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USGS Daily Statistics for the Nation

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 -> 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
1 319 230 297 340 346 262 178 151 168 179 165 168
2 283 256 285 326 262 367 146 132 106 153 131 165
3 216 276 268 299 258 279 153 117 84 138 153 150
4 213 295 264 288 299 254 141 241 114 112 142 196
5 210 251 292 326 289 232 146 167 104 107 140 172
6 209 275 301 306 337 230 146 144 154 104 132 189
7 189 360 292 301 274 220 136 158 143 101 148 204
8 179 278 270 283 253 208 162 117 164 99 141 219
9 223 233 262 276 241 179 161 106 163 122 115 216
10 201 229 255 285 232 198 143 124 146 153 142 194
11 199 238 300 247 243 234 131 108 164 144 129 307
12 209 277 299 244 257 192 128 124 182 125 144 223
13 196 285 281 327 244 214 162 198 131 110 146 209
14 215 303 316 334 235 237 145 125 128 117 143 207
15 201 271 292 330 238 175 154 110 100 115 123 203
16 195 255 259 317 317 165 130 93 93 103 142 279
17 177 262 261 294 291 165 124 115 95 96 129 225
18 172 237 250 260 281 152 183 131 120 123 126 214
19 173 256 283 241 269 184 136 102 129 124 123 170
20 241 240 271 241 251 210 124 102 97 113 163 161
21 242 241 307 224 231 200 275 96 99 107 182 220
22 205 261 336 221 237 621 183 116 124 99 201 219
23 183 292 329 222 244 281 213 97 184 145 185 198
24 258 283 311 230 240 242 188 84 169 114 160 201
25 266 307 276 245 253 189 155 92 183 108 246 226
26 303 345 311 291 302 164 163 84 470 127 183 220
27 236 305 291 362 243 194 129 136 203 137 158 206
28 225 298 276 303 255 166 125 111 181 125 186 198
29 205 279 290 260 241 160 115 83 141 210 227 204
30 202   313 370 243 203 145 76 139 224 194 242
31 293   328   250   117 80   154   227