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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 01098530 SUDBURY RIVER AT SAXONVILLE, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°19'31", Longitude  71°23'53" NAD27
Drainage area 106  square miles
Contributing drainage area 106  square miles
Gage datum 109.78 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 1979-10-01 -> 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
1 248 228 298 468 291 185 107 85 69 94 172 198
2 245 222 308 462 286 193 106 77 80 90 165 200
3 238 220 319 455 280 191 104 72 75 87 164 208
4 244 235 315 475 270 186 103 71 75 86 152 212
5 255 247 309 473 262 182 96 68 71 84 148 219
6 237 245 303 471 256 210 94 63 70 88 149 228
7 234 249 317 455 248 254 92 65 76 80 139 229
8 230 255 323 440 239 263 101 90 80 76 131 226
9 223 245 328 422 231 243 115 93 82 92 130 225
10 235 228 339 406 237 226 124 100 83 86 135 233
11 236 224 341 379 239 206 115 96 84 86 142 253
12 233 226 343 363 231 200 114 97 74 89 146 283
13 241 231 345 365 225 201 113 98 72 90 153 281
14 243 232 370 357 229 213 108 96 72 101 163 280
15 241 228 391 340 227 205 98 93 75 130 168 273
16 236 236 388 357 228 196 95 92 71 132 175 264
17 237 240 385 369 228 186 96 83 70 133 187 265
18 238 246 373 352 222 180 93 88 81 130 185 284
19 234 247 358 339 224 174 96 104 89 130 178 294
20 236 246 355 323 223 161 87 115 81 141 170 281
21 223 248 348 313 208 152 90 108 72 156 173 266
22 210 257 371 321 195 145 97 98 69 154 178 259
23 206 260 385 335 192 146 95 88 70 155 190 270
24 232 275 386 338 190 138 113 84 66 156 185 275
25 259 294 377 324 191 137 119 91 76 156 188 281
26 271 306 365 314 191 132 113 86 92 164 193 274
27 270 300 370 310 184 124 110 78 100 171 205 269
28 266 298 375 300 171 125 101 78 96 174 205 270
29 263 311 390 294 166 118 89 84 95 173 204 269
30 249   430 287 171 113 86 78 96 184 196 273
31 240   458   180   73 74   177   260