Board Meeting 12/09/1998

• Board Meeting Date: 12/9/1998
• Description: ISF Section - Additional Information Regarding the Water Availability Analysis for the Tennessee Creek Instream Flow Recommendation
• Board Meetings - Doc Type: Memo

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ARKANSAS RIVER BASIN

213

07083000 HALFMOON CREEK NEAR MALTA, CO

LOCATlON.--Lat 390I0'20",long 106"23'19", in SE'I,SE'I..ec.I3, T.lO S., R.81 W., LakeCoonty, Hydrologic Unit 11020001, on
right bank 1.4 mi upstream from culvert on Halfmoon Campground road, 3.3 mi upstream from mouth, and 4.3 mi southwest of
Malta.

DRAINAGE AREA.--23.6 mi'.

PERIOD OF RECORD.--July 1946 to current year. Surface-water Hydrologic Benchmark station only, April 1996 to current year.
Water-quality data available, November 1966 to March 1996 (HydrologiG Benchmark station). Daily record for water
temperatures available May 1967 to September 1982.

REVISED RECORDS.--WSP 2121: Drainage area at site 1.4 mi downstream. WRD Colo. 1968: 1967 (M). WDR CO-79-1:
1976 (M). WDRCO-80-1: 1954 (M).

GAGE.--Water-stage recorder with satellite telemetry. Concrete control since 1966. Elevation of gage is 9,830 ft above sea level,
from topographic map. Prior to Oct. 19, 1966, at sites 1.4 mi downstream at different datums.

REMARKS.--Records good except for estimated daily discharges, which arc poor. No regulation or diversion upstream from
station. Several measurements of specific conductance and water temperature were obtained and aTC published in the
"Supplemental Water-Quality Data For Gaging Stations" section of this report.

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALVES

DAY OCT NOV DEe JAN FEa O<AR APR HAY JUN JUL AUO SEP
1 19 e18 e6.S d.O e4.5 e4.8 e6.0 ell e86 177 68 33
, 18 e19 e6.S e4.0 e4.6 e4.8 e6.0 ell e140 159 65 33
3 22 e20 e6.0 e4.0 e4.6 e4.8 e6.0 ea e198 154 63 31
4 20 e20 eG.O e4.0 e4.7 e4.8 e6.2 ell 229 147 6' 30
5 19 e20 e6.0 e4.0 e4.8 e4.8 e6_2 ell 23S 141 6' 29
6 18 e19 e5.5 e3.8 e4.8 e4.8 e6.4 e2. 218 131 71 30
7 17 e19 e5.S e3.6 e4.8 e4.9 e6.6 e28 229 129 72 30
8 16 e19 e5.2 e3.8 e4.8 e4.9 e6.6 e30 221 122 61 27
9 16 e19 e5.0 e4.0 e4.8 e4.9 e6.6 e31 165 107 57 26
10 16 e19 e4.8 e4.0 e4.8 e5.0 e6.4 44 160 106 63 26
11 16 e19 e4_8 04.0 e4.8 e5.0 86.4 5. 167 105 59 30
12 15 e19 eS.O e4.0 e4.8 e5.0 e6.0 49 178 101 53 33
13 15 e19 e5.0 e4.0 e4.8 e5.0 e6.0 53 170 ,.5 55 28
14 15 e19 e4.8 e4.0 e4.8 e5.2 e6.0 62 172 105 57 27
15 14 e19 e4.5 e4.0 e4.8 e5.2 e6.0 71 168 106 51 26
16 14 e19 e4.7 e4.2 e4.8 e5.2 e6.2 82 167 ,.3 47 28
17 14 e19 e4.7 e4.2 e4.8 e5.4 e6.4 95 173 98 45 26
18 16 e19 e4.6 e4.2 e4.8 e5.4 e6.6 10' 213 95 45 25
19 15 e19 e4.6 e4.3 e4.8 e5.4 e7.0 '.4 255 95 41 25
20 14 e19 e4_6 e4.3 e4.8 e5.4 e7.4 108 281 91 39 25
21 13 e16 e4.5 e4.2 e4.8 e5.6 e8.0 104 264 87 37 26
22 14 e15 e4.4 e4.2 e4.8 e5.6 e8.8 10' 258 82 34 26
23 e15 e14 e4.4 e4.2 e4.8 e5.6 e9.4 85 250 S7 33 25
24 e15 e13 e4.1 04.2 e4.8 e5.8 e8.8 87 239 89 32 23
25 e14 ell e4.1 e4.2 d.8 e5.8 e8.4 S2 226 86 33 22
26 e15 e1. e4.1 e4.3 e4.8 e6.0 e8.4 e74 210 79 37 21
27 e16 e9.0 e4.2 e4.4 e4.8 e6.0 e9.0 e64 2.0 77 36 21
28 e16 e8.5 e4.4 e4.5 e4.8 e6.0 e10 e56 185 77 34 21
29 e16 e8.0 e4.2 e4.5 e6.0 e10 e47 188 79 32 20
30 e17 e7.0 e4.0 e4.5 e6.0 ell e44 187 77 31 19
31 e17 e4.0 e4.5 e6.0 e52 73 3J
TOTAL 497. 493.5 150.7 128.1 133.6 165.1 218.8 1787 6035 3270 1510 792
MEAN 16.0 16.5 4.86 4.13 4.77 5.33 7.29 57.6 201 105 48.7 26.4
MAX 22 2. 6.5 4.5 4.8 6.0 11 108 281 177 72 33
MTN 13 7.0 4.. 3.6 4.5 '.8 6.0 11 86 73 31 19
AC.FT 986 979 299 254 265 327 434 3540 11970 6490 3000 1570
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 1997, BY WATER YEAR (WY)
MEAN 11.1 7.52 5.13 4.05 3.72 3.78 6.85 44.9 130 85.4 35.9 18.0
MAX 24.5 16.6 9.65 9.03 1.90 10.8 13.8 79.1 2.8 247 128 44.3
tNY! 1962 1962 1996 1996 1986 1947 1989 1996 1980 1995 1995 1961
MIN 6.23 4.40 3.19 1.65 1. 70 1.20 2.70 17.7 61.2 22.9 14.3 8.03
(NY) 1956 1992 1993 1977 1948 1948 1973 1995 1977 1971 1950 1974
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1946 1997
ANNUAL TOTAL 13770.2 15180.8
ANNUAL MEAN 37.6 41.6 29.8
HIGHEST ANNUAL MEAN 55.3 1995
LOWEST ANNUAL MEAN 14.3 1977
HIGHEST DAILY MEAN 280 Jun 22 281 Jun 2. 410 Jul 12 1995
LOWEST DAILY MEAN &4.0 Feb 6 3.6 Jan 7 b1.1 Apr 1 1948
AHNUAL SEVEN.DAY MINIMUM 4.1 Dee 25 3.9 Jan 2 c 1.2 Mar 27 1948
INSTANTANEOUS PEAK FLOW 339 Jun 2. 6.15 Jun 30 1984
INSTANTANEOUS PEAK STAGE 3.44 Jun 20 3.77 Jun 30 1984
.ANNUAL RUNOFF (AC'FT) 27310 30110 21610
10 PERCEh'r EXCEEDS 133 125 89
SO PERCENT EXCEEDS 16 16 9..
90 PERCENT EXCEEDS 5.0 ,., 3.1
90 PERCENT EXCEEDS 2.3 6.0 3.1
e.EaHll'Illted.
a-A1ao occurred Feb 7-10, ond Dec 30-31.
b'A1ao occurred Apr 2, 1948.
c'Praa ratino- curve extended. above 260 ftl/a.
d-Maximum qao-e heio-ht for period of record, 3.82 ft, Ju1 11, 1995.