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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
1 241 191 276 279 169 106 76 66 60 54 99 186
2 250 211 282 318 164 105 99 50 63 67 88 166
3 241 214 265 346 149 90 88 103 61 60 99 170
4 263 223 313 312 163 96 63 59 57 69 97 187
5 257 227 359 355 157 97 71 59 46 66 103 177
6 257 202 353 272 157 90 76 51 47 63 97 172
7 210 215 304 248 207 103 67 66 50 55 83 182
8 186 212 283 227 192 96 98 60 37 58 125 198
9 171 171 288 243 190 98 74 83 76 64 108 186
10 178 196 307 247 205 75 83 77 112 59 110 187
11 166 211 276 225 184 73 81 82 77 65 112 214
12 188 202 282 269 222 108 86 78 49 55 117 230
13 192 217 305 271 209 103 81 69 60 47 103 212
14 182 253 317 259 180 108 100 56 93 53 96 188
15 198 239 344 275 175 108 66 73 58 70 104 193
16 177 266 283 245 202 98 62 54 41 85 139 190
17 156 249 298 231 175 91 56 45 54 58 160 179
18 162 266 270 204 189 90 52 54 129 71 146 230
19 222 277 275 184 168 119 91 53 56 73 151 193
20 205 253 315 206 150 98 132 46 47 73 155 187
21 198 280 302 184 145 128 72 67 42 86 134 200
22 193 272 319 175 133 97 72 65 44 72 128 203
23 200 324 277 176 128 143 68 47 47 58 141 192
24 236 295 296 178 141 117 49 41 55 76 144 202
25 237 325 278 184 145 126 55 37 52 69 138 218
26 248 260 259 203 166 101 49 35 50 77 191 202
27 284 264 261 197 138 82 60 36 54 83 194 191
28 218 259 260 190 126 116 56 37 73 103 239 222
29 247 220 320 197 156 94 52 46 85 98 200 240
30 224   314 184 112 69 50 53 68 105 179 278
31 209   314   127   60 75   86   242