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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 01672500 SOUTH ANNA RIVER NEAR ASHLAND, VA


Hanover County, Virginia
Hydrologic Unit Code 02080106
Latitude  37°47'48", Longitude  77°32'57" NAD27
Drainage area 395  square miles
Gage datum 82.70 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 1930-10-01 -> 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
1 500 431 579 688 438 327 185 142 161 217 222 448
2 513 461 570 642 404 308 151 153 171 225 231 413
3 560 489 559 593 430 309 150 164 154 219 229 351
4 536 520 549 579 449 306 156 190 100 201 240 348
5 492 561 593 560 429 294 177 183 109 169 250 356
6 491 558 624 534 421 281 174 205 229 188 266 399
7 464 553 707 566 404 270 195 222 255 229 305 430
8 443 573 700 631 390 224 175 184 285 256 320 399
9 486 523 640 598 394 224 163 122 316 314 309 401
10 523 488 555 556 379 229 140 148 192 277 273 410
11 520 532 534 521 344 253 129 157 133 195 259 463
12 495 547 567 468 343 271 154 204 140 200 373 484
13 483 572 624 491 340 291 188 211 155 157 395 439
14 517 613 649 541 358 249 233 182 142 171 393 446
15 515 625 676 539 378 235 198 194 135 159 388 407
16 520 645 637 574 383 192 208 191 112 151 315 432
17 501 621 589 614 395 172 250 212 106 160 300 433
18 466 613 592 583 439 181 224 258 155 167 275 406
19 478 596 606 515 428 198 195 303 216 188 234 358
20 514 575 625 467 391 183 185 355 216 224 264 353
21 542 582 637 453 393 196 211 404 218 315 292 404
22 588 569 644 420 387 327 197 407 188 318 288 400
23 574 576 633 408 350 282 169 356 176 294 282 419
24 519 614 622 388 305 297 182 298 205 263 276 456
25 541 635 630 427 266 298 165 228 176 246 278 456
26 609 615 617 542 259 235 182 168 192 193 289 417
27 583 619 561 598 292 183 178 155 194 224 297 433
28 540 578 608 640 289 185 158 113 176 272 327 463
29 561 465 682 597 320 181 147 113 169 274 331 475
30 513   702 518 355 185 159 145 169 255 392 488
31 459   689   333   151 139   246   487