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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 01388000 Ramapo River at Pompton Lakes NJ


Passaic County, New Jersey
Hydrologic Unit Code 02030103
Latitude  40°59'31", Longitude  74°16'48" NAD83
Drainage area 160  square miles
Gage datum 171.35 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 1921-10-01 -> 2020-09-30)

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
1 345 284 411 640 373 327 179 126 109 160 167 353
2 342 282 420 624 357 350 158 119 172 138 183 361
3 341 358 422 650 341 306 135 131 142 139 230 331
4 330 359 445 615 357 280 135 119 127 130 256 323
5 314 320 459 679 352 267 124 113 108 124 222 335
6 324 288 481 709 356 265 134 111 117 128 207 355
7 327 293 567 671 360 260 148 122 155 125 197 358
8 332 323 544 582 340 268 136 116 160 124 247 380
9 324 295 517 529 338 232 128 108 153 173 322 363
10 316 280 475 549 344 210 114 126 118 139 283 323
11 303 308 544 498 369 196 107 133 107 119 261 325
12 295 327 626 454 394 186 101 132 130 130 258 384
13 280 319 590 464 385 202 119 135 142 169 265 387
14 270 327 640 446 370 209 158 143 146 157 275 382
15 299 335 616 444 377 210 149 128 145 175 267 348
16 285 333 573 549 353 195 142 125 168 218 253 317
17 268 312 555 614 383 196 116 141 240 160 271 318
18 265 318 568 520 355 187 106 138 187 153 266 318
19 298 326 585 459 356 200 119 184 181 169 253 305
20 321 346 586 431 337 192 126 172 168 219 294 297
21 309 362 589 403 302 173 127 122 162 221 313 396
22 316 385 695 394 276 180 137 133 188 172 297 421
23 319 388 699 401 263 196 212 136 143 160 308 333
24 341 400 611 396 282 195 192 152 130 173 274 335
25 460 459 575 395 307 172 144 143 153 188 263 345
26 472 483 539 395 302 154 120 121 144 179 293 330
27 414 451 541 386 282 147 121 119 154 195 317 339
28 411 432 564 390 267 158 123 265 168 219 309 319
29 361 360 580 410 313 161 110 259 169 219 366 314
30 318   590 374 369 175 103 156 158 200 356 324
31 302   642   323   116 112   183   357