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USGS Daily Statistics for Maryland

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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 01589035 PATAPSCO RIVER NEAR ELKRIDGE, MD


Baltimore County, Maryland
Hydrologic Unit Code 02060003
Latitude  39°13'38.4", Longitude  76°43'22.8" NAD83
Drainage area 312  square miles
Gage datum 8.50 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 2010-10-01 -> 2024-09-30)

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
1 350 387 407 425 887 296 171 160 157 244 445 254
2 363 332 395 351 479 387 157 166 134 214 251 242
3 319 427 363 309 358 544 147 155 106 182 257 214
4 321 551 392 282 368 456 150 547 101 166 192 189
5 283 493 428 276 453 301 151 289 87 168 211 202
6 274 416 375 363 459 281 141 198 165 130 245 184
7 246 391 384 338 546 273 181 190 627 127 221 279
8 225 338 317 354 454 249 273 255 691 123 182 350
9 223 298 324 323 377 246 247 162 605 114 160 266
10 262 268 515 294 336 320 168 151 418 142 195 256
11 314 319 614 269 449 584 152 126 271 247 169 217
12 387 333 523 277 396 382 153 263 231 219 207 202
13 354 349 438 460 399 329 128 200 218 150 247 189
14 278 313 460 367 349 289 132 199 149 157 191 204
15 249 294 411 361 342 229 137 189 133 149 182 361
16 289 374 349 439 587 193 122 164 121 150 289 707
17 289 381 305 382 505 177 116 129 129 128 240 428
18 245 329 295 305 392 175 132 163 189 111 197 307
19 227 296 337 297 455 223 109 120 133 130 174 248
20 402 291 315 398 349 218 115 111 110 141 163 219
21 282 323 382 319 292 224 172 124 102 119 149 331
22 224 354 569 281 285 212 396 274 107 127 182 306
23 226 353 366 279 295 215 500 168 215 115 467 467
24 407 434 384 272 300 240 488 134 188 105 382 372
25 432 519 361 289 258 201 446 112 181 108 463 472
26 336 388 331 274 257 187 482 121 186 137 287 352
27 285 368 330 266 605 325 267 107 238 176 304 384
28 255 361 328 280 417 320 207 195 407 150 213 399
29 228 450 322 320 310 194 233 102 257 626 190 406
30 236   424 1,050 290 176 409 93 264 748 240 380
31 830   523   249   220 91   377   327