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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 -> 2022-09-30)

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
1 328 378 397 405 1,010 298 158 162 162 226 434 245
2 352 317 379 338 465 403 149 171 140 211 244 236
3 305 408 347 299 346 597 139 160 112 182 254 208
4 306 530 342 273 370 462 144 608 106 154 188 181
5 271 477 391 282 474 312 148 303 92 155 209 194
6 265 405 353 331 448 300 141 199 132 126 251 178
7 235 382 359 312 403 278 177 179 578 124 223 262
8 216 327 296 314 353 228 291 243 655 124 179 349
9 214 289 310 297 327 229 247 163 648 115 158 267
10 250 260 475 277 309 318 163 153 422 145 194 250
11 309 312 620 257 446 594 154 121 259 238 163 209
12 360 319 512 272 399 409 155 222 237 207 188 193
13 332 322 427 483 400 345 126 197 190 139 246 179
14 260 295 454 380 345 301 130 204 152 141 188 195
15 239 277 400 369 346 232 138 188 140 140 177 298
16 282 358 342 453 668 196 116 158 129 138 270 609
17 278 334 300 401 529 176 110 130 134 119 231 396
18 235 301 289 310 401 175 129 163 178 103 192 292
19 217 274 326 285 465 231 103 120 138 123 169 237
20 383 270 306 404 351 226 113 111 115 131 158 210
21 270 304 396 322 292 233 155 129 108 112 146 316
22 215 330 555 277 286 222 358 291 111 118 180 285
23 213 330 359 273 287 207 515 176 223 107 481 358
24 391 405 374 272 299 241 442 139 164 99 406 342
25 417 496 343 288 261 206 446 116 175 102 472 443
26 321 377 315 281 257 190 500 121 194 125 288 334
27 274 357 314 271 564 346 265 112 255 169 293 365
28 244 347 315 270 384 306 196 196 445 143 209 381
29 218 416 309 300 307 199 208 108 269 607 187 386
30 233   401 1,180 286 175 461 99 275 758 230 356
31 875   490   247   207 94   375   310