DWR_2668988

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2003
• Document Type - Publications and Reports: Streamflow Report

PLATTE RIVER BASIN

06727000 BOULDER CREEK NEAR ORODELL, CO

LOCATION.--Lat 40°00'23", long 105°19'49", in NE¼SW¼ sec. 34, T.l N., R.71 W., Boulder County, Hydrologic
Unit 10190005, on left bank along State Highway 119, 0.7 mi southwest of old Orodell, 1.1 mi
upstream from Fourmile Creek, and 2.9 mi southwest of courthouse in Boulder.

DRAINAGE AREA.--102 mi².

GAGE.--Stevens A35 graphic water-stage recorder and Sutron 8210 DCP with shaft encoder in a 6 foot by 6
foot exposed aggregate concrete shelter with a 54-inch corrugated metal well. The primary reference
is a tape down from RP. There is an outside staff gage across the stream that reads approximately 1
foot lower than gage datum. The data collection platform (DCP) provides the primary record. The
station now includes a pressure transducer installed by Urban Drainage and Flood Control District.

REMARKS.--Primary record is taken from hourly satellite data, with graphic chart as backup. Record is
complete and reliable, except for the winter record where the station was off. Measurements were
made approximately every two weeks to create an estimated record. Estimates for these days were
taken from the daily average releases from Barker Reservoir provided from the City of Boulder
caretaker of Barker Reservoir. These days are included in the following list: December 26, 2002 –
April 2, 2003. Record is good, except for the period December 26, 2002 through April 2, 2003 in
which the station was off. Station maintained and record developed by M.L. Cunning.

RATING TABLE.--BOCOROCO13 USED FROM 01-OCT-2002 TO 03-SEP-2003
BOCOROCO13 USED FROM 03-SEP-2003 TO 10-OCT-2003

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
MEAN VALUES

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

1 7.2 13 11 9.7 5 4.8 54 52 988 275 93 74
2 12 11 12 9.3 5.2 4.8 56 50 830 259 77 80
3 12 13 14 9.3 5.5 4.8 62 60 706 256 77 98
4 13 13 13 8.9 5.7 5 55 58 596 232 91 77
5 10 12 12 8.9 5.7 5.2 48 61 500 218 83 65
6 9.4 13 12 8.9 6 5.5 42 63 418 198 73 66
7 12 13 12 9.3 6.3 5.7 39 65 411 186 51 72
8 11 13 12 9.7 6.6 6 38 66 329 168 66 69
9 11 12 12 9.7 6.6 6.3 41 68 328 161 75 79
10 11 11 12 10 6.9 6.6 49 72 392 153 72 73
11 11 13 13 11 7.2 6.9 62 69 440 144 65 64
12 11 12 13 11 7.5 7.2 77 71 476 145 80 68
13 12 13 13 11 7.6 7.5 86 74 455 145 71 47
14 11 13 13 11 7.5 7.7 92 79 449 139 60 52
15 9.7 12 13 11 7.5 7.8 93 94 484 127 47 60
16 8.9 12 13 12 7.2 8.2 86 96 486 128 52 46
17 6.9 13 10 12 6.9 8.5 88 89 437 134 46 49
18 6.8 13 12 11 6.9 8.9 85 85 445 137 62 47
19 6.2 12 12 11 6.6 9.3 82 80 434 141 79 37
20 6.1 11 12 10 6.3 11 69 66 457 151 80 36
21 6 11 11 9.7 6.3 12 61 71 406 154 76 28
22 7.4 14 11 8.9 6 17 61 87 393 132 68 27
23 6.4 11 11 8.5 5.7 22 60 95 396 118 59 28
24 6.4 11 11 7.8 5.7 29 56 102 385 111 50 28
25 7.2 12 11 7.2 5.5 35 50 104 375 119 52 26
26 6.8 12 11 6.9 5.2 40 55 116 297 118 54 32
27 6.4 11 11 6.3 5.2 44 61 123 280 112 52 33
28 6.2 11 10 6 5 48 66 505 260 109 51 21
29 8.2 10 10 5.5 --- 50 61 700 267 107 47 16
30 13 11 10 5.2 --- 51 57 922 280 103 89 18
31 15 --- 9.7 5 --- 52 --- 906 --- 111 74 ---

TOTAL 287.2 362 362.7 281.7 175.3 537.7 1892 5149 13400 4791 2072 1516
MEAN 9.3 12 11.7 9.1 6.3 17.3 63 166 447 155 67 51
AC-FT 570 718 719 559 348 1070 3750 10210 26580 9500 4110 3010
MAX 15 14 14 12 7.6 52 93 922 988 275 93 98
MIN 6 10 9.7 5 5 4.8 38 50 260 103 46 16

WTR YR 2003 TOTAL 30826.6 MEAN 84.5 MAX 988 MIN 4.8 AC-FT 61140

MAX DISCH: 1040 CFS AT 05:00 ON Jun. 1, 2003 GH 3.79 FT. SHIFT 0.14 FT.
MAX GH: 3.79 FT. AT 05:00 ON Jun. 1, 2003

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

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