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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 03034500 Little Mahoning Creek at McCormick, PA


Indiana County, Pennsylvania
Hydrologic Unit Code 05010006
Latitude  40°50'10", Longitude  79°06'37" NAD27
Drainage area 87.4  square miles
Gage datum 1,163.9 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 1939-10-01 -> 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
1 242 189 274 281 171 107 76 67 60 54 99 187
2 251 211 281 297 166 105 100 49 63 67 88 167
3 243 214 264 303 150 91 89 103 61 60 100 169
4 265 223 313 293 164 97 64 58 57 69 97 183
5 259 228 360 350 158 98 72 59 46 66 104 176
6 258 203 355 269 157 91 76 48 47 63 98 171
7 211 216 304 246 208 104 68 60 50 55 83 182
8 187 213 284 226 192 97 99 59 37 58 126 199
9 169 172 287 243 191 99 75 59 76 64 109 187
10 164 198 299 247 204 76 84 67 112 59 110 188
11 161 213 273 224 184 73 82 79 77 65 113 215
12 186 204 281 242 222 109 87 77 49 55 118 232
13 187 218 306 255 209 104 81 68 60 47 104 213
14 179 255 318 253 181 109 101 55 93 53 97 190
15 197 242 345 263 176 109 67 73 58 70 105 195
16 177 269 283 241 203 99 63 54 41 85 141 191
17 156 251 299 228 176 92 57 44 54 58 162 181
18 163 268 271 198 190 90 52 52 129 71 147 232
19 223 279 277 181 168 120 92 51 56 73 153 194
20 206 256 318 204 151 99 134 45 47 73 156 188
21 199 283 304 183 146 129 73 67 42 86 134 202
22 194 274 321 175 134 98 73 65 44 72 121 205
23 201 325 278 176 129 145 69 47 47 58 138 193
24 237 297 298 178 142 118 49 41 55 76 143 203
25 222 328 280 184 146 128 55 37 52 70 138 220
26 235 262 261 204 167 102 49 35 50 77 192 204
27 279 266 263 198 139 83 61 36 54 84 195 191
28 208 253 262 191 127 117 57 37 73 104 241 218
29 240 199 323 198 157 95 52 46 85 99 202 239
30 221   317 185 112 69 50 53 68 103 180 278
31 207   316   128   61 75   84   243