52.10
 | 
 
| 
 
 | 
 
 | 
Mexico
 | 
314 300
 | 
47.90
 | 
 
| 
San Juan
 | 
42 200
 | 
Nicaragua
 | 
30 400
 | 
72.02
 | 
 
| 
 
 | 
 
 | 
Costa Rica
 | 
11 800
 | 
27.93
 | 
 
| 
Sarstun (43)
 | 
2 100
 | 
Guatemala
 | 
1 800
 | 
87.63
 | 
 
| 
 
 | 
 
 | 
Belize
 | 
300
 | 
12.37
 | 
 
| 
Sixaola
 | 
2 900
 | 
Costa Rica
 | 
2 500
 | 
88.65
 | 
 
| 
 
 | 
 
 | 
Panama
 | 
300
 | 
9.99
 | 
 
| 
Skagit
 | 
8 000
 | 
United States of America
 | 
7 100
 | 
88.46
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
900
 | 
11.54
 | 
 
| 
St. Croix
 | 
4 600
 | 
United States of America
 | 
3 300
 | 
70.86
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
1 400
 | 
29.14
 | 
 
| 
St. John (North America)
 | 
47 700
 | 
Canada
 | 
30 300
 | 
63.50
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
17 300
 | 
36.22
 | 
 
| 
St. Lawrence
 | 
1 055 200
 | 
Canada
 | 
559 000
 | 
52.98
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
496 100
 | 
47.02
 | 
 
| 
Стайкан
 | 
50 900
 | 
Canada
 | 
50 000
 | 
98.32
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
900
 | 
1.68
 | 
 
| 
Suchiate
 | 
1 600
 | 
Guatemala
 | 
1 100
 | 
68.79
 | 
 
| 
 
 | 
 
 | 
Mexico
 | 
500
 | 
31.21
 | 
 
| 
Taku
 | 
18 100
 | 
Canada
 | 
16 300
 | 
90.09
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
1 700
 | 
9.13
 | 
 
| 
Tijuana
 | 
4 400
 | 
Mexico
 | 
3 100
 | 
70.57
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
1 300
 | 
29.43
 | 
 
| 
Whiting
 | 
2 600
 | 
Canada
 | 
2 000
 | 
80.06
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
500
 | 
19.94
 | 
 
| 
Yaqui
 | 
74 700
 | 
Mexico
 | 
70 100
 | 
93.87
 | 
 
| 
 
 | 
 
 | 
United States of America
 | 
4 600
 | 
6.13
 | 
 
| 
Yukon
 | 
829 700
 | 
United States of America
 | 
496 400
 | 
59.83
 | 
 
| 
 
 | 
 
 | 
Canada
 | 
333 300
 | 
40.17
 | 
 
 
 
 
  
   
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