DWR_2668867

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2008
• Document Type - Publications and Reports: Streamflow Report

33
PLATTE RIVER BASIN

06720000 CLEAR CREEK AT DERBY, CO

LOCATION.--Lat 39°49'39", long 104°57'21", in SW¼SW¼ sec. 36, T.2 S., R.68 W., Adams County, Hydrologic Unit
10190004, on right bank 975 ft downstream from York Street bridge, 0.5 mi upstream from mouth, and 2.5
mi west of Derby.

DRAINAGE AREA AND PERIOD OF RECORD.--575 mi²; April-Nov. 1914, 1927 to present.

GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in a 60-inch corrugated
metal shelter and well at a rock and concrete control built to armor a sewer line crossing. The primary
reference gage is electric tape gaeg in the shelter. Station at this datum since June 26, 1992.

REMARKS.--The primary record is hourly averages of 15-minute satellite data with chart backup. Daily satellite
maximum and minimum stages were within ± 0.02 ft the chart record. The record is complete and reliable,
except for January 19-27, 2008, due to ice affecting float movement in the well. The record is good,
except for period of ice affected record, which is estimated and poor. Station maintained by Steve
Barrett and Patrick Tyler and record developed by Patrick Tyler.

RATING TABLE.--CLEDERCO34 USED FROM 01-Oct-2007 TO 01-Oct-2008

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2007 TO SEPTEMBER 2008
MEAN VALUES

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP

1 8.2 19 20 20 23 17 13 64 276 549 20 17
2 6.9 24 21 24 18 47 4.3 30 351 500 18 10
3 10 23 22 22 15 26 36 5.6 451 459 13 8.8
4 6.2 22 18 37 14 24 21 3.4 511 397 13 8.8
5 4.9 23 16 62 13 27 4.0 3.4 584 376 18 7.2
6 4.6 21 18 32 14 27 3.4 3.4 321 392 106 7.0
7 5.1 23 20 21 14 23 4.2 83 177 412 109 6.5
8 4.9 21 23 20 14 23 4.0 36 244 371 26 7.6
9 6.1 24 24 19 16 27 3.1 13 98 286 12 12
10 4.6 19 27 17 14 23 71 82 75 229 18 7.4
11 4.6 18 53 18 12 25 13 10 304 209 37 31
12 4.4 17 44 17 12 23 4.5 4.7 343 179 11 322
13 15 13 23 16 15 24 3.9 188 287 171 5.9 56
14 125 13 20 15 23 23 3.3 41 279 153 6.6 58
15 81 16 19 15 18 20 3.8 76 336 124 158 29
16 22 17 20 16 17 21 5.6 26 393 152 635 15
17 15 13 19 19 16 44 23 9.1 412 153 310 9.3
18 11 14 17 19 17 22 9.1 10 461 121 74 8.7
19 5.5 20 16 20 21 19 8.3 13 523 89 27 8.0
20 19 16 15 20 15 26 5.4 78 559 60 10 7.5
21 90 34 15 16 14 55 8.8 130 565 48 23 7.7
22 27 57 14 17 16 17 6.4 173 593 30 17 11
23 18 22 13 13 14 19 10 99 567 48 7.3 7.4
24 15 19 12 11 13 16 15 44 570 196 21 23
25 9.8 17 12 9.3 18 17 17 32 716 128 22 11
26 7.5 17 12 12 20 18 6.3 49 741 105 20 11
27 12 19 15 12 17 13 4.0 104 670 92 15 7.4
28 9.4 22 19 12 16 14 3.6 48 567 73 9.8 10
29 9.2 20 20 12 15 15 3.7 103 570 145 7.8 14
30 13 20 20 11 --- 17 4.2 158 579 74 7.4 9.9
31 15 --- 19 16 --- 18 --- 200 --- 36 7.8 ---

TOTAL 589.9 623 626 590.3 464 730 322.9 1919.6 13123 6357 1785.6 749.2
MEAN 19.0 20.8 20.2 19.0 16.0 23.5 10.8 61.9 437 205 57.6 25.0
AC-FT 1170 1240 1240 1170 920 1450 640 3810 26030 12610 3540 1490
MAX 125 57 53 62 23 55 71 200 741 549 635 322
MIN 4.4 13 12 9.3 12 13 3.1 3.4 75 30 5.9 6.5

CAL YR 2007 TOTAL 58686.2 MEAN 160.8 MAX 1100 MIN 4.4 AC-FT 116400
WTR YR 2008 TOTAL 27880.5 MEAN 76.2 MAX 741 MIN 3.1 AC-FT 55300

MAX DISCH: 1570 CFS AT 13:15 ON Aug. 16, 2008 GH 3.44 FT. SHIFT -0.06 FT.
MAX GH: 3.44 FT. AT 13:15 ON Aug. 16, 2008

FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD.