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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 01589025 PATAPSCO RIVER NEAR CATONSVILLE, MD


Baltimore County, Maryland
Hydrologic Unit Code 02060003
Latitude  39°15'04.5", Longitude  76°45'49.6" NAD83
Drainage area 301  square miles
Gage datum 66.20 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 -> 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
1 346 430 334 411 1,090 308 159 181 151 257 473 258
2 288 356 355 341 496 427 142 191 117 240 256 260
3 284 460 341 307 367 640 140 179 107 206 274 230
4 300 587 347 280 363 448 149 666 94 172 199 197
5 273 523 415 280 472 312 157 345 92 173 228 182
6 273 446 376 336 455 308 150 222 143 139 279 184
7 241 418 387 317 415 290 192 201 690 137 247 291
8 224 355 313 321 352 233 334 281 785 137 196 397
9 221 314 331 301 325 241 281 185 741 126 171 300
10 264 282 528 279 312 349 179 171 484 163 215 280
11 341 343 705 245 468 619 167 133 293 274 169 232
12 405 354 569 258 418 359 171 194 270 224 151 212
13 371 357 467 496 422 336 135 205 215 146 252 196
14 286 326 506 387 364 302 142 219 169 154 194 194
15 261 305 441 374 366 222 153 207 156 155 185 320
16 313 357 375 470 721 196 126 158 138 153 299 695
17 271 348 325 416 565 178 113 130 134 128 255 414
18 246 314 304 318 427 177 123 161 199 110 209 318
19 231 282 340 292 499 249 106 120 153 136 182 258
20 418 282 326 424 373 217 121 114 126 145 170 227
21 287 330 436 334 310 232 173 139 118 123 157 354
22 232 358 631 285 304 190 419 338 121 130 197 314
23 230 352 398 282 306 180 613 198 144 117 558 401
24 442 437 351 282 318 232 519 154 159 107 468 369
25 475 533 329 294 275 205 528 127 185 100 549 362
26 359 391 321 288 271 193 596 132 212 99 327 351
27 306 356 328 281 600 389 310 122 290 184 333 395
28 269 311 326 281 402 344 226 226 527 156 233 418
29 238 416 320 314 283 216 236 111 313 572 207 425
30 259   441 1,280 276 189 541 100 317 764 215 392
31 1,030   542   245   234 91   380   338