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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 -> 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
1 309 268 453 477 530 212 159 115 96 214 114 404
2 348 294 460 370 431 233 166 109 85 266 115 284
3 327 425 523 390 288 283 133 89 61 224 112 227
4 193 521 520 418 289 362 104 102 59 161 240 197
5 220 354 655 434 374 417 90 129 94 138 351 278
6 235 329 639 320 499 343 109 152 200 112 297 269
7 261 400 478 299 455 262 132 97 169 77 207 261
8 355 312 428 306 369 295 112 84 112 68 153 358
9 384 267 487 280 379 196 81 126 70 72 167 371
10 454 294 509 303 383 218 82 79 65 79 118 315
11 397 311 470 327 298 242 96 85 64 139 183 385
12 503 440 393 329 281 156 97 102 102 236 341 311
13 390 463 420 338 222 181 77 97 128 167 346 276
14 324 531 427 342 228 215 77 123 74 129 230 295
15 319 515 331 428 290 155 71 132 61 76 183 297
16 357 508 293 705 435 96 132 95 70 71 261 336
17 336 465 335 710 381 127 111 88 88 66 226 241
18 261 447 413 492 416 115 122 203 150 61 133 259
19 315 406 354 382 371 119 114 200 94 99 124 224
20 465 460 321 362 267 130 71 143 82 131 116 207
21 429 442 404 321 261 139 91 139 151 79 128 218
22 406 416 444 307 276 303 130 140 165 63 118 231
23 282 480 426 293 254 353 102 83 147 121 125 289
24 312 699 528 323 314 217 124 89 119 157 127 321
25 448 708 488 437 337 159 120 88 105 84 187 415
26 404 653 378 415 271 141 95 70 155 67 178 345
27 318 464 402 381 345 312 109 70 151 93 192 316
28 378 412 669 360 304 307 135 68 110 83 359 355
29 376 315 873 376 341 168 126 69 100 93 449 396
30 278   734 413 322 126 88 65 95 155 480 365
31 236   571   259   156 71   129   303