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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 -> 2021-09-30)

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
1 348 404 421 430 1,010 298 160 170 144 239 441 260
2 367 338 403 354 465 403 141 178 114 224 243 250
3 319 432 367 313 346 597 138 168 111 192 258 220
4 323 545 363 285 370 462 144 661 107 161 189 190
5 286 489 417 282 474 312 151 327 94 162 215 204
6 280 420 376 331 448 300 145 212 138 131 262 186
7 247 400 382 312 403 278 185 191 629 129 232 279
8 227 341 312 314 353 228 311 261 713 129 185 373
9 224 300 326 297 327 229 262 174 673 119 163 284
10 260 270 504 277 309 318 170 161 448 153 203 265
11 328 328 664 257 446 594 161 126 273 254 169 221
12 385 336 540 272 399 409 162 238 251 220 187 203
13 353 338 447 483 400 345 130 210 200 145 250 188
14 275 311 481 380 345 301 136 217 159 147 191 205
15 253 292 422 369 346 232 145 200 146 147 180 318
16 301 381 359 453 668 196 120 168 130 145 283 657
17 261 355 314 401 529 176 108 130 126 122 242 424
18 237 317 302 310 401 175 117 156 185 106 200 311
19 224 288 343 285 465 231 101 118 143 129 175 251
20 393 284 322 404 351 226 114 111 118 137 164 222
21 274 323 419 322 292 243 162 133 111 117 151 337
22 224 351 594 277 286 224 384 311 114 124 188 304
23 221 350 381 273 287 208 559 185 134 112 516 383
24 415 432 391 272 299 251 479 146 148 102 434 366
25 443 525 353 288 261 215 483 121 172 97 507 477
26 339 392 330 281 257 199 543 125 198 96 306 357
27 291 375 329 271 564 371 285 116 268 173 311 391
28 257 366 331 270 384 327 209 210 480 147 220 409
29 229 416 326 300 307 211 218 113 287 559 196 413
30 248   428 1,180 286 184 494 103 295 720 244 379
31 948   526   247   220 90   357   329