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USGS Daily Statistics for the Nation

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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 01388000 Ramapo River at Pompton Lakes NJ


Passaic County, New Jersey
Hydrologic Unit Code 020301030205
Latitude  40°59'31", Longitude  74°16'48" NAD83
Drainage area 160.0  square miles
Gage datum 170.55 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 1921-10-01 -> 2026-09-30)

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
1 352 284 407 632 401 333 174 122 113 165 177 363
2 347 281 416 615 375 349 154 116 225 140 189 366
3 344 353 420 643 348 305 132 130 166 139 229 333
4 333 357 443 620 359 278 134 120 134 132 251 323
5 316 320 455 671 351 264 123 114 113 128 218 335
6 324 287 480 693 357 260 134 110 120 129 204 354
7 326 292 566 659 361 255 146 126 155 129 194 357
8 329 319 540 597 340 262 134 117 157 127 240 376
9 322 292 510 533 344 229 133 112 153 171 310 358
10 359 277 485 544 355 208 140 131 122 138 273 325
11 328 303 544 491 372 194 125 134 110 118 252 340
12 302 321 617 457 390 183 111 130 131 129 254 397
13 292 314 580 473 380 199 126 133 142 167 262 390
14 280 323 627 455 365 204 162 140 146 156 269 387
15 301 329 602 447 373 204 161 126 143 172 260 355
16 289 329 559 543 349 189 151 123 164 212 249 324
17 274 313 544 602 376 190 128 139 231 158 265 326
18 268 317 556 512 348 182 118 138 184 151 260 374
19 298 324 575 461 348 196 129 185 182 165 247 354
20 321 341 574 432 328 189 130 170 167 213 286 316
21 308 355 578 400 295 170 129 122 159 215 303 398
22 312 375 675 390 272 175 137 137 183 168 292 417
23 317 379 685 401 260 190 207 165 141 156 303 346
24 337 391 614 397 279 189 187 168 136 169 273 351
25 450 447 573 393 300 168 141 147 161 183 267 369
26 479 470 534 390 294 152 118 123 156 192 293 355
27 418 441 533 382 275 150 119 119 158 221 317 348
28 413 425 555 385 266 158 120 255 168 229 309 341
29 367 358 571 408 311 159 107 249 179 222 360 332
30 321   577 381 363 170 102 153 171 211 354 335
31 303   625   326   113 110   195   365