DWR_2668849

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2005
• Document Type - Publications and Reports: Streamflow Report

25
PLATTE RIVER BASIN

06710500 BEAR CREEK AT MORRISON, CO

LOCATION.--Lat 39°39'11", long 105°11'42, in SE¼SW¼ sec. 35, T.4 S., R.70 W., Jefferson County, Hydrologic Unit
10190002, on left bank at Morrison, 180 ft upstream from bridge on State Highway 8 and 0.2 mi upstream
from Mount Vernon Creek.

DRAINAGE AREA AND PERIOD OF RECORD.--164 mi². Sporadic, incomplete data Sep. 1881 to Feb. 1902. Good data
October 1919 to current year. Monthly data for some periods only. Some early years published as near
Morrison, at Starbuck, at Idledale. Water quality data from Oct. 1976 to Sep. 1981.

GAGE.--Stevens A-35 graphic stage recorder and satellite monitoring DCP with telephone access in a 60-inch metal
shelter and 48 inch well. A new compound weir was installed on the creek just prior to beginning of the
2003 water year. An drop tape from a reference point within the well references all instruments.

REMARKS.--Hourly data is the primary record, taken from satellite monitoring with chart back-up. Mean daily
chart averages were used on June 14-19, and July 22-24 when the DCP was down. Accuracy was maintained by
40 visits to the gage. The record is complete and reliable except for the following periods: January 5-
6, when the DCP was not working and chart float was frozen; November 30; December 1-9, 24-27; January 5,
6, 13-17; February 10, 11, 17, 18; when the gage height was ice affected. The record is good except as
follows: November 30; December 1-9, 24-27; January 5, 6, 13-17; February 10, 11, 17, 18; which were
estimated and are considered poor; and December 17-23, 31; January 1- 4, 7-12; February 1-9, 16, 19,
20; which are fair due to possible ice affect. Station maintained and record developed by Steve Barrett.

RATING TABLE.--BCRMORCO23 USED FROM 01-OCT-2004 TO 30-SEP-2005

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005
MEAN VALUES

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

1 45 40 17 24 17 20 19 142 102 63 30 24
2 40 26 16 22 17 20 28 127 101 60 27 23
3 36 38 17 23 21 19 27 124 113 60 30 23
4 33 41 18 23 22 19 29 122 112 59 80 22
5 36 37 19 16 21 22 32 126 97 55 72 23
6 77 35 23 14 19 23 31 141 92 53 50 23
7 69 33 28 16 19 21 34 160 89 53 40 35
8 55 35 28 17 19 22 40 161 84 50 34 28
9 52 35 32 19 14 20 40 159 85 48 33 26
10 48 41 35 19 11 23 47 157 140 46 47 26
11 47 38 31 23 15 20 39 198 131 43 51 22
12 45 37 29 23 22 23 52 189 134 43 51 21
13 59 34 26 17 21 25 62 168 108 39 49 21
14 53 34 25 16 22 19 85 162 96 38 63 26
15 51 29 25 15 22 18 110 148 94 37 53 28
16 50 31 25 17 20 19 104 143 92 38 45 24
17 47 37 23 18 13 24 111 145 88 37 48 22
18 47 34 26 22 14 20 119 140 82 35 40 21
19 44 29 25 22 23 18 129 139 84 33 35 20
20 44 33 25 24 22 22 126 149 89 28 38 19
21 44 27 20 23 20 22 114 158 97 29 38 18
22 41 26 19 22 22 19 104 162 89 28 36 20
23 39 33 15 21 20 22 100 158 88 25 43 21
24 43 30 16 21 19 22 104 148 96 28 41 21
25 42 32 23 21 19 21 147 140 92 40 36 20
26 43 30 27 21 20 21 138 140 86 62 35 19
27 40 20 28 21 22 19 151 130 79 48 30 18
28 39 23 26 22 18 31 170 120 75 37 33 21
29 39 18 26 22 --- 31 155 112 71 31 30 25
30 32 16 26 22 --- 24 143 133 67 26 27 23
31 33 --- 25 22 --- 24 --- 127 --- 26 25 ---

TOTAL 1413 952 744 628 534 673 2590 4528 2853 1298 1290 683
MEAN 46 32 24 20 19 22 86 146 95 42 42 23
AC-FT 2800 1890 1480 1250 1060 1330 5140 8980 5660 2570 2560 1350
MAX 77 41 35 24 23 31 170 198 140 63 80 35
MIN 32 16 15 14 11 18 19 112 67 25 25 18

WTR YR 2005 TOTAL 18186 MEAN 49.8 MAX 198 MIN 11 AC-FT 36070

MAX DISCH: 288 CFS AT 17:45 ON May. 11, 2005 GH 7.18 FT. SHIFT 0.02 FT.
MAX GH: 7.18 FT. AT 17:45 ON May. 11, 2005

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