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USGS Surface-Water Daily Statistics for the Nation

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 01400000 North Branch Raritan River near Raritan NJ


Somerset County, New Jersey
Hydrologic Unit Code 02030105
Latitude  40°34'14", Longitude  74°40'45" NAD83
Drainage area 190  square miles
Gage datum 50.43 feet above NGVD29
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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 1923-10-01 -> 2023-09-30)

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
1 408 311 430 534 431 363 207 208 197 192 227 360
2 416 367 467 571 368 381 187 227 284 167 223 359
3 453 487 423 543 371 280 154 210 164 152 299 339
4 400 428 507 546 378 280 139 208 188 152 210 343
5 367 339 518 597 353 252 170 176 130 148 200 375
6 446 328 541 565 364 277 181 174 176 153 194 357
7 384 482 586 599 384 264 294 179 197 130 292 377
8 375 459 514 532 333 270 204 177 198 145 304 373
9 380 313 493 490 348 234 215 214 151 217 277 373
10 388 337 467 493 341 213 205 173 133 144 272 319
11 333 376 529 410 343 208 177 223 132 148 215 419
12 346 346 543 463 444 227 166 213 160 190 261 409
13 294 443 577 493 406 287 256 278 175 146 296 357
14 325 406 673 426 368 247 212 232 163 158 249 431
15 358 464 606 481 339 214 190 171 214 203 241 327
16 299 383 504 678 354 196 176 159 232 165 276 369
17 304 371 485 531 360 223 157 187 238 157 323 361
18 358 405 477 412 332 217 171 187 176 205 279 346
19 404 407 521 425 326 235 152 235 195 307 247 285
20 454 453 551 407 330 218 146 145 222 306 303 301
21 412 442 568 372 299 204 206 141 213 190 325 490
22 405 445 641 373 273 227 192 266 194 160 302 357
23 362 481 576 393 298 229 341 287 166 191 301 371
24 489 516 522 375 323 235 280 197 177 187 240 374
25 632 574 486 394 345 227 196 157 207 221 341 407
26 530 576 435 405 314 195 165 141 155 248 337 394
27 438 468 487 416 300 196 207 170 205 230 325 421
28 424 463 511 449 253 241 250 417 216 282 356 386
29 388 390 497 379 346 199 194 186 213 247 353 390
30 354   517 372 358 221 169 145 211 265 382 440
31 330   541   293   163 134   230   381