WSP08004

• File Number: 8407
• Description: Platte River Basin - River Basin General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 7/9/1997
• Author: USGS
• Title: Surface-Water Quantity and Quality Data - Rocky Flats Environmental Technology Site Near Denver - Colorado - Water Year 1996
• Water Supply Pro - Doc Type: Report/Study

WALNUT CREEK BELOW POND A-4

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Tlblll0.-0aily mean discharge, GS11 (Walnut Creek below Pond A.4), water year 1996

SITE NUMBER.--GS11

STATION IDENTIFICATION.--395403105104700

LOCATION.--Lat 39054'03", long 105010'47", in SW1/4SW1/4 sec.1, T.2 S., R.70 W., Jefferson County,
Hydrologic unit 10190003, Rocky Flats Environmental Technology Site, just below Pond A-4 dam.

DRAINAGE AREA.--O mi2 (isolated by detention ponds).

PERIOD OF RECORD.-.March 1994 to current year.
GAGE...Water-stage recorder and Parshall flume. Elevation of gage is 5,715 ft above sea level.
REMARKS...Records fair except for estimated daily discharges, which are poor.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
DAILY MEAN VALUES
OAY OCT NOV DEe JAN FEB MAE AFR MAY JUN JUL AUG SEP
1 .00 .00 .00 .46 .00 ,00 .00 1.0 2.1 .00 .00 .00
2 .00 .00 .00 .00 ,00 .00 .00 1.5 1.8 ,00 .00 .00
3 .00 .00 .00 ,00 .00 ,00 .00 1.1 1.9 .00 .00 .00
4 .00 .00 .00 .00 ,00 .00 .59 .82 1.4 ,00 .00 .00
5 .00 .00 .00 .00 .00 .01 1.3 .52 .98 .00 .00 .00
6 .00 .00 .00 .00 .00 ,00 1.7 .00 .39 .00 .00 .00
7 .00 .00 .00 .00 .00 .00 1.1 .00 .33 .00 .00 .00
8 .00 .00 .00 ,00 2.3 .01 .67 .00 .34 .00 .00 .00
9 .00 .00 .00 .00 2,6 .00 .01 .00 .26 ,00 .00 .00
10 .00 .00 .00 .00 2.5 .00 .01 .00 .17 .00 .00 .00
11 ,00 .00 ,00 .00 2.3 ,01 .01 .00 .14 .00 .00 .00
12 .00 .00 .00 .00 1.8 .00 .00 .00 .16 .00 .00 .00
13 ,00 1.2 ,00 .00 1.7 .00 .01 .00 .15 .00 .00 .00
14 .00 3,2 .00 .00 1.6 ,00 .00 .00 .16 .00 .00 .00
15 ,00 2.6 ,00 .00 1.3 .00 .00 .00 .11 .00 .00 .00
16 .00 1.8 .00 .00 1.3 .03 .00 .00 .02 .00 .00 .00
17 .00 1.8 .00 .00 1.1 .03 .00 .00 .02 .00 .00 .00
18 .00 1.7 .00 .00 ,90 .00 .00 .00 .16 .00 .00 .01
19 .00 1.. .00 .00 ,26 .00 .00 .00 .1' .00 .00 e.OO
20 ,00 1.5 .00 .00 .39 ,00 .00 .00 .15 .00 ,00 e.OO
21 ,00 1.3 1.3 .00 .28 .00 .00 .00 .02 .00 .00 e.OO
22 .00 1.2 1.6 .00 .4' .05 .00 .00 .01 .00 .00 e.OO
23 .00 e.40 1.5 .00 .37 .00 .00 .00 .02 .00 .00 e.OO
24 ,00 .00 1.4 .00 .26 .00 .00 .00 .01 .00 .00 e.OO
25 .00 .00 1.5 ,00 .33 .00 .00 .00 .01 .00 .00 e.OO
26 .00 .00 1.4 .00 .37 .00 .00 .00 .01 .00 .00 e.OO
27 .00 .00 1.3 .00 .26 .00 .00 ,00 .00 .00 .00 e.OO
28 .00 .00 .93 ,00 .02 .00 .00 .00 .00 .00 .00 e.OO
29 .00 .00 1.2 .00 .00 .03 .00 .74 .00 .00 .00 e.OO
30 .00 .00 1.6 .00 .00 .00 1.7 .00 .00 .00 e.OO
31 .00 1.2 ,00 .00 2.2 .00 .00
TOTAL 0.00 18.30 14.93 0.46 22.43 0.17 5.40 9.58 10.98 0.00 0.00 0.01
MEAN .000 .61 .48 .015 .77 .005 .18 .31 .37 .000 .000 .000
MAX .00 3.2 1.' .46 2.' .05 1.7 2.2 2,1 .00 .00 .01
NIN .00 .00 .00 ,00 .00 .00 .00 ,00 .00 .00 .00 .00
AC-FT .00 36 30 .. 44 .3 11 ,. 22 .00 .00 .02
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1994 1996, BY WATER YEAR (WY)
MEAN .25 .30 .57 .007 .58 .1' ,61 1.05 .80 .15 .24 .48
MAX .50 .61 .65 .015 .77 .37 ," 2.44 1.43 .45 .71 .96
(WY) 1995 1996 1995 1996 1996 1995 1995 1995 1995 1994 1995 1995
MIN .000 .000 .48 .000 .38 .005 ,18 .31 .37 .000 .000 .000
(WY) 1996 1995 1996 1995 1995 1996 1996 1996 1996 1995 1996 1996
SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1994 1996
ANNUAL TOTAL 253.14 82.26
ANNUAL MEAN ,69 .22 .46
HIGHEST ANNUAL MEAN .70 1995
LOWEST ANNUAL MEAN .22 1996
HIGHEST DAILY MEAN a3.9 May 18 3.2 Nov ,. a3.9 May 18 1995
LOWEST DAILY MEAN b.OO Jan 1 b.OO Oct 1 b.OO Mar 16 1994
ANNUAL SEVEN - DAY MINIMUM ,00 Jan 1 .00 Oct 1 .00 Mar 16 1994
ANNUAL RUNOFF (AC.FT) 502 163 335
10 PERCENT EXCEEDS 2,7 1.2 1..
50 PERCENT EXCEEDS ,00 ,00 .00
90 PERCENT EXCEEDS ,00 ,00 .00
a Also occurred May 19-20, 22-25
b No flow many days
e Ea tima ted
Surflce-Weler Olte 17