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USGS Daily Statistics for New Hampshire

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 01078000 SMITH RIVER NEAR BRISTOL, NH


Merrimack County, New Hampshire
Hydrologic Unit Code 01070001
Latitude  43°33'59", Longitude  71°44'54" NAD27
Drainage area 85.8  square miles
Gage datum 449.42 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1917-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 116 89 113 472 347 158 103 53 33 60 110 169
2 116 82 117 470 327 158 89 55 33 62 113 171
3 114 92 123 472 321 149 77 50 35 54 131 157
4 107 101 124 475 312 141 71 43 34 54 160 143
5 104 105 123 487 286 125 73 42 31 52 140 138
6 106 96 131 521 261 119 69 43 33 57 131 156
7 106 89 152 523 241 120 61 43 35 64 126 182
8 102 90 162 510 225 114 56 53 32 67 123 173
9 107 87 176 477 217 107 55 45 32 78 135 158
10 121 81 181 470 211 110 58 46 35 73 139 154
11 117 88 186 481 211 108 66 65 39 63 136 162
12 122 102 197 520 221 103 65 60 43 62 130 169
13 130 99 215 523 228 103 69 53 43 62 135 157
14 123 96 231 506 255 104 70 54 39 63 143 158
15 117 92 243 494 252 115 66 46 36 77 135 156
16 109 95 242 504 236 110 58 44 38 88 130 143
17 100 94 251 529 222 100 54 39 53 90 133 128
18 93 92 272 529 212 100 50 34 47 85 129 143
19 104 91 315 515 205 93 45 34 41 80 117 148
20 109 91 296 497 201 85 45 32 42 86 129 129
21 105 101 302 475 192 81 44 29 66 120 136 131
22 99 113 299 458 186 82 55 33 75 116 131 144
23 97 121 288 461 177 86 67 35 53 94 128 148
24 99 127 285 452 178 87 71 33 50 104 122 153
25 114 143 298 431 189 91 59 31 44 130 135 162
26 125 145 312 405 183 85 46 32 43 135 151 159
27 140 135 358 381 168 88 46 28 46 121 165 148
28 132 125 415 360 155 88 46 36 48 123 163 137
29 116 132 436 367 147 96 53 51 44 122 170 127
30 102   439 349 152 108 65 45 52 127 172 124
31 93   444   154   62 37   122   122