# USGS 06736000 NORTH FORK BIG THOMPSON RIVER AT DRAKE, CO. daily mean flow
# Written by Hydrohistorian; missing days are NaN, never zero.
start_date: 1947-05-14 24:00
end_date: 1955-09-29 24:00
timestep: 1 DAY
units: cfs
scale: 1
116
116
114
109
107
107
107
100
105
103
100
100
103
109
164
166
197
222
217
206
194
189
180
175
178
208
222
186
197
178
178
203
214
228
249
267
252
264
360
351
312
306
267
264
246
234
222
208
192
178
178
172
160
145
132
128
124
144
139
131
118
105
111
118
116
107
94
100
92
88
92
82
78
72
71
67
71
72
69
65
63
62
60
63
62
55
65
56
62
55
52
47
48
45
42
40
38
36
35
34
32
32
34
34
30
29
29
27
27
27
26
25
25
24
23
22
22
22
21
22
27
26
24
22
20
20
19
19
19
19
19
18
18
18
18
18
17
17
17
17
16
15
14
14
14
14
15
17
15
15
14
18
17
18
48
22
19
17
16
15
15
17
16
17
15
14
16
15
15
15
14
14
14
14
12
12
10
8.6
14
14
12
12
12
11
12
11
11
11
12
10
10
11
10
9.6
10
12
11
12
10
10
10
10
10
9
9.2
8.3
8.5
8.8
8.2
7.6
7
8
8
8.4
9.5
9.4
9.4
9.5
9.6
9.7
9.2
9.2
9.1
8.9
8.9
9
9.2
9.3
8.7
8.2
8
7.7
7.4
7.8
8.2
8.2
8.2
8
7.8
8.2
8.3
8
7.7
7
6.6
7.2
8
7.4
7.6
7.8
7.2
7.6
7.6
7.4
7.4
7.2
6.8
6.6
6.4
7
7.2
7.4
7
6.6
6.4
6.8
6.6
6.2
6.6
6.6
6.2
6.4
6.2
6
6
6.2
6.2
6.2
6.4
6.5
6.6
6.8
6.4
5.9
6.4
6.1
6
6
6.3
6.8
6
6.3
6
5.7
6
6
6
6.3
6.4
6.6
6.4
6.2
6.6
7
7.6
8.4
7.4
6.8
7.2
7.8
8.4
8
7.2
6.6
9
11
12
10
9
8.6
9.5
10
10
9.5
9
11
12
10
10
10
10
10
12
12
9
10
12
12
15
18
18
23
21
24
25
25
30
25
25
25
35
45
51
51
47
42
41
41
37
37
38
38
36
36
35
36
38
42
45
58
61
70
75
76
82
82
86
88
76
76
80
82
80
88
90
96
118
107
100
102
107
111
102
102
132
113
105
100
94
88
88
82
86
80
75
70
66
61
56
59
56
55
51
51
51
53
51
50
50
48
47
42
41
40
40
38
38
36
35
33
32
31
31
32
32
30
28
25
25
25
24
25
30
24
22
22
21
21
22
24
22
20
20
20
19
18
18
18
19
18
16
15
15
15
15
15
15
16
16
16
16
15
14
13
12
13
13
13
12
12
12
12
15
14
12
12
11
10
10
10
10
10
10
10
10
10
9
9.5
9.5
9
9
9
9.5
10
10
12
14
13
11
10
10
11
10
12
12
11
10
10
10
9
9
11
7.8
12
12
9.5
8.2
10
10
10
9.5
10
9
9
9.5
10
9
8.2
9.5
9.5
9.5
4.6
7.4
12
9
8.2
12
11
9
8.6
8.6
8.6
8.2
8.2
7.8
9
6.2
9
7
7.8
8.2
7.2
8
7.4
6.8
7.8
7.8
8
8.4
7
7
7.2
7.6
7
6.4
6
6.4
6.6
6.4
5.8
5.4
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.4
5
4.2
3.8
4.3
5.8
5.6
5.2
5.2
5.2
5.2
5.2
4.8
4.7
4.9
5
5.2
5.6
5.2
4.9
4.9
5.2
5.2
5.2
4.6
4.5
4.8
5
5
4.7
4.5
4.3
4
4.4
4.5
4.6
4.5
3.2
2.6
2.6
2.6
2.8
3.2
3.3
3.3
3.4
3.5
3.5
3.5
3.4
3.3
3.3
3.3
3.3
3.4
3.5
3.8
4.2
5
5.6
5.2
5.6
5.8
5.4
5.6
5.2
4.8
4.9
5
4.8
4.8
4.8
4.8
5.2
5.4
6.2
6.2
5.8
5.4
5.4
6
6
6
5.4
6.2
5.8
5.4
5.4
5.8
5.8
5.4
5.4
5.4
4.3
4.8
4.8
5.8
5
4.8
7.8
5.8
5.4
5.4
7.4
6.6
7
7.8
9.5
9.5
8.2
8.2
9.5
10
10
8.6
12
14
14
16
16
16
18
20
23
28
32
31
35
38
38
33
31
32
35
37
37
35
38
38
41
47
90
122
130
120
113
100
90
82
80
75
70
68
68
68
73
76
78
82
84
80
78
73
84
369
435
505
652
565
525
455
405
425
505
470
390
365
380
370
322
281
268
250
234
228
200
196
192
172
163
151
148
145
148
154
145
148
157
172
166
148
142
139
130
124
118
110
105
102
100
98
92
85
78
76
76
71
62
60
58
53
47
43
42
42
49
43
42
40
56
78
58
49
43
40
37
37
34
35
34
31
29
29
28
27
25
24
25
25
25
24
24
25
24
22
24
24
22
19
19
19
18
19
21
21
20
19
19
17
17
16
16
16
16
16
15
14
13
13
14
13
13
14
13
13
13
13
13
12
13
12
12
13
12
13
13
13
14
13
15
16
21
15
13
12
13
12
12
11
10
10
10
10
10
12
11
10
10
9.4
8.8
11
11
12
10
8.8
6.4
9.4
10
10
8.8
10
9.4
11
8.2
3.7
7.6
11
12
9.4
8.8
8.8
8.2
8.8
9.4
5.8
6.4
7
7.6
5.2
7.6
7
3.5
5.4
4.4
3.7
3.1
3.6
3.4
3.7
4
4.4
4.8
5
4.5
4.1
4
5
4.7
4.7
4.7
5.2
5.4
4.8
4.8
4.8
5
5.2
3
2
2.5
3.1
4
6
5.8
5.8
5.2
5.6
5.2
5.8
6
5
4.6
5.2
5.8
6.2
6.8
7
6.8
5.5
4.8
3.5
4
4.8
4.4
4.8
4.2
4.5
5.2
6
5.8
7
6.4
5.8
5.8
5.8
5.8
5.4
5.8
6
6.4
6.6
6.6
5.8
5
6
5.2
4.8
5
5.2
5.8
5.2
5.2
5.2
5.2
5.2
4.6
4
4
4.6
5.2
2.8
8.8
4.6
3.4
3.1
2.7
2.5
3
4
5.8
4.6
4.6
4.6
4
4
3.7
3.4
3.1
4
4.6
2.5
3.4
4.6
3.1
4.6
5.8
5.2
6.4
3.7
5.2
5.8
5.8
7.6
8.8
6.4
5.2
5.8
6.4
7.6
9.4
11
8.8
8.8
7.6
7
8.8
12
13
5.2
8.2
8.2
6.4
9.4
7.6
7.6
10
10
11
12
10
10
12
12
13
12
13
14
16
17
18
18
20
27
29
30
31
34
41
40
43
33
30
33
38
59
68
68
68
63
70
82
96
108
99
85
88
105
114
114
108
108
114
114
108
99
93
88
90
85
85
82
75
70
68
70
68
72
68
68
61
59
54
52
52
54
80
99
75
65
59
50
46
44
44
46
40
40
41
41
41
37
37
33
31
31
29
27
26
24
24
24
23
24
22
21
20
20
20
20
19
18
17
16
15
15
14
15
15
15
13
12
12
14
14
14
14
12
12
12
14
12
12
12
12
12
12
14
15
19
23
18
16
15
16
15
14
14
18
16
16
14
15
15
14
14
13
12
12
13
14
14
13
12
11
12
13
11
12
11
11
11
11
11
12
12
11
11
11
11
11
10
11
11
10
9.6
10
10
10
9.6
9.2
10
8
11
11
11
11
9.6
6.8
4.2
7
9.6
7
7.6
8
7.6
8.4
8.8
9.2
10
9.2
8.4
8.2
8
9.6
8.8
8.8
8.8
8.8
8.8
8.8
7
7
7.6
3.5
4.1
4.6
5
5
6
6.4
6
5
5.2
5.2
4
4
4.2
4.1
4.5
4.5
4
4.7
4.7
4.5
4
3.7
4.1
4
4.5
4.6
4.2
4.2
4.5
4.6
5
4.5
4.8
5.4
5
4.8
5.4
5.4
4
4.5
5
5.8
5.2
5.4
4.6
4.2
5.4
5
5.6
6
6.7
7.2
6.6
4.6
3.3
3.6
3.5
3
3.6
4.4
5.4
6
4.6
6
6
6.6
8
7.2
7
6
5.6
6.8
7.7
8.3
8.6
7.6
7.3
7.6
8.6
8
8.9
9.1
8.2
8
7.6
8
7
7.2
7.4
7.8
8.2
8.2
8.8
9.2
9.4
7.2
5.8
6.2
5.6
5.4
5.1
5.4
5.8
6.6
7.2
6
6.4
6.4
6
6.8
8
8
7.2
6.8
5.7
6.8
6.4
6.4
6.8
7.2
6.8
7.2
7.2
7.2
6.8
4.8
3
4.5
6.8
8.8
8.4
8
9.2
9.2
11
12
11
13
14
20
19
21
23
27
29
31
28
26
25
26
32
37
34
35
35
35
35
39
39
39
53
136
160
175
154
142
151
148
151
157
151
145
151
163
166
169
166
178
157
148
154
163
163
160
154
142
139
142
136
136
139
139
160
184
204
211
204
208
184
163
148
151
157
154
160
154
148
139
133
130
130
127
116
116
108
95
90
88
88
78
71
67
71
74
71
65
65
67
71
60
54
48
42
41
54
95
78
84
82
82
129
97
88
82
80
78
68
63
59
57
54
52
49
47
44
42
41
61
74
65
52
47
44
41
38
36
38
42
38
36
35
34
34
33
32
29
28
26
26
24
25
24
22
22
21
21
20
20
20
25
20
20
19
18
16
17
17
17
18
17
16
18
18
24
22
20
20
20
20
20
20
18
17
17
17
17
16
16
16
17
15
17
18
17
17
16
16
15
15
14
14
13
15
17
15
13
12
12
12
12
12
12
11
10
9.5
9
9
10
11
12
13
13
11
11
11
10
10
11
11
11
11
12
11
11
11
11
10
9.5
8.5
9
10
10
11
10
10
9.5
9
8.5
8.5
9
10
10
9
9
9
9
9.5
9.5
10
10
10
10
9
8
8.5
8.5
9
10
9
9
8.5
8.5
9
8.5
8
8
8
7.5
7.5
7.5
7.5
7.5
7
7.5
7.5
7
7
7
7.5
7
7.5
8
7.5
7
7
6.5
6.5
6.5
6.5
6.5
6.5
6
6
6
5.5
5.5
5
5.5
5.5
5.5
5.5
6
6
6
5.5
5.5
5.5
6
5.5
5
5.5
6
6
5
5
5.5
5.5
5.5
5
5
5
5.5
6.5
6
5.5
6
5.5
5.5
4.7
4.7
5
5
5.5
6
6.5
5.5
5.5
5.5
7.5
8
9.5
9.5
8
8.5
8
9
10
12
14
14
11
11
12
11
11
12
14
14
14
16
20
28
49
44
47
68
76
86
94
97
99
110
108
108
115
126
146
146
132
126
118
105
99
97
97
97
103
105
94
94
97
97
101
99
129
159
159
156
153
153
150
150
162
166
172
191
239
248
252
256
239
231
210
202
195
183
172
172
162
140
137
134
132
132
115
103
99
120
105
101
90
86
84
82
78
76
70
68
76
72
63
59
56
52
49
47
56
57
47
44
44
44
41
38
38
36
36
44
61
54
56
49
42
38
35
35
38
42
35
34
38
41
39
36
44
38
34
33
35
33
30
29
28
30
32
32
28
27
26
26
26
26
26
25
24
25
23
21
20
19
19
18
18
18
17
16
17
17
16
15
14
15
15
14
14
15
15
14
14
14
13
13
13
13
13
13
13
13
12
12
13
14
14
14
13
13
12
12
12
11
11
11
11
9.5
9.5
9.5
9
9
8.5
8.5
8.5
8
8
8.5
8.5
8.5
8.5
9.5
6.5
8.5
10
7.5
7.5
8.5
5.5
5
9.5
8
7.5
6.5
7
6
9
9
7
11
9
8.4
7.6
6.8
6.2
6
5.8
5.6
5.6
5.8
5.8
6
6.2
6.2
6.2
6.2
6.2
6.3
6.4
6.6
6.8
7
7
7
7.5
7
6.5
6
6
6
5.8
5.8
5.8
5.6
5.6
5.6
5.8
5.8
5.8
6
6
6.1
6.2
6.2
6.2
6.2
6.2
6.4
6.5
6.5
6.5
6.5
6.5
6.5
6.2
5.6
5.2
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5.2
5.5
5.5
5.4
5.4
5.4
5.4
5.4
5.5
5.8
6
6.2
6.5
6.5
6.5
6.5
6.5
6.4
6.2
6.1
6
6
6
6
6
6
6
6.5
6.5
7
6.9
6.7
6.6
6.5
6.5
6.5
6.5
5
5.5
4.7
4.7
4.4
3.2
5
4.7
4.4
5
4.7
3.8
3.2
4.7
4.4
4.7
6
6
6.5
7.5
10
7
8
8
4.7
7
6.5
8
7
5
5.5
4.7
8.5
8.5
8
6
5.5
6
6
5.5
7.5
7
9
11
14
14
14
15
20
21
20
20
20
18
18
18
17
18
19
20
20
18
17
17
15
17
16
20
20
26
29
32
34
41
42
38
44
49
57
88
94
76
76
78
84
84
84
101
103
97
92
97
112
123
150
187
183
153
143
146
146
187
150
129
115
108
101
97
90
86
86
86
78
94
86
76
68
66
61
57
57
57
66
80
65
57
52
54
59
61
56
52
47
42
41
38
35
35
34
36
39
54
76
70
61
65
61
52
47
44
41
39
39
39
39
36
33
32
36
44
47
49
46
39
36
39
39
36
33
33
33
30
30
32
29
29
27
26
24
24
22
22
20
20
20
18
19
18
18
17
20
19
19
17
18
18
17
15
14
15
15
14
14
14
15
13
13
13
14
14
13
13
13
13
13
11
11
11
12
11
11
11
11
11
11
11
11
11
11
10
11
11
11
10
10
10
10
9.6
10
11
10
10
9
5.7
10
10
10
9.6
10
9.6
9
9
8.3
8.3
4.9
4.9
5.3
5.7
9.6
8.3
8.3
8.3
8.3
7.7
6.9
7.7
6.9
6.5
6.5
6.5
6.5
6.9
6.5
6.9
7.3
6.9
7.3
7.3
6.5
6.9
6.9
6.9
6.5
6.9
6.5
6.3
6.5
6.9
6.5
6.3
6.5
6.9
6.9
6.5
6.5
6.5
6.1
6.1
6.5
6.5
6.1
6.1
5.7
5.3
5.3
5.3
4.9
4.9
5.3
5.7
5.7
5.3
5.3
5.3
4.9
4.5
4.1
4.1
4.1
4.5
4.5
5.3
4.9
5.3
5.3
5.3
5.3
5.3
5.3
5.7
5.7
4.5
4.5
4.1
4.1
4.1
3.7
4.1
4.1
4.1
4.1
4.1
4.1
4.5
4.5
4.1
4.5
4.5
4.1
4.1
3.7
3.7
4.5
4.5
3
3
3.7
3.7
2.8
3
4.1
4.1
4.1
4.5
4.9
6.1
5.3
3.3
3.5
3.7
4.1
4.1
4.5
4.5
4.5
4.5
4.1
4.1
4.5
5.3
4.9
4.9
5.3
5.7
5.3
4.5
4.1
4.5
4.9
5.3
5.7
5.7
5.7
5.7
4.5
4.9
5.7
5.7
5.7
6.1
6.9
6.1
4.1
5.7
6.1
6.5
6.1
6.1
6.1
6.1
6.5
9
9.6
9
9.6
10
9.6
8.3
6.9
7.7
9.6
9.6
9.6
10
9.6
11
13
14
14
16
15
17
17
20
20
18
20
21
26
31
24
20
23
20
18
17
17
16
16
16
17
16
16
17
19
19
19
20
18
17
18
21
22
19
19
21
26
23
20
20
20
20
26
31
41
31
26
22
24
26
21
19
20
20
19
18
18
15
14
14
15
18
30
23
23
21
20
20
19
20
19
17
15
17
18
16
15
14
13
13
13
13
13
15
20
19
18
19
15
15
15
15
13
14
13
13
13
12
12
11
11
13
12
11
11
11
11
11
13
11
9.6
11
11
11
11
11
11
10
10
8.3
9
9.6
8.3
9.6
7.7
9
7.7
7.3
7.3
7.7
8.3
7.7
8.3
16
12
11
12
12
11
12
11
8.7
8.7
8.7
8.7
8.1
8.1
8.1
8.1
8.1
8.1
7.5
7.5
6.9
8.7
9.3
8.7
8.7
8.7
8.1
7.5
8.1
8.1
8.1
9.3
9.3
6.4
9.8
8.7
9.3
6.4
6.4
6.4
10
8.1
7.5
9.3
8.7
7.5
7.5
4.7
6.9
8.1
7.5
6.9
6.9
7.5
6.4
4.3
6.4
6.9
5
6.4
5.8
5.2
5.8
5.2
4.5
2.9
3.4
3.6
5.8
7.5
8.7
7.5
6.4
5.8
6.4
5.8
5.8
6.9
5.8
5
5.8
5.2
5
5
5
5.2
5.2
5.8
5
5.2
5
4.7
5.2
4.5
4
3.8
4.5
4.2
4.5
5
5.2
5
4.5
4.3
4
4
4
4
4
4
4.3
4.5
4.3
4
4.3
4
4
3.8
3.8
3.8
3.8
3.8
3.8
3.8
4
4
4.3
4.5
5.2
5
4.7
4.5
4
3.8
4.3
4
4
4.3
4.3
4.3
4.5
4.7
5.2
4.7
4.5
4.5
4.5
4.3
4
4
3.8
3.4
3.8
4.7
5.2
5.8
5
4
4
3.6
4.3
3.8
3.8
4
4.2
4
4.3
4.3
3.8
4
4
4.3
4
4.5
4
4
4
4
3.4
3.8
4
5
4.3
3.8
4
4
4.3
5.8
5.8
3.8
5
5
3.4
4.5
3.8
4
4.3
4
4.5
5.2
4.5
3.6
5
6.4
7.5
6.9
8.1
8.1
5.2
6.4
6.9
6.9
6.4
5.8
7.5
7.5
5.2
5.8
5.8
8.7
11
9.8
8.7
8.1
9.8
12
14
15
14
14
14
15
15
16
19
15
19
21
23
25
28
24
25
25
23
21
18
19
21
25
25
28
25
32
28
32
29
38
42
34
32
33
36
42
45
40
44
39
39
40
44
44
44
45
48
42
39
36
34
32
30
29
29
29
29
29
28
28
33
29
28
30
26
24
24
24
23
20
18
19
18
19
24
62
40
33
33
38
30
25
23
21
24
23
23
51
50
51
51
42
39
51
45
42
53
67
56
56
58
60
56
53
46
45
42
42
44
45
45
42
39
38
36
34
33
32
32
28
28
26
25
24
24
24
23
21
23
23
21
21
21
24
23
21
20
21
25
24
20
19
16
