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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 -> 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
1 317 358 381 384 913 268 156 145 141 205 405 234
2 337 302 364 324 436 354 143 153 122 192 229 224
3 292 385 334 286 328 518 132 142 98 170 239 201
4 293 497 362 261 348 403 137 520 93 156 177 177
5 260 448 394 257 432 275 138 267 82 152 197 186
6 255 382 351 330 431 264 130 183 151 119 236 171
7 227 361 353 313 521 246 164 172 504 118 210 249
8 209 310 293 329 426 225 257 232 563 114 169 328
9 206 275 303 297 353 220 224 149 557 106 150 253
10 239 248 453 271 314 284 152 138 364 139 183 236
11 294 296 590 247 418 515 140 114 248 224 157 199
12 341 304 488 257 372 358 140 196 219 196 187 184
13 317 320 408 433 372 304 115 173 200 134 235 171
14 251 285 434 344 328 267 120 179 141 140 180 185
15 229 266 383 337 324 207 127 166 127 135 172 320
16 269 345 327 405 595 176 111 141 116 133 276 637
17 266 356 287 359 473 159 106 117 120 115 225 386
18 225 307 278 285 362 157 119 143 158 100 185 283
19 209 274 312 276 417 205 98 107 124 118 163 230
20 365 268 293 368 319 200 104 99 103 125 153 205
21 258 299 375 295 269 206 150 114 97 108 141 302
22 208 322 521 258 263 198 315 251 100 113 172 280
23 210 322 341 256 272 195 444 154 202 103 450 434
24 373 390 357 249 273 220 386 123 168 96 380 342
25 398 472 333 262 240 187 384 103 166 99 441 425
26 313 360 307 255 234 173 429 107 175 120 271 322
27 265 342 303 248 496 306 231 99 224 160 277 349
28 236 337 303 263 371 274 174 170 384 136 199 364
29 211 416 297 299 285 179 188 95 234 564 178 367
30 225   381 1,040 262 162 399 88 239 704 219 339
31 818   462   226   183 84   350   297