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USGS Daily Statistics for Florida

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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 02370000 BLACKWATER RIVER NR BAKER, FLA.


Okaloosa County, Florida
Hydrologic Unit Code 03140104
Latitude  30°50'00", Longitude  86°44'05" NAD27
Drainage area 205.00  square miles
Gage datum 60.50 feet above NGVD29
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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 1949-10-01 -> 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
1 534 443 477 679 317 243 281 516 288 389 208 288
2 560 487 489 697 311 231 282 383 269 319 216 314
3 548 502 535 626 311 277 247 341 243 259 204 309
4 496 482 601 564 349 561 250 292 219 233 186 379
5 451 480 573 594 347 390 269 254 287 219 186 391
6 432 538 583 576 349 281 276 255 273 246 186 351
7 433 609 537 511 335 266 251 281 248 288 170 357
8 470 556 596 476 303 303 258 278 239 284 187 320
9 471 456 753 445 308 447 257 276 258 255 319 272
10 419 407 570 434 309 398 245 259 257 234 261 268
11 389 442 482 479 282 337 246 267 239 218 243 299
12 372 500 444 463 252 310 248 311 217 194 276 333
13 398 516 442 494 253 282 273 286 209 178 286 373
14 421 482 463 573 287 263 276 281 209 184 258 382
15 407 468 445 610 344 268 260 312 230 196 236 386
16 363 512 469 509 329 344 256 300 403 182 228 378
17 347 519 699 400 297 351 252 286 757 193 217 324
18 343 474 611 391 316 294 239 284 442 193 197 292
19 392 576 614 415 300 264 234 296 301 199 198 298
20 417 569 539 381 305 282 244 299 243 198 203 303
21 473 490 442 317 295 343 263 294 250 169 214 354
22 497 501 390 291 278 338 266 273 291 158 213 388
23 485 516 376 299 288 321 280 243 344 167 233 391
24 463 516 399 313 274 282 282 231 342 167 241 419
25 534 509 395 329 250 241 295 231 312 181 244 484
26 568 540 369 317 240 235 279 245 307 179 242 493
27 497 534 387 309 299 268 267 242 319 179 257 415
28 441 521 517 338 326 270 255 231 398 209 279 360
29 387 397 630 299 314 256 264 212 553 226 297 414
30 447   552 322 280 284 313 234 498 222 295 420
31 453   556   254   486 288   213   444