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USGS
Water Resources of Colorado


GUNNISON RIVER BASIN

09128000 GUNNISON RIVER BELOW GUNNISON TUNNEL, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--December 1994 to September 1998, November 2002 to September 2003. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09128000

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: November 2002 to September 2003.

WATER TEMPERATURE: October 1996 to September 1998, November 2002 to September 2003.

TURBIDITY: November 2002 to September 2003.

INSTRUMENTATION.--Water temperature sensor and logger, October 1996 to September 1998. Water quality monitor with satellite telemetry, November 2002 to September 2003.

REMARKS.--Daily specific conductance records are excellent, except Apr. 10-16, May 3-12, July 9-25, and Sept. 28-30, which are good. Daily water temperature record is good. Daily turbidity records are good, except Dec. 3-10, Feb. 19 to Mar. 3, May 13-21, and June 19 to Aug. 6, which are fair, and Dec. 27 to Jan. 8, Mar. 31 to Apr. 9, which are poor. Daily maximum turbidity values are not published because of unusually high and erratic readings which are probably not representative of the turbidity of the stream.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: Maximum, 276 microsiemens/cm, Mar. 26, 2003; minimum, 155 microsiemens/cm, May 27, 2003.

WATER TEMPERATURE: Maximum, 13.7°C Sept. 14, 2003; minimum, 1.0°C, Feb. 7, 8, 10, 2003.

TURBIDITY: Maximum, not determined; minimum, 0.1 NTU, Jan. 30, 31, Mar. 11, 2003.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum, 276 microsiemens/cm, Mar. 26; minimum, 155 microsiemens/cm, May 27.

WATER TEMPERATURE: Maximum, 13.7°C, Sept. 14; minimum, 1.0°C, Feb. 7, 8, 10.

TURBIDITY: Maximum, not determined; minimum, 0.1 NTU, Jan. 30, 31, Mar. 11.

MISCELLANEOUS FIELD MEASUREMENTS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
Date

Time

Instan-
taneous
dis-
charge,
cfs
(00061)
Specif.
conduc-
tance,
wat unf
uS/cm
25 degC
(00095)
Temper-
ature,
water,
deg C
(00010)
Date

Time

Instan-
taneous
dis-
charge,
cfs
(00061)
Specif.
conduc-
tance,
wat unf
uS/cm
25 degC
(00095)
Temper-
ature,
water,
deg C
(00010)
APR
JUN
09...
1252
267
230
4.8
02...
1440
1,410
171
11.3

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

---

---

---

---

---

---

246

244

245

235

233

234

2

---

---

---

---

---

---

246

245

246

235

232

233

3

---

---

---

---

---

---

246

245

246

234

232

233

4

---

---

---

---

---

---

246

245

246

234

232

233

5

---

---

---

251

248

249

246

245

246

234

232

233

6

---

---

---

239

237

238

246

245

246

233

231

232

7

---

---

---

238

236

237

247

245

246

236

231

232

8

---

---

---

239

237

238

247

245

246

232

230

231

9

---

---

---

239

235

238

247

245

246

231

229

230

10

---

---

---

239

238

239

256

243

247

230

228

229

11

---

---

---

243

238

239

246

244

245

230

228

229

12

---

---

---

239

238

239

246

244

245

230

229

230

13

---

---

---

239

238

239

246

242

244

230

229

230

14

---

---

---

240

238

239

243

238

240

230

228

229

15

---

---

---

245

240

242

238

237

238

230

227

229

16

---

---

---

246

244

245

238

237

238

229

227

229

17

---

---

---

246

244

245

238

237

237

229

228

229

18

---

---

---

246

245

246

238

237

238

230

228

229

19

---

---

---

247

245

246

239

237

238

230

229

230

20

---

---

---

248

246

247

239

236

237

231

230

230

21

---

---

---

250

248

249

237

235

236

231

229

230

22

---

---

---

249

247

248

237

236

236

231

229

230

23

---

---

---

249

247

248

237

235

236

231

228

229

24

---

---

---

248

247

248

236

234

236

230

227

229

25

---

---

---

256

246

248

237

235

236

229

226

228

26

---

---

---

248

246

247

237

236

237

229

227

228

27

---

---

---

248

247

247

238

236

237

229

226

227

28

---

---

---

251

246

248

237

235

236

228

226

227

29

---

---

---

252

244

247

236

234

235

228

226

227

30

---

---

---

246

245

246

235

234

235

229

225

227

31

---

---

---

---

---

---

235

234

235

228

226

227

MONTH

---

---

---

---

---

---

256

234

240

236

225

230

FEBRUARY
MARCH
APRIL
MAY
1

228

225

227

238

234

236

248

241

244

---

---

---

2

228

226

227

238

234

236

245

238

242

---

---

---

3

228

225

227

237

232

235

248

239

243

220

215

217

4

228

225

227

236

234

235

250

239

242

220

217

218

5

228

226

227

235

232

234

244

237

240

218

216

217

6

228

225

227

235

231

233

259

241

243

220

216

218

7

228

225

227

234

230

233

241

237

239

221

217

219

8

227

225

226

233

229

231

240

233

236

220

217

218

9

227

225

226

232

228

230

235

229

233

218

214

216

10

228

224

226

231

227

229

233

230

231

218

212

215

11

227

224

226

233

227

230

233

229

231

215

207

211

12

227

224

226

237

233

235

232

229

230

221

205

212

13

227

224

226

241

235

237

233

228

230

219

215

217

14

227

224

226

244

238

240

235

228

232

220

217

218

15

227

224

226

246

240

243

242

232

236

220

218

219

16

227

224

226

255

246

249

242

238

241

221

218

220

17

229

225

227

266

248

255

---

---

---

220

217

219

18

230

227

229

269

259

264

---

---

---

219

215

217

19

231

227

229

271

264

266

---

---

---

217

213

215

20

231

228

230

269

265

267

---

---

---

213

210

211

21

232

228

230

269

264

267

---

---

---

211

204

208

22

235

231

232

270

267

269

---

---

---

205

198

202

23

236

232

234

273

268

270

---

---

---

198

188

193

24

236

233

235

269

267

268

---

---

---

189

175

183

25

237

234

235

274

268

270

---

---

---

175

165

170

26

237

234

236

276

269

271

---

---

---

166

157

161

27

237

234

236

274

265

269

---

---

---

200

155

176

28

237

234

236

269

264

266

---

---

---

202

187

194

29

---

---

---

265

257

261

---

---

---

194

179

185

30

---

---

---

257

252

254

---

---

---

205

186

197

31

---

---

---

252

246

249

---

---

---

206

197

201

MONTH

237

224

229

276

227

249

---

---

---

---

---

---

JUNE
JULY
AUGUST
SEPTEMBER
1

197

175

184

202

201

202

203

201

202

213

210

212

2

181

165

173

204

201

203

203

202

202

214

213

213

3

181

172

176

205

204

204

203

202

202

214

209

211

4

175

171

173

205

204

204

204

202

203

210

209

209

5

172

169

171

206

203

204

205

203

204

210

209

210

6

170

168

169

206

204

205

204

203

203

211

209

210

7

171

168

169

206

204

205

203

202

202

212

210

211

8

175

169

172

212

203

206

203

202

202

213

211

212

9

175

173

174

204

202

203

204

202

203

214

212

213

10

---

---

---

203

202

202

205

203

204

214

212

213

11

---

---

---

205

202

203

204

203

204

218

212

215

12

183

181

182

206

204

205

204

202

203

222

218

219

13

185

183

183

207

204

206

205

203

204

225

221

224

14

185

184

185

207

205

206

206

205

205

226

220

224

15

185

184

185

208

206

207

206

206

206

230

222

226

16

184

183

183

209

207

208

206

205

205

230

224

228

17

183

182

183

209

207

208

206

205

205

230

226

228

18

184

181

182

211

209

210

211

210

206

228

219

223

19

182

181

181

213

210

211

206

205

206

223

219

220

20

183

181

182

213

212

212

207

205

206

223

219

221

21

186

183

184

214

212

213

207

205

206

222

218

220

22

187

184

185

214

213

213

206

205

206

223

217

219

23

193

186

189

215

213

215

206

205

206

219

216

218

24

196

193

195

217

215

216

207

205

206

219

216

218

25

198

196

197

217

202

209

208

207

208

219

216

218

26

199

197

198

202

201

202

209

207

208

219

216

218

27

200

198

199

202

201

202

209

208

208

218

215

217

28

202

200

201

202

201

202

209

207

208

221

215

217

29

201

200

201

203

201

202

209

207

208

220

213

217

30

203

201

202

202

201

202

208

207

208

229

215

222

31

---

---

---

202

201

202

210

208

209

---

---

---

MONTH

---

---

---

217

201

206

211

201

205

230

209

218

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

---

---

---

---

---

---

5.6

5.1

5.3

2.8

2.0

2.4

2

---

---

---

---

---

---

5.3

4.8

5.0

2.3

1.9

2.1

3

---

---

---

---

---

---

5.4

4.8

5.1

2.6

2.0

2.2

4

---

---

---

---

---

---

5.0

4.5

4.7

2.5

2.1

2.3

5

---

---

---

9.5

8.5

8.8

5.1

4.6

4.8

2.8

2.2

2.5

6

---

---

---

9.3

8.4

8.7

4.8

4.4

4.6

2.7

2.2

2.4

7

---

---

---

9.1

8.2

8.6

4.6

4.2

4.4

2.5

2.0

2.2

8

---

---

---

8.8

8.4

8.6

4.7

4.1

4.3

2.2

1.9

2.0

9

---

---

---

8.6

8.2

8.5

4.4

4.0

4.2

2.5

1.8

2.1

10

---

---

---

8.6

8.0

8.2

4.5

3.9

4.1

2.6

2.1

2.3

11

---

---

---

8.3

7.7

8.1

4.1

3.7

3.9

2.6

2.1

2.3

12

---

---

---

7.9

7.4

7.6

4.4

3.8

4.1

2.4

1.9

2.2

13

---

---

---

7.9

7.2

7.5

4.0

3.3

3.8

2.3

1.8

2.0

14

---

---

---

8.2

7.5

7.8

3.3

2.6

3.0

2.4

1.8

2.0

15

---

---

---

7.8

7.0

7.4

3.3

2.6

2.9

2.4

1.9

2.0

16

---

---

---

7.4

6.8

7.1

3.1

2.6

2.8

2.1

1.6

1.8

17

---

---

---

7.4

6.7

7.0

3.0

2.6

2.9

2.3

1.6

1.9

18

---

---

---

7.2

6.6

6.9

3.1

2.6

2.9

2.1

1.4

1.7

19

---

---

---

7.0

6.4

6.6

3.3

2.8

3.0

1.9

1.3

1.6

20

---

---

---

6.9

6.3

6.5

2.8

2.4

2.7

1.9

1.3

1.5

21

---

---

---

6.8

6.3

6.5

2.9

2.3

2.5

2.0

1.3

1.6

22

---

---

---

6.6

6.1

6.3

2.6

2.0

2.3

2.1

1.4

1.7

23

---

---

---

6.5

6.0

6.2

2.3

1.9

2.1

2.2

1.4

1.7

24

---

---

---

6.6

5.9

6.2

2.5

1.9

2.1

2.3

1.4

1.8

25

---

---

---

6.3

5.9

6.1

2.8

2.2

2.4

2.3

1.6

1.9

26

---

---

---

6.1

5.5

5.8

2.7

2.2

2.4

2.0

1.3

1.6

27

---

---

---

5.7

5.2

5.4

2.7

2.0

2.3

2.0

1.3

1.7

28

---

---

---

5.6

5.1

5.3

2.2

1.5

1.9

2.2

1.4

1.8

29

---

---

---

5.5

5.1

5.2

1.9

1.4

1.6

2.1

1.3

1.6

30

---

---

---

5.5

4.9

5.2

2.3

1.7

1.9

2.2

1.3

1.7

31

---

---

---

---

---

---

2.5

1.9

2.1

2.3

1.4

1.8

MONTH

---

---

---

---

---

---

5.6

1.4

3.3

2.8

1.3

1.9

FEBRUARY
MARCH
APRIL
MAY
1

2.2

1.5

1.8

3.1

1.7

2.2

4.6

3.1

3.6

6.2

4.8

5.3

2

2.1

1.4

1.8

3.2

1.6

2.2

4.3

3.2

3.6

6.2

5.0

5.5

3

2.0

1.1

1.5

3.3

1.5

2.2

4.0

3.2

3.4

6.5

5.2

5.6

4

2.3

1.2

1.6

2.0

1.8

1.9

4.4

3.2

3.6

6.1

5.1

5.4

5

2.0

1.4

1.7

3.2

1.6

2.2

4.4

3.4

3.7

6.1

5.3

5.6

6

1.9

1.1

1.4

3.3

1.9

2.5

4.4

3.4

3.7

6.7

5.2

5.7

7

1.9

1.0

1.4

3.9

1.9

2.6

4.6

3.4

3.8

6.3

5.2

5.6

8

2.0

1.0

1.4

3.9

1.9

2.6

5.1

3.3

3.9

5.9

5.3

5.6

9

1.9

1.2

1.4

4.1

1.9

2.7

5.5

3.5

4.1

6.8

5.4

5.8

10

2.4

1.0

1.6

4.0

2.1

2.8

5.4

3.7

4.3

6.4

5.4

5.8

11

2.2

1.2

1.6

4.3

2.2

3.0

5.6

3.9

4.4

7.4

5.5

6.2

12

2.5

1.3

1.8

4.7

2.7

3.4

5.3

4.0

4.4

7.8

5.8

6.4

13

2.3

1.8

2.0

5.1

2.8

3.7

5.6

4.0

4.5

7.3

5.8

6.3

14

2.5

1.9

2.1

4.1

3.0

3.5

5.5

3.9

4.4

7.7

6.0

6.5

15

2.7

1.8

2.1

4.7

3.0

3.7

4.5

3.9

4.1

6.9

6.2

6.6

16

2.3

1.6

1.9

4.0

3.2

3.5

5.6

3.8

4.4

7.8

6.4

6.8

17

3.0

1.9

2.3

3.9

3.1

3.5

5.1

3.9

4.3

8.0

6.5

7.0

18

3.0

2.0

2.4

3.8

3.0

3.3

5.1

4.2

4.4

7.3

6.8

6.9

19

3.6

2.1

2.5

3.7

2.8

3.2

5.6

4.2

4.6

8.8

6.8

7.5

20

3.2

2.0

2.5

4.1

2.6

3.2

5.8

4.3

4.8

8.7

7.0

7.5

21

3.3

2.1

2.5

3.9

2.8

3.2

6.0

4.5

5.1

8.8

7.1

7.6

22

2.8

2.0

2.3

4.8

2.5

3.3

5.9

4.8

5.2

9.0

7.3

7.9

23

2.9

1.7

2.1

4.9

2.5

3.4

5.2

4.6

4.9

9.2

7.5

8.2

24

3.0

1.8

2.3

3.8

2.7

3.0

5.6

4.6

4.9

9.1

7.7

8.2

25

2.5

2.0

2.2

4.4

2.7

3.2

6.3

4.6

5.1

9.2

7.9

8.3

26

2.7

1.9

2.2

3.5

2.6

3.0

6.4

4.7

5.2

9.7

7.9

8.5

27

2.8

2.0

2.3

3.7

2.6

3.0

6.2

4.6

5.1

10.0

8.1

8.8

28

2.8

1.8

2.2

3.7

2.7

3.0

6.0

4.7

5.2

10.0

8.2

8.9

29

---

---

---

4.0

2.7

3.1

6.0

4.8

5.1

9.8

8.5

8.9

30

---

---

---

4.6

2.8

3.4

6.0

4.8

5.2

9.6

8.4

8.8

31

---

---

---

4.8

3.0

3.4

---

---

---

9.5

8.5

8.9

MONTH

3.6

1.0

2.0

5.1

1.5

3.0

6.4

3.1

4.4

10.0

4.8

7.0

JUNE
JULY
AUGUST
SEPTEMBER
1

9.9

9.0

9.3

11.2

10.2

10.5

11.8

11.1

11.3

13.1

12.2

12.5

2

10.2

9.2

9.6

11.1

10.1

10.5

11.9

11.1

11.3

13.3

12.3

12.6

3

10.2

9.4

9.7

11.2

10.2

10.5

11.9

11.1

11.3

13.2

12.4

12.6

4

10.5

9.4

9.8

11.2

10.2

10.5

12.0

11.1

11.5

13.2

12.4

12.6

5

10.5

9.4

9.9

11.2

10.2

10.5

12.3

11.3

11.6

13.2

12.4

12.6

6

---

9.3

---

11.1

10.2

10.5

12.1

11.3

11.6

13.2

12.5

12.6

7

---

9.5

---

11.1

10.2

10.5

11.9

11.1

11.3

13.2

12.4

12.6

8

---

9.4

---

11.2

10.2

10.5

12.0

11.1

11.4

13.3

12.4

12.7

9

---

9.7

---

11.2

10.3

10.6

12.2

11.2

11.5

12.6

12.4

12.5

10

---

---

---

11.3

10.3

10.7

12.1

11.3

11.6

12.9

12.5

12.6

11

---

---

---

11.3

10.3

10.7

12.3

11.4

11.7

13.0

12.2

12.5

12

---

---

---

11.2

10.3

10.7

12.2

11.4

11.7

13.5

12.2

12.6

13

10.9

9.7

10.1

11.2

10.3

10.6

12.3

11.4

11.7

13.3

12.3

12.6

14

11.4

9.7

10.3

11.2

10.4

10.7

12.4

11.5

11.8

13.7

12.3

12.7

15

11.4

9.7

10.3

11.1

10.5

10.7

12.1

11.6

11.8

13.6

12.3

12.7

16

10.7

9.9

10.2

11.3

10.5

10.7

12.3

11.6

11.8

13.4

12.4

12.7

17

11.4

10.0

10.3

11.2

10.4

10.7

12.3

11.6

11.8

13.0

12.1

12.5

18

11.3

10.0

10.4

11.2

10.4

10.7

12.1

11.6

11.8

13.5

12.1

12.6

19

11.3

10.0

10.4

11.3

10.4

10.7

12.6

11.6

11.9

13.6

12.3

12.7

20

11.2

10.1

10.4

11.4

10.5

10.8

12.6

11.6

11.9

13.4

12.3

12.6

21

11.3

10.0

10.5

11.4

10.6

10.9

12.6

11.7

12.0

13.4

12.2

12.5

22

11.5

10.1

10.5

11.5

10.6

10.9

12.5

11.8

12.0

13.5

12.2

12.6

23

11.3

10.1

10.5

11.4

10.7

10.9

12.7

11.9

12.1

13.6

12.2

12.5

24

11.4

10.1

10.5

11.6

10.7

10.9

12.7

11.9

12.2

13.5

12.1

12.5

25

11.7

10.2

10.7

11.5

10.7

10.9

12.9

12.1

12.3

13.4

12.1

12.5

26

11.6

10.2

10.6

11.5

10.7

10.9

13.0

12.1

12.4

13.3

12.1

12.5

27

11.3

10.2

10.6

11.7

10.8

11.1

12.9

12.2

12.4

13.4

12.1

12.5

28

11.3

10.2

10.6

11.7

10.8

11.1

12.7

12.3

12.4

13.4

12.2

12.5

29

11.3

10.2

10.6

11.9

10.9

11.2

13.0

12.2

12.4

13.4

12.2

12.5

30

11.3

10.2

10.6

11.8

10.9

11.2

13.0

12.2

12.4

13.4

12.2

12.5

31

---

---

---

11.8

10.9

11.2

13.0

12.2

12.4

---

---

---

MONTH

---

---

---

11.9

10.1

10.8

13.0

11.1

11.8

13.7

12.1

12.6

Turbidity, water, unfiltered, nephelometric turbidity units 
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAY
MIN
MEDIAN
MIN
MEDIAN
MIN
MEDIAN
MIN
MEDIAN
MIN
MEDIAN
MIN
MEDIAN
OCTOBER
NOVEMBER
DECEMBER
JANUARY
FEBRUARY
MARCH
1

---

---

---

---

1.2

1.5

0.9

1.9

0.2

0.4

2.1

10

2

---

---

---

---

1.1

1.5

0.9

2.9

0.3

0.6

0.7

3.6

3

---

---

---

---

1.2

1.7

0.7

2.3

0.3

0.5

0.3

0.9

4

---

---

---

---

1.3

1.8

0.7

2.1

0.3

0.5

0.7

0.9

5

---

---

1.1

1.7

1.2

2.0

0.7

2.4

0.3

0.5

0.6

0.8

6

---

---

1.0

1.6

1.3

2.9

0.6

2.8

0.3

0.5

0.5

0.8

7

---

---

0.9

1.4

1.1

1.6

0.7

2.3

0.4

0.5

0.4

0.7

8

---

---

0.9

1.4

1.3

2.0

0.6

1.2

0.4

0.6

0.3

0.6

9

---

---

1.2

1.7

1.4

2.0

0.5

0.7

0.5

0.8

0.3

0.5

10

---

---

1.0

1.4

0.7

1.7

0.5

0.7

0.6

0.8

0.2

0.4

11

---

---

0.8

1.5

0.8

1.0

0.5

0.7

0.6

0.8

0.1

0.4

12

---

---

0.9

1.4

0.7

1.2

0.5

0.6

0.6

0.8

0.3

0.5

13

---

---

1.1

1.7

0.9

1.2

0.5

0.6

0.5

0.7

0.2

0.6

14

---

---

1.2

1.7

0.8

1.3

0.5

0.7

0.5

0.7

0.7

1.0

15

---

---

1.3

2.0

1.1

1.6

0.5

0.6

0.6

0.9

2.0

2.8

16

---

---

2.1

2.9

1.2

1.7

0.5

0.6

0.9

1.1

4.1

6.9

17

---

---

2.3

2.8

1.3

1.8

0.5

0.6

1.0

1.2

5.6

9.9

18

---

---

2.0

2.7

1.4

1.9

0.5

0.6

0.9

1.5

11

14

19

---

---

1.9

2.5

1.8

2.1

0.4

0.6

1.3

1.7

12

14

20

---

---

1.6

2.4

1.5

2.4

0.4

0.6

1.3

1.6

9.1

14

21

---

---

1.9

2.4

2.0

2.5

0.4

0.6

1.7

2.9

8.9

14

22

---

---

1.5

2.2

1.5

3.2

0.5

0.6

1.7

3.9

13

15

23

---

---

1.6

2.1

1.4

2.3

0.4

0.7

2.0

6.3

12

16

24

---

---

1.4

1.9

1.2

2.3

0.3

0.6

2.1

11

12

14

25

---

---

1.5

2.0

1.9

2.6

0.2

0.5

10

17

12

14

26

---

---

1.3

1.7

1.3

1.9

0.3

0.4

12

50

8.8

12

27

---

---

1.1

1.6

1.3

2.0

0.2

0.4

35

120

7.0

9.7

28

---

---

1.1

1.6

0.8

2.2

0.3

0.4

8.8

83

6.1

7.4

29

---

---

1.2

1.6

0.8

1.9

0.2

0.4

---

---

4.7

5.8

30

---

---

1.0

1.6

0.6

1.8

0.1

0.3

---

---

4.3

5.2

31

---

---

---

---

0.8

1.9

0.1

0.3

---

---

4.0

13

MAX

---

---

---

---

2.0

3.2

0.9

2.9

35

120

13

16

MIN

---

---

---

---

0.6

1.0

0.1

0.3

0.2

0.4

0.1

0.4

APRIL
MAY
JUNE
JULY
AUGUST
SEPTEMBER
1

4.6

9.0

---

---

21

55

1.5

1.9

1.0

1.8

4.3

6.8

2

5.5

13

---

---

30

66

1.0

1.5

1.1

1.7

5.5

6.6

3

3.3

17

5.3

6.6

22

27

0.8

1.2

1.3

1.7

3.7

4.8

4

3.3

23

5.1

6.3

15

20

0.8

1.3

1.4

1.8

2.9

3.5

5

4.2

12

4.2

5.2

13

15

0.9

1.5

1.2

1.6

2.3

2.8

6

8.0

85

3.7

4.6

13

15

0.8

1.5

1.4

2.0

2.0

2.6

7

3.5

78

3.1

3.9

12

14

0.8

1.3

2.0

2.3

2.1

2.6

8

2.1

3.1

3.2

3.8

9.5

12

0.6

1.1

1.9

2.3

2.0

2.4

9

2.0

3.0

---

---

---

---

0.5

1.9

1.8

2.2

1.6

2.3

10

2.4

2.9

---

---

---

---

0.4

0.7

1.7

2.2

1.8

2.3

11

2.4

3.1

---

---

---

---

0.4

0.9

1.8

2.3

2.0

2.6

12

2.7

3.1

---

---

---

---

0.7

1.0

1.9

2.2

8.7

11

13

2.6

3.1

1.8

2.2

7.6

8.5

0.8

1.2

1.9

2.2

17

23

14

2.8

3.2

1.3

1.9

6.8

7.5

1.0

1.4

2.0

2.4

14

22

15

3.5

5.8

1.6

2.0

6.5

7.2

0.9

1.4

2.3

2.7

14

21

16

---

---

1.5

2.1

6.1

6.6

1.1

1.6

2.1

2.5

11

14

17

---

---

1.7

3.1

5.5

6.2

1.3

2.8

2.0

2.5

7.4

8.8

18

---

---

2.5

4.1

5.5

6.1

1.8

16

2.0

2.6

3.8

5.1

19

---

---

4.6

15

5.0

5.6

1.5

2.4

1.8

2.3

3.4

4.3

20

---

---

2.2

2.9

4.3

5.1

1.2

2.3

1.9

2.3

2.7

3.7

21

---

---

2.0

3.4

3.9

4.6

2.7

4.6

2.0

2.4

2.2

2.9

22

---

---

2.0

2.9

3.8

4.5

4.2

6.9

1.7

2.3

1.7

2.3

23

---

---

2.8

3.7

3.3

4.0

1.2

2.8

1.9

2.2

1.7

2.1

24

---

---

3.4

4.2

2.8

3.8

1.4

1.7

1.9

2.2

1.2

2.0

25

---

---

2.8

3.4

2.8

3.4

0.8

1.9

2.4

4.5

1.3

1.9

26

---

---

2.7

3.5

2.6

3.0

0.8

1.2

4.3

5.1

1.3

1.8

27

---

---

3.1

4.3

2.3

2.8

0.8

1.1

3.2

4.2

1.4

1.8

28

---

---

4.7

6.2

1.8

2.3

0.7

1.2

2.4

3.1

1.0

1.8

29

---

---

4.0

6.0

1.3

1.7

1.2

1.5

2.3

2.7

1.6

1.9

30

---

---

4.3

5.7

1.4

1.7

1.0

1.4

2.0

2.4

1.3

2.0

31

---

---

3.8

8.7

---

---

1.0

1.5

2.0

2.5

---

---

MAX

---

---

---

---

---

---

4.2

16

4.3

5.1

17

23

MIN

---

---

---

---

---

---

0.4

0.7

1.0

1.6

1.0

1.8


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U.S. Geological Survey
Water Resources of Colorado
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