LOCATION.--Lat 37°49'11", long 107°39'47", in SW14SW14 sec.8, T.41 N., R.7 W., San Juan County, Hydrologic Unit 14080104, on left bank, at abandoned railroad crossing Cement Creek, 0.1 mile north of Silverton, and 0.8 mile upstream from mouth.
DRAINAGE AREA.--20.1 mi2.
PERIOD OF RECORD.--October 1991 to September 1993, October 1994 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09358550
GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 9,380 ft above NGVD of 1929, from topographic map.
REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural regulation by many lakes upstream from station. Diversions for mining operations upstream from station. However, these diversions are returned to the creek upstream of the gage. Mine drainage contributes considerable amounts of water to the creek. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.
EXTREMES OUTSIDE PERIOD OF RECORD.--A major flood occurred October 5, 1911. A more recent flood occurred June 6, 1978, when Lake Emma (6.5 mi northeast of Silverton) was undermined by mining operations, and released a large quantity of water into the headwaters of Cement Creek. Discharge not determined.
DISCHARGE, CUBIC FEET PER SECOND
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
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53
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49
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194
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48
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168
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109
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15
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32
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166
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46
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17
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15
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17
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16
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14
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15
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47
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167
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45
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16
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15
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16
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16
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14
|
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e9.2
|
e8.3
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15
|
60
|
205
|
44
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17
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15
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16
|
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15
|
e14
|
e7.6
|
e8.9
|
e8.3
|
13
|
65
|
239
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42
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17
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16
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15
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16
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e14
|
e7.6
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e8.7
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---
|
e15
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59
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237
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40
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17
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15
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15
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14
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e13
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e7.7
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e8.7
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---
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e17
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55
|
218
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39
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16
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18
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15
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16
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---
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e7.9
|
e8.7
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---
|
e17
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---
|
203
|
---
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16
|
15
|
---
|
|
547
|
444
|
294.8
|
288.2
|
234.2
|
381.4
|
870
|
3,353
|
2,548
|
666
|
501
|
633
|
|
17.6
|
14.8
|
9.51
|
9.30
|
8.36
|
12.3
|
29.0
|
108
|
84.9
|
21.5
|
16.2
|
21.1
|
|
22
|
16
|
13
|
13
|
9.3
|
17
|
65
|
239
|
196
|
36
|
20
|
38
|
|
14
|
13
|
7.6
|
8.0
|
7.5
|
8.4
|
13
|
26
|
39
|
16
|
14
|
14
|
|
17
|
15
|
8.0
|
8.9
|
8.3
|
13
|
26
|
85
|
70
|
19
|
16
|
18
|
|
1,080
|
881
|
585
|
572
|
465
|
757
|
1,730
|
6,650
|
5,050
|
1,320
|
994
|
1,260
|
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1992 - 2003, BY WATER YEAR (WY)
|
|
18.7
|
16.1
|
13.0
|
12.1
|
12.1
|
15.3
|
29.3
|
101
|
125
|
54.0
|
26.2
|
21.7
|
|
28.9
|
19.8
|
15.6
|
15.8
|
17.8
|
22.7
|
42.1
|
145
|
263
|
149
|
50.7
|
34.6
|
|
(1998)
|
(1999)
|
(1995)
|
(1995)
|
(1995)
|
(1995)
|
(2000)
|
(1996)
|
(1995)
|
(1995)
|
(1999)
|
(1999)
|
|
14.0
|
12.7
|
9.26
|
8.27
|
8.36
|
12.3
|
22.6
|
37.3
|
24.6
|
13.2
|
12.9
|
16.9
|
|
(1992)
|
(2002)
|
(2002)
|
(2002)
|
(2003)
|
(2003)
|
(1998)
|
(2002)
|
(2002)
|
(2002)
|
(2002)
|
(2002)
|
a Also occurred Feb 18, 2003.
|