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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 -> 2021-09-30)

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 17 215 402 509 772 611 469 226 43 11
2 16 17 16 260 406 521 755 596 421 219 30 9.9
3 15 19 14 271 424 509 736 620 411 217 28 9.1
4 13 19 13 282 422 494 752 617 404 215 27 8.7
5 13 17 13 299 421 509 743 621 388 214 27 8.8
6 15 17 14 307 432 513 772 599 381 218 27 9.2
7 17 21 16 325 455 514 772 557 366 219 26 9.6
8 16 24 21 350 470 507 772 545 337 208 24 9.6
9 14 25 28 359 468 522 776 567 326 201 24 9
10 12 19 32 365 476 571 769 580 341 200 22 8.8
11 12 13 27 382 470 599 775 564 321 195 22 8.7
12 12 12 23 383 476 602 790 537 307 196 22 9.9
13 15 17 24 400 482 611 816 515 309 194 21 11
14 16 18 24 411 484 625 756 503 314 186 20 11
15 16 15 23 418 468 661 747 495 310 184 19 15
16 15 14 23 411 472 649 752 494 303 181 18 21
17 14 15 25 395 486 631 727 471 295 181 17 21
18 14 17 26 388 472 681 716 459 281 184 16 18
19 14 16 35 392 462 705 717 466 269 182 15 14
20 15 17 48 407 461 691 719 448 256 185 14 13
21 18 21 59 428 462 686 701 453 250 183 14 14
22 16 23 60 440 459 718 705 476 261 176 15 16
23 15 22 54 439 455 746 720 491 268 174 13 18
24 14 20 59 439 488 737 692 495 259 175 13 17
25 13 20 68 428 498 713 669 509 251 178 14 17
26 15 20 73 422 499 689 641 496 234 180 13 17
27 16 21 81 424 524 696 630 450 224 180 12 15
28 18 19 94 453 530 710 629 464 226 182 12 12
29 18 16 111 442 503 712 660 480 230 180 12 11
30 17   126 407 510 741 631 479 224 180 12 10
31 17   137   500   623 486   165   14