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USGS Surface-Water Daily Statistics for Colorado

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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 07130500 ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, CO.


Bent County, Colorado
Hydrologic Unit Code 11020009
Latitude  38°03'59", Longitude 102°55'55" NAD27
Drainage area 18,494  square miles
Contributing drainage area 17,709  square miles
Gage datum 3,737.40 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 1948-10-01 -> 2023-09-30)

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 16 19 17 212 398 512 767 606 458 222 42 11
2 15 17 16 256 404 523 752 590 412 215 29 9.7
3 15 18 14 267 422 511 733 614 402 212 27 9
4 12 19 13 279 420 496 750 612 395 211 26 8.6
5 13 17 13 295 418 511 741 617 380 209 26 8.7
6 15 17 14 303 428 515 767 595 372 214 26 9.1
7 17 21 16 320 452 515 768 553 358 214 25 9.5
8 16 24 21 346 469 510 768 540 330 203 23 9.4
9 14 24 28 354 469 524 772 562 319 196 24 8.9
10 12 19 31 360 477 572 766 574 333 195 22 8.7
11 12 13 26 377 471 599 771 558 313 190 22 8.6
12 12 12 23 378 477 602 783 531 300 191 22 9.8
13 15 17 24 395 483 610 809 509 302 190 20 11
14 16 17 24 406 484 623 749 497 306 181 19 11
15 16 15 23 413 469 659 740 487 303 180 19 15
16 14 13 23 405 473 647 746 483 296 177 18 21
17 14 15 24 389 487 630 721 461 289 177 17 21
18 14 17 25 383 473 680 709 448 275 179 15 18
19 14 16 35 387 464 704 709 457 263 178 14 14
20 15 17 47 402 463 689 711 441 251 181 14 13
21 17 20 58 423 464 684 693 446 245 178 14 14
22 16 23 59 435 461 716 697 467 255 172 15 16
23 15 22 53 434 457 742 711 481 262 170 13 18
24 14 20 58 434 490 733 684 485 253 171 13 17
25 13 20 67 424 501 708 662 498 245 174 13 17
26 14 19 72 417 503 683 637 485 229 176 13 16
27 16 20 80 419 527 691 625 441 220 176 12 15
28 18 19 93 447 531 706 623 454 222 178 12 12
29 18 16 109 437 504 708 657 470 226 176 12 11
30 16   124 403 512 736 630 469 220 175 12 9.9
31 17   135   503   620 476   161   13