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USGS 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 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 -> 2025-09-30)

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
1 334 385 391 446 837 284 168 152 152 237 393 239
2 346 331 400 477 457 368 152 161 130 208 225 230
3 305 417 370 478 343 513 142 160 103 178 229 207
4 306 530 388 400 353 431 144 519 98 162 173 182
5 270 474 426 339 443 302 145 274 85 162 190 193
6 273 401 375 396 445 294 136 188 157 126 219 176
7 259 377 380 360 523 273 173 183 586 124 199 263
8 223 327 315 367 436 246 258 251 646 120 164 329
9 331 289 338 334 364 240 233 293 566 111 146 251
10 368 261 561 304 328 306 160 246 392 137 176 247
11 321 308 621 280 434 551 145 164 255 235 156 258
12 379 321 521 290 391 362 145 270 218 197 188 207
13 375 370 437 457 390 312 127 202 206 137 221 187
14 281 330 452 366 340 275 127 197 142 143 172 198
15 249 300 404 359 336 221 132 185 126 139 164 342
16 285 370 346 430 562 186 118 160 116 138 258 663
17 284 376 302 376 483 170 114 127 122 118 215 411
18 241 324 291 303 378 168 128 190 179 103 186 478
19 223 292 329 295 439 213 105 143 128 120 164 259
20 384 285 307 389 338 208 110 115 106 129 154 221
21 273 314 370 315 284 213 163 124 98 111 150 320
22 218 343 541 279 275 202 373 261 112 117 215 296
23 221 348 385 275 284 204 471 162 206 106 445 443
24 390 420 396 268 289 227 459 129 179 98 362 355
25 419 497 363 283 249 191 419 109 173 101 435 446
26 331 374 330 268 248 178 452 118 201 126 272 335
27 280 355 333 260 594 307 252 105 233 159 288 376
28 328 349 331 274 422 302 196 187 388 137 203 408
29 275 394 322 311 305 184 220 100 248 549 181 394
30 260   413 987 283 183 384 94 253 655 227 365
31 801   504   241   208 90   334   314