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USGS Daily Statistics for Virginia

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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 -> 2020-09-30)

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
1 329 231 465 461 565 233 173 120 55 233 76 381
2 338 287 451 360 462 256 177 118 54 281 88 267
3 324 450 550 387 323 313 139 95 54 252 112 226
4 193 562 556 409 316 402 107 110 59 179 262 210
5 217 346 677 438 404 465 91 135 101 153 391 246
6 238 296 633 327 541 381 118 153 224 122 328 236
7 241 377 516 299 458 290 145 102 189 82 223 248
8 368 299 459 303 385 327 122 89 122 72 162 373
9 359 275 471 294 403 215 85 138 74 77 182 414
10 307 303 512 326 425 238 85 83 68 85 128 357
11 322 301 503 341 333 254 104 89 66 154 165 437
12 495 408 405 298 314 154 105 109 111 229 163 349
13 375 415 439 358 238 177 82 100 142 167 210 300
14 307 524 456 369 207 190 82 88 78 139 167 292
15 312 508 348 461 268 143 74 119 62 81 150 291
16 372 395 304 792 442 101 116 92 63 75 251 306
17 351 356 340 807 417 112 98 86 84 70 222 179
18 276 374 393 545 436 101 98 220 158 64 146 185
19 339 354 351 424 398 118 115 217 102 107 135 177
20 514 441 345 407 295 135 71 150 88 146 121 180
21 470 456 449 363 283 150 97 146 168 85 135 207
22 444 446 504 343 306 328 142 150 184 66 126 230
23 301 494 425 327 283 379 109 89 164 133 127 236
24 329 751 480 364 343 229 135 96 131 176 136 274
25 472 759 486 491 370 158 131 95 115 90 209 298
26 396 699 389 460 293 139 78 74 174 71 198 287
27 330 497 415 399 356 333 107 74 168 101 215 268
28 344 440 696 363 267 331 144 71 121 89 409 330
29 339 323 970 343 307 180 135 70 107 65 508 394
30 244   830 430 313 135 83 67 91 68 496 393
31 232   627   270   162 60   72   322