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USGS
Water Resources of Colorado


GREEN RIVER BASIN

09246400 ELKHEAD CREEK BELOW MAYNARD GULCH, NEAR CRAIG, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--July 1995 to September 2003 (discontinued). For a complete listing of historical data available for this site, see
http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09246400

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: August 1995 to September 1999, March 2001 to September 2003 (discontinued).

WATER TEMPERATURE: August 1995 to September 1999, March 2001 to September 2003 (discontinued).

INSTRUMENTATION.--Water-quality monitor with satellite telemetry, August 1995 to September 1999, March 2001 to September 2003.

REMARKS.--Published daily specific-conductance records are good except for for the period Mar. 28 to Apr. 24, which is fair. Published daily water-temperature records are excellent. Periods of missing or deleted record are due to the sensor being out of water or instrumentation failure.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: Maximum recorded, 588 microsiemens/cm, Apr. 11, 1998; minimum recorded, 113 microsiemens/cm, June 12, 2003.

WATER TEMPERATURE: Maximum recorded, 31.8°C, July 18,2003; minimum, 0.0°C on many days during winter period.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum, 434 microsiemens/cm, Feb. 11; minimum, 113 microsiemens/cm, June 12.

WATER TEMPERATURE: Maximum, 31.8°C, July 18; minimum, 0.0°C, on many days.

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Instan-
taneous
dis-
charge,
cfs
(00061)
Turbid-
ity,
wat unf
lab,
Hach
2100AN
NTU
(99872)
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)
Hard-
ness,
water,
unfltrd
mg/L as
CaCO3
(00900)
Calcium
water,
fltrd,
mg/L
(00915)
Magnes-
ium,
water,
fltrd,
mg/L
(00925)
Potas-
sium,
water,
fltrd,
mg/L
(00935)
Sodium
adsorp-
tion
ratio
(00931)
Sodium,
water,
fltrd,
mg/L
(00930)
OCT
29...
1200
1.4
--
9.6
8.6
371
6.9
140
33.7
12.7
1.49
0.8
22.6
NOV
18...
1310
1.0
3.8
10.8
8.2
367
4.2
150
35.8
13.6
1.48
0.8
23.5
JAN
22...
1240
5.6
--
11.8
8.1
403
0.0
160
38.4
15.1
1.52
1
28.8
FEB
26...
1507
1.7
--
11.2
8.1
429
0.0
160
39.7
14.9
1.40
1
28.3
MAR
20...
1030
1.4
3.7
10.6
8.3
401
5.4
150
37.0
14.5
1.29
1
30.1
APR
08...
1014
40
10
11.9
8.3
379
2.4
140
35.4
13.5
1.65
0.9
24.8
23...
1355
466
54
10.0
8.2
354
6.2
130
31.3
12.2
2.03
0.8
20.8
JUN
17...
1120
45
19
7.8
8.0
161
18.1
66
17.2
5.57
1.04
0.4
6.88
JUL
22...
1250
1.7
--
6.9
8.6
272
28.3
110
27.0
9.30
1.73
0.7
17.3
AUG
12...
1610
1.7
20
6.8
8.8
262
30.4
100
26.2
9.37
1.63
0.7
16.7

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Alka-
linity,
wat flt
fxd end
lab,
mg/L as
CaCO3
(29801)
Chlor-
ide,
water,
fltrd,
mg/L
(00940)
Fluor-
ide,
water,
fltrd,
mg/L
(00950)
Silica,
water,
fltrd,
mg/L
(00955)
Sulfate
water,
fltrd,
mg/L
(00945)
Residue
water,
fltrd,
sum of
consti-
tuents
mg/L
(70301)
Residue
water,
fltrd,
tons/
acre-ft
(70303)
Residue
water,
fltrd,
tons/d
(70302)
Ammonia
+
org-N,
water,
unfltrd
mg/L
as N
(00625)
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)
OCT
29...
118
4.53
<0.2
5.5
63.9
215
0.29
0.81
0.40
<0.04
<0.06
<0.008
<0.02
NOV
18...
120
4.65
0.2
6.2
67.2
225
0.31
0.61
0.28
<0.04
<0.06
<0.008
<0.02
JAN
22...
135
4.14
0.19
6.9
71.5
247
0.34
3.76
0.34
<0.04
<0.06
<0.008
<0.02
FEB
26...
E167
4.98
0.21
6.7
75.3
--
--
--
0.31
<0.04
<0.06
<0.008
<0.02
MAR
20...
125
6.43
0.18
4.6
74.8
244
0.33
0.92
0.29
<0.04
<0.06
<0.008
<0.02
APR
08...
108
3.55
0.15
8.0
81.6
234
0.32
25.3
0.36
<0.04
0.15
<0.008
<0.02
23...
87
2.97
0.14
8.2
77.6
210
0.29
264
0.51
<0.04
0.63
E.006
<0.02
JUN
17...
57
1.49
<0.2
10.9
18.6
97
0.13
11.8
0.43
<0.04
0.19
E.005
<0.02
JUL
22...
94
3.66
<0.2
9.7
40.9
166
0.23
0.76
0.60
E.03
<0.06
E.004
<0.02
AUG
12...
91
2.95
<0.2
10.2
36.9
159
0.22
0.73
0.58
<0.04
<0.06
<0.008
<0.02

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Phos-
phorus,
water,
unfltrd
mg/L
(00665)
Organic
carbon,
water,
fltrd,
mg/L
(00681)
Organic
carbon,
water,
unfltrd
mg/L
(00680)
E coli,
m-TEC
MF,
water,
col/
100 mL
(31633)
Fecal
coli-
form,
M-FC
0.7u MF
col/
100 mL
(31625)
OCT
29...
0.018
--
--
--
--
NOV
18...
0.012
6.3
6.7
E2
E10
JAN
22...
0.004
--
--
--
--
FEB
26...
0.011
--
--
--
--
MAR
20...
0.012
4.7
4.3
E2
E7
APR
08...
0.020
--
--
--
--
23...
0.071
6.0
7.6
--
--
JUN
17...
0.047
--
--
21
29
JUL
22...
0.036
--
--
--
--
AUG
12...
0.039
7.1
8.4
87
103

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

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Alum-
inum,
water,
unfltrd
recover
-able,
ug/L
(01105)
Arsenic
water,
fltrd,
ug/L
(01000)
Arsenic
water
unfltrd
ug/L
(01002)
Barium,
water,
fltrd,
ug/L
(01005)
Barium,
water,
unfltrd
recover
-able,
ug/L
(01007)
Beryll-
ium,
water,
unfltrd
recover
-able,
ug/L
(01012)
Cadmium
water,
fltrd,
ug/L
(01025)
Cadmium
water,
unfltrd
ug/L
(01027)
Chrom-
ium,
water,
fltrd,
ug/L
(01030)
Chrom-
ium,
water,
unfltrd
recover
-able,
ug/L
(01034)
Cobalt
water,
unfltrd
recover
-able,
ug/L
(01037)
Copper,
water,
fltrd,
ug/L
(01040)
Copper,
water,
unfltrd
recover
-able,
ug/L
(01042)
NOV
18...
60
<2
<2
48.6
44.7
<2
E.2
E.2
<0.8
<0.8
<3.4
1.3
1.5
JUN
17...
430
<2
2
34.0
36.7
<2
<0.2
<0.2
<0.8
<1.6
<3.4
1.9
2.7

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Iron,
water,
fltrd,
ug/L
(01046)
Iron,
water,
unfltrd
recover
-able,
ug/L
(01045)
Lead,
water,
fltrd,
ug/L
(01049)
Lead,
water,
unfltrd
recover
-able,
ug/L
(01051)
Lithium
water
unfltrd
recover
-able,
ug/L
(01132)
Mangan-
ese,
water,
fltrd,
ug/L
(01056)
Mangan-
ese,
water,
unfltrd
recover
-able,
ug/L
(01055)
Mercury
water,
fltrd,
ug/L
(71890)
Mercury
water,
unfltrd
recover
-able,
ug/L
(71900)
Molyb-
denum,
water,
unfltrd
recover
-able,
ug/L
(01062)
Nickel,
water,
unfltrd
recover
-able,
ug/L
(01067)
Selen-
ium,
water,
fltrd,
ug/L
(01145)
Selen-
ium,
water,
unfltrd
ug/L
(01147)
NOV
18...
12
180
<1
<1
E7
21.8
29.9
<0.02
<0.02
E1
E1.4
<3
<3
JUN
17...
50
530
<1
<1
9
5.5
21.5
<0.02
<0.02
<2
2.3
<3
<3

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Silver,
water,
fltrd,
ug/L
(01075)
Silver,
water,
unfltrd
recover
-able,
ug/L
(01077)
Zinc,
water,
fltrd,
ug/L
(01090)
Zinc,
water,
unfltrd
recover
-able,
ug/L
(01092)
NOV
18...
<0.3
<0.3
<24
<25
JUN
17...
<0.3
<0.3
E2
<25

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

SUSPENDED SEDIMENT DISCHARGE, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date
Time
Instan-
taneous
dis-
charge,
cfs
(00061)
Temper-
ature,
water,
deg C
(00010)
Suspnd.
sedi-
ment,
sieve
diametr
percent
<.063mm
(70331)
Sus-
pended
sedi-
ment
concen-
tration
mg/L
(80154)
Sus-
pended
sedi-
ment
load,
tons/d
(80155)
MAR
20...
1030
1.4
5.4
--
4
0.01
APR
08...
1014
40
2.4
86
20
2.2
23...
1355
466
6.2
100
47
59
JUN
17...
1120
45
18.1
--
15
1.8
AUG
12...
1610
1.7
30.4
--
18
0.08

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

382

372

376

360

346

351

412

388

402

384

374

379

2

394

367

375

358

347

352

399

372

384

381

372

376

3

370

361

365

359

346

354

382

362

373

377

371

374

4

363

356

359

364

353

359

375

355

366

375

369

371

5

375

356

364

372

358

362

365

349

357

374

370

372

6

367

354

359

374

359

365

366

350

358

376

370

372

7

368

354

360

377

361

367

374

356

365

383

373

376

8

368

356

361

366

352

359

387

362

375

395

380

386

9

375

358

365

355

340

347

401

379

391

400

382

392

10

395

363

371

347

335

340

418

397

406

396

388

391

11

396

371

377

350

338

345

430

400

412

400

389

394

12

382

370

374

363

349

358

420

402

411

403

395

399

13

386

372

377

368

360

364

423

397

413

401

393

396

14

388

375

380

365

357

361

427

400

415

395

387

391

15

393

377

383

362

347

353

424

394

408

393

388

390

16

396

378

384

361

353

357

425

386

405

394

385

390

17

393

375

382

366

358

361

406

380

392

396

389

393

18

386

372

378

369

358

363

395

376

382

402

394

399

19

389

369

374

374

363

366

383

369

374

405

396

401

20

380

367

371

368

361

365

388

372

379

404

395

401

21

379

363

368

368

355

359

382

368

373

403

395

399

22

377

364

368

359

348

354

378

369

373

402

394

398

23

373

360

364

361

345

350

395

376

385

399

390

395

24

369

350

360

365

338

343

388

380

384

394

383

388

25

357

349

353

356

339

345

387

380

383

390

379

384

26

355

346

350

380

354

367

388

381

385

383

375

379

27

356

344

350

395

374

387

391

385

388

387

376

380

28

361

341

349

411

393

401

394

382

389

390

382

385

29

356

339

347

421

405

410

392

383

386

393

383

388

30

358

346

350

416

403

411

388

378

382

395

388

392

31

364

345

351

---

---

---

386

380

383

398

388

394

MONTH

396

339

366

421

335

363

430

349

386

405

369

388

FEBRUARY
MARCH
APRIL
MAY
1

395

386

391

398

388

393

342

308

321

303

292

297

2

395

387

392

396

390

392

370

316

337

293

285

288

3

395

385

390

396

389

392

369

349

361

293

280

284

4

399

389

393

400

392

395

374

364

369

282

272

276

5

404

392

397

400

393

396

380

370

375

272

263

268

6

413

400

406

397

388

393

384

374

380

264

260

261

7

427

408

417

394

386

389

392

382

387

262

249

255

8

427

415

422

393

384

388

398

387

392

260

248

251

9

426

421

424

393

386

390

401

386

395

255

250

252

10

432

426

428

391

378

385

403

387

395

251

245

249

11

434

429

431

383

368

375

412

392

403

248

244

246

12

430

421

425

368

354

361

409

397

403

248

241

243

13

422

413

417

357

349

353

415

405

410

241

238

240

14

414

401

407

364

351

358

413

348

374

239

234

236

15

401

391

394

368

352

361

349

336

339

245

234

237

16

396

389

392

---

---

---

340

331

337

237

230

233

17

397

390

393

---

---

---

339

326

331

244

214

228

18

398

392

394

---

---

---

338

331

334

219

191

204

19

404

394

398

---

---

---

336

331

334

194

178

185

20

409

400

405

---

---

---

331

317

325

183

170

177

21

409

401

405

---

---

---

320

314

316

173

159

166

22

405

400

403

---

---

---

322

314

317

160

150

154

23

407

399

403

---

---

---

320

314

317

150

139

144

24

403

398

400

---

---

---

350

318

333

140

131

134

25

405

400

402

---

---

---

333

308

322

133

129

131

26

405

400

403

---

---

---

347

315

330

130

125

126

27

405

396

400

---

---

---

337

318

328

126

121

123

28

400

394

396

---

---

---

320

296

312

121

117

119

29

---

---

---

322

309

314

312

291

304

120

116

117

30

---

---

---

---

---

---

304

289

299

118

116

117

31

---

---

---

---

---

---

---

---

---

118

115

116

MONTH

434

385

405

---

---

---

415

289

349

303

115

205

JUNE
JULY
AUGUST
SEPTEMBER
1

119

115

117

219

202

210

309

290

296

263

254

258

2

119

115

117

234

219

226

322

304

311

263

256

260

3

118

114

116

236

219

226

322

311

316

265

255

261

4

117

114

116

248

236

241

316

302

308

268

257

262

5

121

117

120

248

237

243

311

297

304

268

260

265

6

124

121

123

250

237

245

310

294

302

271

262

268

7

128

124

126

259

243

250

308

293

299

269

257

263

8

131

124

127

261

256

258

303

288

296

264

258

261

9

136

126

128

279

257

265

301

286

294

266

257

262

10

132

121

126

287

273

280

303

287

294

265

250

256

11

124

117

121

282

273

277

306

290

297

259

252

254

12

123

113

120

290

271

282

303

268

289

267

256

261

13

---

---

---

293

283

288

279

257

265

266

257

260

14

---

---

---

291

279

283

279

257

268

274

257

263

15

---

---

---

298

282

290

274

263

268

283

264

271

16

---

---

---

306

291

295

277

265

271

290

278

282

17

---

---

---

295

271

277

280

265

270

302

279

287

18

171

162

168

291

275

281

273

264

269

291

281

285

19

178

171

175

298

284

287

273

265

267

294

286

288

20

179

174

177

298

279

282

276

264

269

296

288

292

21

174

169

171

292

279

283

279

267

271

297

289

292

22

174

170

172

297

271

282

286

273

278

295

285

290

23

176

172

174

297

279

287

279

268

271

294

286

290

24

177

173

175

306

284

292

278

268

273

295

287

291

25

180

174

178

307

285

293

280

270

274

297

287

290

26

183

176

180

309

290

295

284

273

278

301

291

294

27

185

178

182

304

291

296

---

---

---

298

291

294

28

190

182

187

305

291

296

---

---

---

302

292

295

29

198

188

193

301

277

287

283

278

281

300

295

297

30

207

194

202

291

277

282

284

278

281

309

296

301

31

---

---

---

299

279

286

279

252

258

---

---

---

MONTH

---

---

---

309

202

273

---

---

---

309

250

276

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

17.7

8.0

12.3

4.5

1.5

2.8

2.4

1.0

1.5

0.0

0.0

0.0

2

15.3

9.3

12.1

4.3

1.3

2.4

4.5

0.9

2.1

0.0

0.0

0.0

3

12.6

9.1

10.7

5.2

0.5

2.4

4.3

0.7

2.0

0.0

0.0

0.0

4

12.7

8.1

10

4.8

1.0

2.5

2.7

1.2

1.8

0.0

0.0

0.0

5

13.8

9.0

10.8

6.5

0.9

3.2

3.6

1.2

2.1

0.0

0.0

0.0

6

15.5

8.5

11.6

7.4

0.9

3.5

4.1

1.0

2.1

0.0

0.0

0.0

7

17.5

7.6

12.1

6.2

1.0

3.3

3.6

0.5

1.7

0.0

0.0

0.0

8

17.6

8.0

12.4

5.8

2.3

3.8

3.6

0.3

1.6

0.0

0.0

0.0

9

16.7

7.4

11.7

3.8

2.1

3.3

3.4

0.2

1.5

0.0

0.0

0.0

10

15.9

7.0

11.3

3.7

1.0

2.1

3.0

0.2

1.3

0.0

0.0

0.0

11

10.8

7.6

9.6

4.0

0.8

2.0

2.7

0.3

1.2

0.0

0.0

0.0

12

13.5

3.9

8.2

5.2

0.5

2.4

1.4

0.3

0.7

0.0

0.0

0.0

13

13.0

3.2

7.6

3.6

1.3

2.2

2.4

0.0

0.8

0.0

0.0

0.0

14

13.2

3.3

7.8

5.2

1.3

2.8

2.3

0.0

0.7

0.0

0.0

0.0

15

13.1

3.7

7.9

3.8

0.7

2.0

2.0

0.0

0.7

0.0

0.0

0.0

16

12.4

4.1

7.8

3.8

0.4

1.7

1.6

0.0

0.6

0.0

0.0

0.0

17

13.0

3.7

7.9

3.3

0.5

1.7

0.7

0.0

0.3

0.0

0.0

0.0

18

13.1

3.8

8.0

4.7

0.5

2.1

0.9

0.0

0.2

0.0

0.0

0.0

19

12.7

3.5

7.6

5.3

1.1

2.9

0.7

0.0

0.1

0.0

0.0

0.0

20

12.1

3.3

7.3

6.8

1.5

3.4

0.3

0.0

0.1

0.0

0.0

0.0

21

11.7

3.1

7.1

7.0

1.2

3.4

0.1

0.0

0.0

0.0

0.0

0.0

22

8.5

3.1

6.1

7.0

1.2

3.4

0.1

0.0

0.0

0.0

0.0

0.0

23

8.7

4.9

6.7

6.7

1.4

3.6

0.1

0.0

0.0

0.0

0.0

0.0

24

11.1

5.5

7.3

4.4

1.7

2.8

0.0

0.0

0.0

0.0

0.0

0.0

25

10.1

4.3

6.7

3.4

0.5

1.7

0.0

0.0

0.0

0.0

0.0

0.0

26

9.5

4.0

6.7

3.3

0.2

1.4

0.0

0.0

0.0

0.0

0.0

0.0

27

10.3

5.4

7.5

2.9

0.2

1.2

0.0

0.0

0.0

0.0

0.0

0.0

28

9.2

4.4

6.3

3.3

0.2

1.3

0.0

0.0

0.0

0.0

0.0

0.0

29

7.3

3.6

5.3

3.7

0.2

1.5

0.0

0.0

0.0

0.0

0.0

0.0

30

5.9

2.3

3.7

4.0

0.3

1.6

0.0

0.0

0.0

0.0

0.0

0.0

31

5.1

1.3

3.0

---

---

---

0.0

0.0

0.0

0.0

0.0

0.0

MONTH

17.7

1.3

8.4

7.4

0.2

2.5

4.5

0.0

0.7

0.0

0.0

0.0

FEBRUARY
MARCH
APRIL
MAY
1

0.0

0.0

0.0

0.0

0.0

0.0

9.5

2.7

5.8

8.8

6.9

7.5

2

0.0

0.0

0.0

0.0

0.0

0.0

6.7

3.3

4.5

9.5

7.2

8.0

3

0.0

0.0

0.0

0.0

0.0

0.0

4.7

2.6

3.4

9.2

6.9

7.6

4

0.0

0.0

0.0

0.0

0.0

0.0

6.0

1.8

3.6

8.1

6.8

7.3

5

0.0

0.0

0.0

0.0

0.0

0.0

5.8

2.0

3.5

8.6

6.8

7.4

6

0.0

0.0

0.0

0.0

0.0

0.0

6.7

2.2

3.9

10.0

6.9

7.9

7

0.0

0.0

0.0

0.0

0.0

0.0

6.9

1.9

4.0

8.4

6.8

7.5

8

0.0

0.0

0.0

0.0

0.0

0.0

10.8

0.9

5.3

8.7

7.0

7.6

9

0.0

0.0

0.0

0.0

0.0

0.0

11.7

1.7

6.2

9.0

6.9

7.5

10

0.0

0.0

0.0

0.0

0.0

0.0

9.7

2.2

5.8

8.5

6.9

7.4

11

0.0

0.0

0.0

0.0

0.0

0.0

9.0

4.8

6.8

9.8

6.6

7.8

12

0.0

0.0

0.0

0.1

0.0

0.0

7.4

4.0

5.4

10.9

6.6

8.1

13

0.0

0.0

0.0

0.5

0.0

0.1

7.3

3.8

5.2

10.7

7.1

8.8

14

0.0

0.0

0.0

1.1

0.0

0.3

6.9

4.3

5.3

11.4

8.4

9.9

15

0.0

0.0

0.0

2.4

0.0

0.6

6.0

4.7

5.2

10.6

8.7

9.6

16

0.0

0.0

0.0

1.8

0.0

0.6

8.0

5.0

6.3

11.1

8.5

10

17

0.0

0.0

0.0

1.4

0.0

0.5

8.1

5.3

7.1

11.1

7.6

9.1

18

0.0

0.0

0.0

4.2

0.0

1.6

6.3

5.3

5.8

11.0

8.6

9.7

19

0.0

0.0

0.0

5.9

0.3

2.6

7.9

5.2

6.3

11.3

9.5

10.3

20

0.0

0.0

0.0

4.9

0.6

2.2

9.8

5.3

7.1

11.5

9.4

10.3

21

0.0

0.0

0.0

6.6

0.4

2.8

8.9

5.9

7.2

11.6

9.3

10.4

22

0.0

0.0

0.0

7.1

1.0

3.3

8.4

6.1

6.8

12.2

9.3

10.6

23

0.0

0.0

0.0

9.2

1.0

4.3

6.4

5.3

6.0

13.9

10.2

11.9

24

0.0

0.0

0.0

7.3

1.9

4.1

8.7

5.8

6.8

14.3

12.0

13.1

25

0.0

0.0

0.0

11.9

1.0

5.6

9.0

6.3

7.5

14.2

12.3

13.1

26

0.0

0.0

0.0

7.2

2.1

3.7

8.1

6.0

6.9

14.9

12.5

13.5

27

0.0

0.0

0.0

8.8

1.1

4.0

8.6

5.9

6.9

16.2

12.9

14.7

28

0.0

0.0

0.0

7.3

1.5

4.2

8.3

6.4

7.1

17.1

15.0

16.2

29

---

---

---

6.4

0.9

3.6

8.1

6.6

7.2

17.1

14.4

16.1

30

---

---

---

---

1.0

---

8.4

6.8

7.3

17.6

14.1

15.3

31

---

---

---

---

2.1

---

---

---

---

17.6

14.3

15.5

MONTH

0.0

0.0

0.0

---

0.0

---

11.7

0.9

5.9

17.6

6.6

10.3

JUNE
JULY
AUGUST
SEPTEMBER
1

17.9

14.3

16.3

23.2

19.4

21.3

29.1

18.8

23.4

25.1

15.2

19.8

2

17.4

13.9

15.2

26.3

17.7

21.6

30.1

19.3

23.9

24.6

16.3

19.8

3

18.1

14.4

15.9

26.6

18.5

22.3

25.9

20.1

22.9

24.5

16.2

19.8

4

18.1

14.1

15.8

27.1

18.3

22.4

27.7

19.2

23.1

25.8

15.9

20.4

5

18.7

14.6

16.6

27.2

18.5

22.6

30.1

18.8

23.9

22.1

16.4

19.3

6

18.9

14.7

16.5

25.8

18.3

22.2

27.3

19.4

23.4

23.5

17.5

19.4

7

19.2

14.4

16.4

27.6

18.1

22.5

25.3

19.6

22.3

22.3

17.3

18.9

8

20.2

14.2

16.8

26.7

18.5

22.3

28.5

18.6

23.1

21.9

15.7

18.2

9

18.4

13.9

15.7

27.2

17.2

22.2

29.3

20.0

24.2

21.9

14.5

17.4

10

18.9

12.6

15.6

28.5

17.7

23.0

30.4

19.2

24.4

17.0

13.4

15.1

11

19.2

13.6

15.7

26.2

18.5

22.4

29.3

20.4

23.8

15.5

12.9

13.9

12

---

---

---

29.0

18.1

23.1

30.3

18.6

23.6

20.8

12.2

15.9

13

---

---

---

28.2

18.9

23.3

30.1

19.7

24.1

20.8

12.1

15.7

14

---

---

---

30.0

18.8

24.1

30.2

20.3

24.1

20.3

10.1

14.7

15

---

---

---

26.1

19.5

23.0

26.8

16.9

21.7

20.1

10.2

14.9

16

---

---

---

30.3

19.6

24.3

24.5

19.1

21.3

19.7

12.5

15.8

17

---

---

---

31.5

20.9

25.2

23.9

18.1

20.0

15.2

10.8

13.4

18

23.0

17.8

20.8

31.8

20.9

25.4

23.3

16.9

19.3

18.2

9.1

12.8

19

21.8

17.0

19.5

31.1

20.4

24.8

26.7

16.0

20.9

18.5

8.9

13.1

20

19.4

16.0

17.7

31.0

20.3

24.4

27.5

17.0

21.8

17.6

9.7

13.2

21

20.2

14.9

17.5

31.2

20.6

25.2

27.6

17.8

22.1

18.3

8.6

13.1

22

21.3

15.5

18.2

31.0

20.7

25.3

26.3

19.4

22.2

19.7

9.2

13.9

23

20.8

15.3

18.5

29.2

20.6

24.6

27.7

19.9

23.0

19.2

9.8

14.3

24

19.2

14.9

16.8

30.9

20.1

24.4

28.7

19.3

23.2

20.0

9.8

14.5

25

18.4

14.5

16.6

31.0

20.6

25.1

26.1

18.9

22.0

18.9

9.9

14.3

26

21.3

14.6

18.1

30.9

21.0

25.2

26.6

17.6

21.3

18.9

10.4

14.5

27

21.7

16.1

19.3

29.7

20.6

24.6

---

18.5

---

19.6

10.8

14.8

28

22.6

16.8

20.1

29.2

20.4

24.5

26.9

---

---

19.7

11.0

15.0

29

23.6

18.1

21.2

28.2

21.1

23.8

25.1

17.1

20.7

19.3

11.1

15.1

30

24.5

19.0

21.7

29.3

19.4

23.9

24.9

17.4

20.2

19.2

12.3

15.4

31

---

---

---

26.6

19.3

22.5

23.5

17.2

19.7

---

---

---

MONTH

---

---

---

31.8

17.2

23.6

---

---

---

25.8

8.6

15.9


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U.S. Geological Survey
Water Resources of Colorado
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