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USGS
Water Resources of Colorado


ARKANSAS RIVER BASIN

07099400 ARKANSAS RIVER ABOVE PUEBLO, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1965 to September 1970, December 1985 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07099400

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: December 1985 to current year.

WATER TEMPERATURE: December 1985 to current year.

INSTRUMENTATION.--Water-quality monitor with satellite telemetry.

REMARKS.--Daily specific-conductance records are good except for Oct. 1, 12, 15-16, 23, Jan. 16, Apr. 27, 29, and May 8, which are fair. Daily water-temperature records are good except for Oct. 1, 12-23, and Nov. 16 to Jan. 16, which are fair. Daily data that are not published are either missing or of unacceptable quality. Specific conductance data may not be representative of the river at the site during periods of transient hydrologic conditions caused by abrupt flow changes from Pueblo Reservoir.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: Maximum, 1,670 microsiemens/cm, Sept. 30, 2002; minimum, 223 microsiemens/cm, July 13, 1986.

WATER TEMPERATURE: Maximum, 26.9°C, Aug. 31, Sept. 5, 2002; minimum, 0.8°C, Dec. 26, 2003.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum recorded, 808 microsiemens/cm, Nov. 16, but was probably higher during periods of unreliable record, Oct. 1, 12-30, and Nov. 17 to Jan. 16; minimum, 315 microsiemens/cm, June 22.

WATER TEMPERATURE: Maximum, 23.4°C, Aug. 17; minimum, 0.8°C, Dec. 26.

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Instan-
taneous
dis-
charge,
cfs
(00061)
Dis-
solved
oxygen,
mg/L
(00300)
pH,
water,
unfltrd
field,
std
units
(00400)
Specif.
conduc-
tance,
wat unf
uS/cm
25 degC
(00095)
Temper-
ature,
water,
deg C
(00010)
Ammonia
water,
fltrd,
mg/L
as N
(00608)
Nitrite
+
nitrate
water
fltrd,
mg/L
as N
(00631)
Nitrite
water,
fltrd,
mg/L
as N
(00613)
Ortho-
phos-
phate,
water,
fltrd,
mg/L
as P
(00671)
Phos-
phorus,
water,
fltrd,
mg/L
(00666)
Phos-
phorus,
water,
unfltrd
mg/L
(00665)
Organic
carbon,
water,
fltrd,
mg/L
(00681)
APR
23...
1315
225
10.3
8.4
643
10.0
0.048
0.223
0.007
<0.007
0.005
0.015
2.1
JUN
18...
1300
1,590
9.0
8.0
355
17.5
E.011
0.362
0.017
E.006
0.011
0.065
2.2
JUL
31...
1215
237
8.5
8.1
342
22.0
0.065
0.182
0.005
0.008
0.014
0.034
2.3
AUG
26...
0915
191
7.8
8.3
366
22.5
0.072
0.089
E.002
E.004
0.009
0.031
2.3
SEP
29...
1000
40
9.7
8.4
419
17.5
E.011
0.107
0.008
E.004
0.006
0.021
2.2

< -- Actual value is known to be less than the value shown.
E -- Estimated laboratory analysis value.

WATER-QUALITY DATA COLLECTED AS PART OF PREFERRED STORAGE OPTIONS PLAN,
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Instan-
taneous
dis-
charge,
cfs
(00061)
Dis-
solved
oxygen,
mg/L
(00300)
pH,
water,
unfltrd
field,
std
units
(00400)
Specif.
conduc-
tance,
wat unf
uS/cm
25 degC
(00095)
Temper-
ature,
water,
deg C
(00010)
Calcium
water,
fltrd,
mg/L
(00915)
Magnes-
ium,
water,
fltrd,
mg/L
(00925)
Potas-
sium,
water,
fltrd,
mg/L
(00935)
Sodium,
water,
fltrd,
mg/L
(00930)
ANC,
wat unf
fixed
end pt,
lab,
mg/L as
CaCO3
(90410)
Chlor-
ide,
water,
fltrd,
mg/L
(00940)
Fluor-
ide,
water,
fltrd,
mg/L
(00950)
DEC
17...
1030
0.72
9.3
8.1
822
4.5
95.7
28.0
3.54
44.0
E177
11.7
0.81
MAR
10...
1210
27
12.0
8.5
653
6.0
70.3
22.8
3.08
36.0
138
10.9
0.63
MAY
28...
0745
2,020
8.9
8.3
660
14.5
65.1
20.8
3.17
34.1
137
13.4
0.6
AUG
26...
0915
191
7.8
8.3
366
22.5
43.1
10.4
2.17
15.8
95
5.91
0.5

WATER-QUALITY DATA COLLECTED AS PART OF PREFERRED STORAGE OPTIONS PLAN,
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Sulfate
water,
fltrd,
mg/L
(00945)
DEC
17...
248
MAR
10...
182
MAY
28...
182
AUG
26...
77.8

E -- Estimated laboratory analysis value.

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius 
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAY
MAX
MIN
MEAN
MAX
MIN
MEAN
MAX
MIN
MEAN
MAX
MIN
MEAN
OCTOBER
NOVEMBER
DECEMBER
JANUARY
1

---

697

---

681

665

673

---

---

---

---

---

---

2

700

675

688

683

666

675

---

---

---

---

---

---

3

682

662

672

679

659

672

---

---

---

---

---

---

4

669

661

666

675

659

668

---

---

---

---

---

---

5

670

664

668

673

658

667

---

---

---

---

---

---

6

671

665

668

674

657

668

---

---

---

---

---

---

7

671

664

668

673

651

666

---

---

---

---

---

---

8

687

663

671

674

657

668

---

---

---

---

---

---

9

750

670

698

673

651

666

---

---

---

---

---

---

10

732

680

702

673

656

668

---

---

---

---

---

---

11

778

683

713

673

652

667

---

---

---

---

---

---

12

---

705

---

673

655

667

---

---

---

---

---

---

13

---

---

---

673

660

668

---

---

---

---

---

---

14

---

---

---

680

661

674

---

---

---

---

---

---

15

---

718

---

715

679

692

---

---

---

---

---

---

16

---

684

---

808

715

754

---

---

---

---

680

---

17

---

---

---

---

---

---

---

---

---

687

669

678

18

---

---

---

---

---

---

---

---

---

688

673

680

19

---

---

---

---

---

---

---

---

---

694

679

685

20

---

---

---

---

---

---

---

---

---

712

683

690

21

---

---

---

---

---

---

---

---

---

690

675

681

22

---

---

---

---

---

---

---

---

---

682

676

679

23

---

709

---

---

---

---

---

---

---

686

670

680

24

---

---

---

---

---

---

---

---

---

688

673

679

25

---

---

---

---

---

---

---

---

---

690

673

680

26

---

---

---

---

---

---

---

---

---

686

672

681

27

---

---

---

---

---

---

---

---

---

703

679

686

28

---

---

---

---

---

---

---

---

---

692

676

684

29

---

---

---

---

---

---

---

---

---

690

671

681

30

---

---

---

---

---

---

---

---

---

696

672

680

31

680

672

676

---

---

---

---

---

---

692

673

681

MONTH

---

---

---

---

---

---

---

---

---

---

---

---

FEBRUARY
MARCH
APRIL
MAY
1

685

673

680

684

665

677

661

644

655

659

649

654

2

696

675

684

683

673

678

662

642

647

658

652

655

3

688

670

679

710

668

677

648

644

646

657

653

655

4

689

670

677

679

669

675

647

644

645

660

652

656

5

685

672

678

677

666

674

646

643

645

660

653

657

6

683

672

678

683

667

675

646

643

645

659

654

656

7

682

670

675

683

665

673

648

644

646

660

654

657

8

678

667

674

680

667

674

660

644

648

748

439

691

9

678

668

674

681

666

675

649

645

647

729

662

700

10

701

672

678

678

666

674

651

646

649

681

667

675

11

674

665

671

681

664

674

654

647

650

687

674

679

12

679

665

671

687

667

676

653

647

650

687

675

681

13

675

666

671

690

665

676

652

648

650

686

654

666

14

680

669

675

682

666

674

654

648

651

660

656

658

15

679

666

673

681

668

675

654

646

650

661

657

659

16

678

670

674

679

670

674

652

642

647

662

656

659

17

696

670

677

684

669

676

653

647

650

660

656

658

18

677

667

672

682

645

660

654

646

651

660

656

659

19

677

668

673

652

640

645

652

642

648

661

656

659

20

676

665

672

646

638

642

652

646

649

662

659

661

21

676

666

672

646

639

642

652

646

649

663

658

660

22

681

666

673

652

641

646

652

647

649

663

659

661

23

683

668

676

661

646

653

656

646

650

665

660

662

24

680

664

672

667

653

661

651

645

648

665

661

663

25

676

665

672

663

647

656

657

645

649

666

661

664

26

676

665

672

664

648

655

655

650

653

667

665

666

27

680

665

674

659

644

648

655

648

652

668

662

666

28

681

668

677

652

644

649

---

---

---

672

661

666

29

---

---

---

651

646

649

657

651

655

665

661

664

30

---

---

---

662

646

656

657

648

652

670

658

665

31

---

---

---

662

654

658

---

---

---

667

599

655

MONTH

701

664

675

710

638

664

---

---

---

748

439

664

JUNE
JULY
AUGUST
SEPTEMBER
1

636

563

601

328

322

325

360

356

358

396

389

392

2

633

407

513

333

320

325

362

358

359

417

394

403

3

488

412

448

332

319

326

364

359

362

436

402

418

4

468

381

430

331

322

326

369

357

361

431

410

420

5

471

417

444

330

323

327

361

357

359

421

413

418

6

447

391

424

331

326

328

361

357

360

419

408

414

7

444

343

413

331

325

328

363

359

361

419

412

415

8

441

398

425

331

327

329

381

362

370

419

398

408

9

456

396

413

330

325

327

370

364

368

404

399

402

10

467

386

416

330

327

329

370

365

368

408

403

405

11

425

381

400

336

328

331

369

364

367

404

400

402

12

404

364

387

335

330

333

369

364

367

406

401

404

13

405

372

388

335

331

333

369

365

367

410

406

408

14

390

380

385

334

331

333

370

363

367

411

409

410

15

386

366

376

335

331

333

371

364

367

414

410

411

16

377

362

370

336

332

334

371

366

369

416

410

414

17

377

358

368

338

333

336

373

367

370

419

414

417

18

372

354

360

340

336

338

374

368

371

427

415

422

19

359

330

350

342

337

340

376

370

373

427

419

423

20

350

330

342

345

339

342

377

370

374

422

414

419

21

347

329

334

346

340

343

377

372

375

421

416

419

22

333

315

326

348

342

345

380

375

377

427

419

422

23

336

322

328

349

344

347

381

376

378

427

423

425

24

337

321

327

353

345

349

381

376

379

433

423

428

25

345

316

327

356

349

352

380

376

378

433

426

430

26

331

321

325

358

351

355

381

376

379

452

430

446

27

329

322

326

359

353

356

382

378

380

455

444

450

28

333

318

326

360

354

357

383

378

381

461

447

453

29

332

316

324

360

349

354

386

380

382

461

444

453

30

330

323

326

356

352

354

386

379

383

462

446

453

31

---

---

---

359

354

356

392

385

388

---

---

---

MONTH

636

315

384

360

319

338

392

356

371

462

389

420

Temperature, water, degrees Celsius 
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAY
MAX
MIN
MEAN
MAX
MIN
MEAN
MAX
MIN
MEAN
MAX
MIN
MEAN
OCTOBER
NOVEMBER
DECEMBER
JANUARY
1

17.9

13.4

16.0

11.1

10.9

11.0

9.0

2.8

6.0

6.5

3.5

4.8

2

17.3

16.3

16.8

11.3

10.6

10.9

9.3

4.0

6.5

6.6

2.6

4.7

3

18.1

16.7

17.2

11.0

9.8

10.3

6.3

2.9

4.6

8.2

3.0

5.5

4

17.9

16.7

17.1

10.4

9.6

9.8

5.6

3.0

4.6

6.9

4.5

5.9

5

17.7

16.4

16.8

10.8

9.5

9.9

6.6

4.8

5.5

6.1

3.7

5.1

6

17.5

16.3

16.7

10.7

9.6

10

7.4

2.7

5.1

9.3

5.5

7.0

7

17.4

16.2

16.6

10.6

9.5

9.8

7.8

3.2

5.4

8.7

3.8

6.4

8

17.3

16.1

16.4

10.4

9.6

9.8

7.7

4.1

5.6

9.1

4.5

6.5

9

18.2

15.8

16.6

10.5

9.4

9.8

7.0

2.3

4.6

7.3

3.5

5.5

10

18.2

15.4

16.3

10.0

9.0

9.3

7.2

2.5

4.8

6.1

2.4

4.3

11

18.6

14.9

16.3

9.9

8.8

9.2

7.8

2.9

5.4

4.1

3.0

3.5

12

17.9

13.4

15.5

9.6

8.6

9.0

7.7

3.4

5.7

7.9

3.2

5.2

13

18.3

10.5

14.1

9.6

8.9

9.1

8.2

3.2

5.5

8.8

3.0

5.8

14

17.4

10.7

13.9

9.3

8.6

9.0

8.3

3.1

5.7

7.2

3.8

5.5

15

17.0

9.6

13.1

10.2

6.5

8.2

6.6

4.4

5.6

7.8

2.8

5.3

16

17.1

---

---

10.3

3.3

6.4

7.6

2.3

5.4

6.0

2.4

3.7

17

17.1

9.6

13.3

11.0

5.7

7.9

8.2

4.1

5.8

4.9

2.1

3.0

18

17.7

10.2

13.5

11.2

5.9

8.1

6.4

3.7

4.9

4.6

1.7

2.7

19

16.7

10.5

13.2

11.0

4.5

7.2

7.1

3.6

5.0

5.2

1.8

3.1

20

17.4

10.1

13.2

11.0

5.1

7.7

6.6

2.1

4.2

5.6

2.4

3.5

21

---

10.7

12.6

11.9

4.8

8.1

6.3

2.9

4.2

4.8

2.3

3.1

22

14.7

10.3

12.2

11.3

5.1

8.2

5.9

2.1

4.1

2.6

1.9

2.2

23

12.0

8.1

10.6

11.7

4.9

8.2

4.2

2.5

3.4

4.7

1.9

2.6

24

11.6

11.6

11.6

6.8

4.3

5.5

4.4

1.8

2.8

4.5

2.0

2.9

25

---

---

---

6.0

3.4

4.4

4.3

0.9

2.4

5.0

2.1

3.1

26

---

---

---

5.5

1.9

3.6

4.2

0.8

2.3

5.4

1.8

3.2

27

---

---

---

6.1

1.6

3.8

4.4

1.1

2.6

5.6

2.6

3.7

28

---

---

---

7.6

2.7

5.0

5.2

1.9

3.5

5.8

2.5

3.5

29

---

---

---

10.0

4.5

6.8

7.4

3.5

4.9

5.6

2.5

3.5

30

---

---

---

8.7

4.1

6.1

7.6

3.2

5.0

4.4

2.3

3.2

31

11.5

11.0

11.3

---

---

---

6.2

2.3

4.3

5.4

2.8

3.7

MONTH

---

---

---

11.9

1.6

8.1

9.3

0.8

4.7

9.3

1.7

4.2

FEBRUARY
MARCH
APRIL
MAY
1

5.6

2.9

3.8

6.0

2.6

3.5

8.6

6.2

7.0

11.1

10.1

10.4

2

5.0

2.8

3.6

6.0

2.6

3.6

8.6

7.0

7.6

11.4

10.1

10.5

3

5.6

2.5

3.5

5.9

2.2

3.7

8.4

7.3

7.7

12.3

10.2

10.9

4

5.4

2.2

3.3

3.4

2.2

2.9

7.8

7.1

7.4

11.9

10.5

11.2

5

5.2

2.3

3.3

5.8

2.2

3.3

7.7

7.0

7.2

12.0

10.8

11.3

6

3.8

1.8

2.5

6.2

2.4

3.8

7.7

7.0

7.2

11.9

10.8

11.2

7

4.6

1.3

2.3

6.8

2.7

4.1

7.7

7.0

7.2

12.1

10.9

11.5

8

4.6

1.0

2.1

7.0

3.1

4.5

8.6

7.0

7.6

14.8

11.0

12.6

9

3.3

1.1

1.9

7.2

3.1

4.6

8.7

6.9

7.6

15.4

10.5

12.0

10

4.5

1.1

2.2

7.3

3.4

4.8

9.1

7.1

7.9

13.3

11.1

12.0

11

4.3

1.4

2.4

7.6

3.5

5.2

8.9

7.1

7.7

13.6

11.1

12.1

12

5.3

1.8

3.1

8.1

4.2

5.5

8.1

7.2

7.5

14.1

11.3

12.4

13

4.3

2.6

3.2

8.4

4.2

5.8

8.2

7.2

7.6

13.1

11.4

12.3

14

4.9

2.7

3.4

8.4

4.4

5.9

8.1

7.2

7.5

13.1

12.1

12.5

15

3.5

2.5

2.9

8.7

4.7

6.1

9.2

7.3

7.8

13.0

12.0

12.5

16

3.7

2.4

2.8

7.2

4.5

5.6

11.1

8.5

9.5

13.2

12.5

12.7

17

5.5

2.4

3.5

5.6

4.8

5.1

9.5

8.5

8.8

13.2

12.5

12.7

18

3.7

2.7

3.1

5.6

4.7

5.1

10.5

8.3

9.3

13.3

12.5

12.8

19

4.9

2.3

3.1

5.4

5.0

5.3

9.5

8.9

9.2

13.0

12.4

12.7

20

4.5

2.0

2.9

6.4

5.2

5.7

10.1

9.1

9.4

13.7

12.8

13.1

21

5.6

2.1

3.2

5.8

5.3

5.6

10.1

9.1

9.4

13.3

12.8

13.0

22

5.6

2.2

3.3

6.3

5.3

5.6

10.2

9.1

9.6

14.0

12.9

13.4

23

4.9

1.8

2.9

6.3

5.2

5.6

10.1

9.0

9.6

14.0

12.9

13.5

24

4.5

1.5

2.3

6.2

5.3

5.6

10.7

9.6

10.0

14.4

12.7

13.7

25

4.7

1.7

2.7

6.6

5.3

5.7

10.8

9.8

10.1

14.2

13.0

13.7

26

4.0

2.2

2.9

6.4

5.1

5.6

11.0

9.7

10.2

14.4

13.5

14.0

27

5.6

2.3

3.4

7.7

5.6

6.5

---

9.8

---

14.4

13.9

14.2

28

4.5

2.2

3.1

7.3

6.0

6.5

---

---

---

14.8

14.0

14.4

29

---

---

---

7.2

5.8

6.2

11.3

9.9

10.7

15.2

13.8

14.6

30

---

---

---

8.0

5.7

6.4

11.1

9.9

10.3

15.4

14.2

14.9

31

---

---

---

8.2

5.8

6.7

---

---

---

15.8

14.5

15.2

MONTH

5.6

1.0

3.0

8.7

2.2

5.2

---

---

---

15.8

10.1

12.7

JUNE
JULY
AUGUST
SEPTEMBER
1

18.1

15.4

16.2

18.8

17.9

18.3

22.1

20.8

21.4

22.7

21.8

22.1

2

16.5

15.5

16.1

19.0

17.8

18.4

22.1

21.3

21.7

22.7

21.5

22.0

3

16.6

15.9

16.2

19.3

17.7

18.4

22.3

21.4

21.8

22.2

21.2

21.5

4

16.9

15.6

16.4

19.3

17.9

18.5

22.3

21.5

22.0

22.5

20.9

21.5

5

17.2

16.0

16.7

18.9

18.0

18.6

22.5

21.7

22.0

22.6

21.0

21.5

6

16.7

15.2

16.2

19.1

18.2

18.5

22.6

21.7

22.1

22.3

21.2

21.5

7

16.5

15.2

16.1

19.2

18.2

18.7

22.5

21.8

22.1

21.9

21.2

21.4

8

16.3

15.5

16.0

19.4

18.4

18.8

22.9

21.3

22.0

22.3

21.1

21.5

9

16.3

15.5

15.9

19.4

18.3

18.9

22.8

21.3

21.9

21.7

21.1

21.3

10

16.3

15.5

15.9

19.5

18.7

19.1

22.8

21.3

21.9

21.8

20.9

21.3

11

16.9

15.3

16.2

19.8

18.5

19.0

22.8

21.6

22.0

21.6

20.7

21.0

12

17.1

15.5

16.6

19.7

18.7

19.1

22.7

21.5

22.0

21.3

20.4

20.8

13

17.0

16.4

16.7

19.7

18.8

19.2

23.0

21.6

22.1

20.4

19.7

20.0

14

17.1

16.5

16.8

19.8

19.0

19.4

23.1

21.5

22.1

20.3

19.5

19.8

15

17.2

16.7

16.9

20.0

19.2

19.6

22.9

21.6

22.1

19.9

19.0

19.5

16

18.1

16.6

17.1

20.1

19.2

19.7

23.1

21.6

22.2

19.7

18.9

19.2

17

17.9

16.7

17.2

20.2

19.4

19.8

23.4

21.8

22.3

19.3

18.0

18.9

18

17.5

16.9

17.2

20.1

19.5

19.8

22.8

21.8

22.2

19.4

18.0

18.7

19

17.7

16.7

17.2

20.8

19.4

20.0

23.1

21.7

22.3

19.5

17.9

18.5

20

17.6

16.8

17.3

20.3

19.7

20.0

23.0

22.0

22.4

19.0

17.8

18.3

21

17.5

16.9

17.2

20.8

19.5

20.0

23.0

21.9

22.3

18.9

17.6

18.1

22

17.8

17.0

17.4

20.5

19.7

20.1

23.1

21.8

22.3

18.7

17.2

17.9

23

17.8

16.9

17.5

20.9

19.9

20.3

23.1

21.9

22.4

18.9

17.4

17.9

24

17.9

16.9

17.4

21.0

19.6

20.3

23.3

22.1

22.6

19.0

17.3

17.9

25

18.2

16.6

17.5

21.1

19.9

20.4

23.2

22.2

22.5

19.6

16.9

17.9

26

18.3

17.2

17.7

21.1

19.9

20.5

23.2

22.3

22.5

20.0

16.7

17.9

27

18.6

17.4

17.9

21.0

20.0

20.5

23.2

22.1

22.5

19.9

16.6

17.8

28

18.5

17.3

17.9

21.1

20.3

20.6

22.8

22.3

22.5

19.6

16.1

17.4

29

18.5

17.3

18.0

22.1

20.4

20.9

23.1

22.1

22.5

19.7

16.2

17.5

30

18.9

17.8

18.2

21.7

20.6

21.2

22.9

22.2

22.4

19.2

16.4

17.3

31

---

---

---

22.0

20.8

21.2

22.5

22.0

22.2

---

---

---

MONTH

18.9

15.2

16.9

22.1

17.7

19.6

23.4

20.8

22.2

22.7

16.1

19.6


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U.S. Geological Survey
Water Resources of Colorado
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