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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 01589000 PATAPSCO RIVER AT HOLLOFIELD, MD


Baltimore County, Maryland
Hydrologic Unit Code 02060003
Latitude  39°18'37.1", Longitude  76°47'32.7" NAD83
Drainage area 285  square miles
Gage datum 186.9 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 1943-10-01 -> 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
1 323 234 287 340 349 263 180 154 169 183 163 168
2 273 261 280 327 264 371 145 134 103 156 129 167
3 211 280 265 301 260 280 154 119 84 141 153 152
4 210 298 263 290 296 249 142 242 114 114 143 199
5 209 252 294 327 287 231 148 170 105 108 141 170
6 209 278 304 307 337 230 148 146 157 105 134 190
7 189 365 295 301 274 221 138 160 145 103 150 207
8 179 281 272 284 252 209 165 119 167 100 142 223
9 225 236 264 276 240 180 164 107 161 124 116 220
10 203 232 257 286 231 200 145 126 148 157 144 197
11 201 241 304 246 243 229 133 110 166 147 130 314
12 211 282 301 241 258 182 130 124 186 125 138 227
13 198 290 284 326 245 210 165 201 133 111 145 213
14 218 309 320 334 237 235 148 127 130 119 143 208
15 204 276 296 331 240 173 157 112 101 117 123 204
16 198 254 262 318 320 165 132 92 93 104 143 283
17 175 263 264 295 294 165 125 115 95 97 130 224
18 173 238 251 260 283 152 185 130 121 125 127 217
19 174 258 285 241 272 185 137 102 131 126 124 172
20 243 241 274 242 253 208 126 103 98 115 166 163
21 245 244 311 225 233 199 282 97 101 108 186 223
22 208 264 342 222 239 631 186 118 126 100 205 222
23 185 295 334 223 246 281 218 98 172 148 189 200
24 263 285 309 232 242 242 192 85 170 115 163 202
25 271 308 273 246 256 189 158 93 185 109 251 211
26 309 347 312 292 305 164 166 84 481 125 186 220
27 240 304 293 365 244 196 131 138 207 139 160 206
28 228 292 278 305 257 167 127 113 185 127 189 199
29 208 279 291 261 237 161 117 83 143 198 232 205
30 205   317 372 241 207 147 76 141 211 192 244
31 300   332   250   119 79   149   229