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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 -> 2025-09-30)

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
1 240 191 278 277 169 107 76 66 60 54 98 185
2 249 211 283 315 164 104 99 50 63 67 87 165
3 240 213 265 343 149 90 88 103 60 59 98 169
4 261 223 312 311 165 96 63 59 57 69 96 186
5 255 227 357 359 158 97 71 59 46 66 102 176
6 255 202 353 277 158 90 76 51 46 63 96 170
7 208 215 303 251 207 103 67 66 50 55 82 180
8 185 212 282 228 192 96 98 60 37 58 124 196
9 170 173 287 244 189 98 74 83 75 64 107 188
10 177 197 305 247 204 75 83 77 111 58 108 191
11 165 211 275 226 183 73 81 82 77 64 111 216
12 187 202 280 270 220 108 86 78 48 55 116 231
13 190 218 303 270 207 103 81 69 59 47 102 212
14 180 253 315 258 180 108 100 56 92 53 95 188
15 197 239 341 274 174 108 66 73 58 70 103 192
16 176 276 281 244 201 98 62 54 41 84 138 190
17 155 256 297 230 174 91 56 45 53 58 158 181
18 161 267 269 202 187 90 52 54 127 70 145 230
19 220 277 274 183 166 119 91 53 56 73 150 194
20 203 253 313 204 149 98 132 46 46 72 153 187
21 196 279 300 183 144 128 72 67 42 85 134 200
22 192 271 316 174 138 97 72 65 44 71 128 202
23 198 322 274 175 133 143 68 47 47 57 142 191
24 234 294 293 176 144 117 49 41 54 76 145 201
25 234 323 276 182 146 126 55 37 51 68 139 217
26 246 259 257 204 166 101 49 35 50 76 193 201
27 281 271 258 198 138 82 60 36 54 83 194 189
28 216 262 258 190 126 116 56 37 73 102 239 220
29 244 220 317 196 156 94 52 46 84 97 200 239
30 222   311 183 112 69 50 52 67 104 179 275
31 207   311   127   60 74   85   240