April 2013 - February 2014 River Basins Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
129 years
1901-2000
201
Pacific Northwest Basin
46.7
1.4
109
45.2
202
California River Basin
61
2.8
125
58.1
203
Great Basin
51.3
2
116
49.3
204
Lower Colorado River Basin
61.2
2.1
121
59.1
205
Upper Colorado River Basin
46.1
1.7
105
44.4
206
Rio Grande River Basin
60.7
0.9
96
59.7
207
Texas Gulf Coast River Basin
65.6
-0.6
26
66.2
208
Arkansas-White-Red Basin
57.2
-0.8
23
57.9
209
Lower Mississippi River Basin
62.9
-1.3
10
64.2
210
Missouri River Basin
46.1
-0.4
45
46.5
211
Souris-Red-Rainy Basin
38
-1.9
15
39.9
212
Upper Mississippi River Basin
45.8
-2.1
9
47.9
213
Great Lakes Basin
44.8
-0.9
24
45.8
214
Tennessee River Basin
57.1
-1.3
14
58.4
215
Ohio River Basin
52.2
-1
22
53.2
216
South Atlantic-Gulf Basin
64.3
-0.2
38
64.6
217
Mid-Atlantic Basin
51.3
0.3
66
51.1
218
New England Basin
44.5
1.1
92
43.5