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USGS Daily Statistics for Puerto Rico

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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 50027600 RIO GRANDE DE ARECIBO NR SAN PEDRO, PR


Arecibo Municipio, Puerto Rico
Hydrologic Unit Code 21010002
Latitude  18°23'55.75", Longitude  66°41'29.61" NAD27
Drainage area 173.7  square miles
Gage datum 49.2 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 2000-10-01 -> 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
1 148 289 243 279 451 345 324 408 512 564 645 585
2 287 283 221 268 497 442 344 376 551 583 546 600
3 292 254 217 275 526 409 283 473 951 538 573 554
4 282 344 217 285 437 437 239 384 741 632 661 462
5 231 337 220 266 422 504 312 393 572 611 751 405
6 193 244 261 382 542 443 294 322 543 616 833 405
7 258 262 240 456 842 395 275 347 757 971 735 379
8 303 231 231 369 822 508 271 289 718 1,130 970 346
9 276 240 308 340 882 476 338 328 625 727 800 404
10 289 265 273 319 735 410 254 327 658 745 663 378
11 335 218 237 366 654 425 263 329 562 1,180 672 618
12 276 228 263 338 489 469 299 358 615 904 657 528
13 244 272 314 291 488 390 361 366 704 836 1,420 350
14 337 236 237 399 412 338 415 557 711 761 1,250 380
15 322 256 221 343 540 368 398 598 749 768 1,010 386
16 318 290 215 392 495 353 292 486 799 700 941 402
17 270 250 208 427 456 392 259 504 723 736 731 384
18 286 239 204 394 525 329 313 406 1,130 706 712 380
19 348 188 236 413 478 284 280 457 1,570 713 719 357
20 334 205 277 407 486 400 323 453 2,150 687 775 337
21 280 226 231 428 518 345 336 443 1,260 655 691 290
22 263 213 196 363 453 353 330 491 1,270 597 707 310
23 270 339 209 440 440 392 338 656 970 573 708 311
24 263 257 231 384 580 254 293 834 788 694 665 259
25 295 195 275 475 526 325 261 555 705 725 604 201
26 245 213 287 521 499 307 304 500 709 866 582 299
27 241 204 225 427 446 379 290 544 678 635 596 305
28 260 223 495 508 567 361 357 554 661 640 562 398
29 229 222 404 533 728 337 378 476 729 717 538 403
30 286   251 510 486 285 506 614 619 720 489 341
31 248   301   423   662 604   688   285