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USGS Daily Statistics for New York

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 01387500 Ramapo River near Mahwah NJ


Bergen County, New Jersey
Hydrologic Unit Code 02030103
Latitude  41°05'53", Longitude  74°09'46" NAD83
Drainage area 120  square miles
Contributing drainage area 120  square miles
Gage datum 253.10 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 1902-10-01 -> 2019-09-30)

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
1 269 229 331 508 289 255 144 90 83 129 145 292
2 277 237 334 499 269 261 117 87 123 116 157 293
3 276 288 338 509 259 222 101 94 101 120 218 268
4 264 280 375 486 271 201 99 85 93 112 219 273
5 257 246 375 562 264 192 92 87 80 107 181 278
6 269 222 388 533 275 184 94 85 89 113 168 293
7 275 231 443 498 273 196 104 99 109 108 164 297
8 290 256 413 432 252 196 94 83 113 116 224 310
9 275 232 419 415 255 166 90 79 109 233 260 293
10 265 226 375 446 262 155 84 98 85 161 231 273
11 251 256 436 387 293 143 77 101 76 123 213 285
12 247 265 475 358 307 137 69 93 107 137 221 328
13 240 258 471 365 288 151 93 109 111 166 219 322
14 238 268 512 346 278 153 122 105 109 148 223 315
15 254 267 466 364 290 157 113 93 115 176 217 284
16 231 264 434 467 267 145 98 96 147 187 205 270
17 215 251 427 471 299 141 81 108 196 134 226 275
18 222 255 447 390 265 136 79 99 155 136 224 274
19 249 258 461 344 263 144 91 152 140 151 211 251
20 253 275 461 327 240 138 89 123 128 199 241 259
21 257 281 467 307 219 125 88 93 126 184 261 374
22 264 312 578 309 200 146 106 104 138 165 247 357
23 266 309 547 314 191 155 145 95 106 150 255 281
24 298 319 493 304 213 145 130 125 98 155 217 288
25 391 379 472 302 227 128 97 104 115 162 219 287
26 375 379 437 296 218 112 85 85 109 156 247 272
27 330 346 443 291 203 107 86 83 123 169 259 281
28 322 340 462 296 206 120 84 229 130 204 259 259
29 286 288 476 305 272 114 73 182 127 193 308 257
30 253   478 285 262 144 76 112 121 172 293 270
31 241   520   225   91 84   152   288