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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 01470960 Tulpehocken Cr at Blue Marsh Damsite near Reading


Berks County, Pennsylvania
Hydrologic Unit Code 02040203
Latitude  40°22'14", Longitude  76°01'32" NAD27
Drainage area 175  square miles
Contributing drainage area 175  square miles
Gage datum 229.2 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 1978-10-01 -> 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
1 302 345 413 363 288 287 262 155 206 221 270 368
2 319 297 402 319 327 282 266 186 159 216 250 331
3 355 328 400 286 325 292 255 234 188 242 235 374
4 342 393 419 329 345 245 245 176 223 248 242 348
5 333 411 401 367 324 247 228 226 230 245 218 310
6 305 368 416 356 269 246 215 254 214 237 215 335
7 281 329 440 340 287 268 210 217 184 222 211 364
8 290 321 423 295 338 247 238 165 208 216 177 351
9 298 325 421 264 358 222 218 142 304 209 180 321
10 310 292 424 260 357 217 227 152 303 208 214 308
11 359 264 425 265 313 242 192 165 297 218 213 305
12 346 285 449 297 286 273 209 192 282 241 198 324
13 342 309 453 321 293 249 216 181 254 220 210 324
14 332 310 459 353 297 241 266 220 235 228 222 360
15 294 299 471 360 283 235 271 244 235 240 218 468
16 275 307 485 340 302 224 226 196 205 255 234 459
17 290 337 455 419 317 213 207 148 193 253 255 420
18 297 350 399 481 324 211 236 149 180 242 289 375
19 313 354 384 452 306 219 218 190 215 262 284 366
20 351 354 399 408 334 259 193 164 270 283 255 371
21 390 359 411 332 329 269 182 164 268 312 249 354
22 411 368 461 305 323 227 164 213 258 294 252 327
23 387 379 463 288 299 238 203 235 203 274 261 301
24 377 403 441 257 259 278 248 191 165 267 268 315
25 382 413 421 273 241 285 235 164 164 243 263 338
26 418 394 405 298 220 297 222 153 174 232 264 390
27 415 397 403 306 219 282 212 139 163 233 265 383
28 382 412 409 295 219 308 194 142 172 256 272 372
29 413 565 405 301 221 301 171 156 178 275 330 352
30 403   417 302 296 261 156 188 199 277 395 334
31 395   401   296   155 208   267   313