DWR_2668867

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

39
PLATTE RIVER BASIN

SOUTH ST. VRAIN CREEK NEAR WARD, CO

LOCATION.--Lat 40°05'27", long 105°30'50"

DRAINAGE AREA AND PERIOD OF RECORD.--14.4 mi²; 1925-27,28-31, 54-73, 1992 to present.

GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in 42-inch diameter
corrugated metal pipe shelter and well. The primary reference gage is a reference point (RP) and metal
drop tape located in the shelter. There is no supplementary outside staff gage equipped at this gage.

REMARKS.--The primary record is hourly averages of 15-minute DCP data with chart as backup. Record is complete
and reliable, except for October 15-19, 2007 when the stage-discharge relationship was affected by ice;
October 19, 2007 to May 19, 2008 the gage was off for winter and no gage-height information available.
Record is good, except for periods of no gage height and ice affected record, which are poor; discharge
for October 19, 2007 and May 19, 2008, are based on partial day record, and are estimated and poor.
This is a partial year record. No discharge record was kept for the winter period (October 19, 2007 to
May 19, 2008).Station maintained and record developed by Russell Stroud.

RATING TABLE.--SSVWARCO11 USED FROM 01-Oct-2007 TO 30-Sep-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 9.1 --- --- --- --- --- --- --- 110 130 41 37
2 12 --- --- --- --- --- --- --- 131 123 46 35
3 11 --- --- --- --- --- --- --- 140 117 46 33
4 10 --- --- --- --- --- --- --- 137 125 45 31
5 9.4 --- --- --- --- --- --- --- 130 117 42 32
6 9.2 --- --- --- --- --- --- --- 103 121 43 29
7 8.3 --- --- --- --- --- --- --- 91 118 53 27
8 7.4 --- --- --- --- --- --- --- 93 107 45 25
9 8.4 --- --- --- --- --- --- --- 74 88 46 23
10 7.8 --- --- --- --- --- --- --- 77 89 59 14
11 7.6 --- --- --- --- --- --- --- 92 88 53 9.9
12 7.2 --- --- --- --- --- --- --- 71 84 47 19
13 7.1 --- --- --- --- --- --- --- 58 81 42 17
14 9.5 --- --- --- --- --- --- --- 71 73 40 14
15 8.0 --- --- --- --- --- --- --- 93 65 43 12
16 8.0 --- --- --- --- --- --- --- 108 65 66 10
17 8.0 --- --- --- --- --- --- --- 119 64 67 9.1
18 9.0 --- --- --- --- --- --- --- 126 65 53 9.4
19 9.0 --- --- --- --- --- --- 45 136 60 46 12
20 --- --- --- --- --- --- --- 51 144 59 43 11
21 --- --- --- --- --- --- --- 59 143 55 41 13
22 --- --- --- --- --- --- --- 67 142 54 38 12
23 --- --- --- --- --- --- --- 56 139 58 38 11
24 --- --- --- --- --- --- --- 48 141 72 38 9.2
25 --- --- --- --- --- --- --- 47 139 66 44 8.8
26 --- --- --- --- --- --- --- 51 130 56 46 8.3
27 --- --- --- --- --- --- --- 49 134 49 44 8.2
28 --- --- --- --- --- --- --- 56 140 47 40 8.1
29 --- --- --- --- --- --- --- 79 129 45 39 7.8
30 --- --- --- --- --- --- --- 83 135 43 38 7.5
31 --- --- --- --- --- --- --- 92 --- 41 37 ---

TOTAL 166.0 --- --- --- --- --- --- 783 3476 2425 1409 503.3
MEAN 8.74 --- --- --- --- --- --- 60.2 116 78.2 45.5 16.8
AC-FT 329 --- --- --- --- --- --- 1550 6890 4810 2790 998
MAX 12 --- --- --- --- --- --- 92 144 130 67 37
MIN 7.1 --- --- --- --- --- --- 45 58 41 37 7.5

CAL YR 2007 TOTAL 7951.1 MEAN 51.0 MAX 170 MIN 7.1 AC-FT 15770 (PARTIAL YEAR RECORD)
WTR YR 2008 TOTAL 8762.3 MEAN 56.9 MAX 144 MIN 7.1 AC-FT 17380 (PARTIAL YEAR RECORD)

MAX DISCH: 161 CFS AT 00:15 ON Jun. 20, 2008 GH 2.76 FT. SHIFT 0 FT.
MAX GH: 2.76 FT. AT 00:15 ON Jun. 20, 2008

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