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USGS Daily Statistics for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


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 01179500 WESTFIELD RIVER AT KNIGHTVILLE, MA


Hampshire County, Massachusetts
Hydrologic Unit Code 01080206
Latitude  42°17'16", Longitude  72°51'53" NAD27
Drainage area 161  square miles
Contributing drainage area 161  square miles
Gage datum 460.62 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 1908-10-01 -> 2024-09-30)

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
1 280 301 364 951 619 303 174 126 115 218 251 397
2 300 255 370 982 575 293 186 122 116 186 255 359
3 330 250 357 964 552 305 175 115 131 161 336 337
4 327 274 335 1,010 533 329 167 135 122 168 355 325
5 300 284 371 1,080 517 302 152 115 111 164 303 314
6 288 261 417 1,110 459 313 169 106 107 163 285 360
7 331 270 395 1,170 414 333 152 111 120 164 275 345
8 338 283 437 1,130 389 325 150 148 107 158 302 346
9 330 260 479 1,050 422 375 152 141 137 154 342 342
10 341 238 512 970 433 370 138 111 140 161 358 371
11 340 238 475 993 465 330 133 137 122 167 297 330
12 328 282 539 1,080 465 313 143 173 128 176 258 315
13 303 266 547 989 474 323 139 146 139 189 324 343
14 293 271 589 939 456 312 151 133 161 152 333 387
15 292 290 648 886 468 301 149 133 128 151 294 359
16 287 275 599 871 401 270 144 120 162 170 304 329
17 270 268 636 884 442 256 122 108 135 210 319 310
18 247 268 708 897 456 242 125 104 138 213 317 324
19 308 268 634 918 462 226 128 93 163 217 295 327
20 284 274 641 862 428 207 152 85 181 258 316 325
21 267 277 741 840 404 223 135 80 211 237 304 269
22 361 336 694 846 432 198 154 101 206 231 312 264
23 330 340 699 807 393 193 179 102 137 277 323 329
24 303 360 721 789 396 193 162 138 137 342 293 316
25 373 411 751 796 395 179 141 136 140 305 294 323
26 396 437 783 789 381 206 117 146 148 294 276 339
27 394 446 819 733 359 190 161 103 146 282 354 333
28 352 431 907 682 325 188 155 107 156 236 356 346
29 325 439 848 676 317 187 143 146 190 241 388 348
30 306   859 621 314 190 154 162 215 265 366 337
31 292   876   313   143 124   259   321