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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 01670400 NORTH ANNA RIVER NEAR PARTLOW, VA


Louisa County, Virginia
Hydrologic Unit Code 02080106
Latitude  38°00'46", Longitude  77°42'05" NAD27
Drainage area 342  square miles
Gage datum 167.45 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 -> 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
1 316 242 463 489 543 216 159 115 98 219 116 414
2 357 290 472 379 442 233 166 109 87 272 117 291
3 335 432 531 400 294 283 133 89 61 229 114 233
4 197 533 526 429 291 362 104 102 60 164 246 201
5 225 363 654 446 374 417 90 129 96 141 360 284
6 240 312 627 327 499 343 109 152 204 114 305 276
7 267 362 487 293 465 262 132 97 173 78 212 268
8 364 288 436 293 377 295 112 84 114 68 156 367
9 394 264 499 284 382 196 81 126 71 73 170 380
10 466 293 521 310 392 218 82 79 66 80 120 323
11 408 309 482 324 305 242 96 85 64 142 187 395
12 516 436 403 314 287 156 97 102 104 241 349 319
13 400 436 431 339 219 181 77 97 131 171 355 283
14 332 506 438 346 194 215 77 123 75 132 236 303
15 327 511 339 431 258 155 71 132 62 78 187 304
16 366 471 297 721 410 96 132 95 71 72 267 345
17 345 412 335 728 382 127 111 88 90 67 231 247
18 267 415 421 505 419 115 122 203 153 62 136 265
19 323 387 363 391 380 119 114 204 95 100 126 229
20 477 463 328 371 273 130 71 146 83 134 118 212
21 440 450 411 329 263 139 91 141 154 80 130 223
22 416 426 452 314 279 303 130 143 168 64 120 237
23 289 488 434 300 259 353 102 84 150 123 127 296
24 319 714 538 330 321 217 124 90 121 160 130 329
25 459 727 500 448 345 159 120 90 107 85 192 426
26 414 671 388 423 277 141 95 70 159 68 182 354
27 326 476 412 367 350 312 109 70 154 94 196 324
28 387 423 687 366 286 307 135 68 112 84 368 365
29 386 315 896 385 311 168 126 70 101 94 461 406
30 284   754 423 291 126 88 65 96 158 493 374
31 241   586   253   156 72   132   310