DWR_2668864

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2007
• Document Type - Publications and Reports: Streamflow Report

5
PLATTE RIVER BASIN

06695000 SOUTH PLATTE RIVER ABOVE ELEVENMILE CANYON RESERVOIR NEAR HARTSEL, CO

LOCATION.--Lat 38°58'03", long 105°34'51", in NE¼ sec. 32, T.12 S., R.73 W., Park County, Hydrologic Unit
10190001, on left bank 200 ft downstream from highway bridge, 2.5 mi upstream from water line of
Elevenmile Canyon Reservoir, at elevation 8,561 ft. and 13 mi southeast of Hartsel.

DRAINAGE AREA AND PERIOD OF RECORD.--880 mi²; 1933 to present.

GAGE.--Water-stage recorder with satellite telemetry (DCP and shaft encoder) in a wooden shelter at a 25 ft.
Parshall Flume. Datum of gage is 8,612.83 ft,(Denver Board of Water Commissioners Datum). Station is
owned and maintained by the Denver Water Dept. Satellite instrumentation is owned and maintained by the
State Engineer of Colorado.

REMARKS.--Primary record is hourly data taken from satellite readings, with chart back-up. Record is complete
and reliable, except for November 12, December 17, 18, 2006, February 22, April 7, 9, 28, May 5, 6, 7,
June 28, 29, July 18, 2007, when the DCP transmission was compromised. Good chart data were used to fill
in the missing satellite data without loss of accuracy. Spinney Reservoir is 2 miles upstream. Spinney
release keeps this gage open year round. Ice jams downstream caused backwater into the flume during the
periods: November 30, December 1-5, 2006, January 1, 2, 16-19, 25-31, February 1-5, 15, 17, 18, March 1,
to 4, 2007. The maximum gage height (GH) recorded occurred during the backwater period. This GH was not
used as the yearly Max GH, since it did not occur during good record. The record is rated good, with the
exception of the ice affected periods, which are estimated from adjacent good record and considered fair.
Station operated and record developed by Mike Wild.

RATING TABLE.--STD25FTPF USED FROM 01-OCT-2006 TO 30-SEP-2007

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2006 TO SEPTEMBER 2007
MEAN VALUES

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

1 88 89 135 141 70 60 40 37 76 223 238 179
2 88 89 135 141 70 60 39 37 126 216 229 179
3 89 89 135 141 70 60 39 37 127 211 207 179
4 88 89 135 141 70 60 40 37 140 213 217 179
5 88 89 135 141 70 61 39 37 186 200 264 170
6 89 89 135 141 61 61 40 38 262 191 337 155
7 90 89 135 140 52 61 40 38 308 217 385 151
8 90 89 135 127 51 61 40 37 294 236 385 151
9 90 89 135 92 51 61 48 37 253 220 360 145
10 89 89 135 92 51 61 53 37 236 225 315 141
11 89 89 135 92 51 61 53 37 236 209 256 135
12 89 89 135 92 51 61 53 37 237 189 212 130
13 89 89 135 92 51 62 46 37 246 175 195 125
14 89 89 135 92 56 62 41 37 275 173 191 122
15 89 89 135 92 60 62 41 38 300 173 180 121
16 89 89 135 90 60 62 48 38 305 171 170 105
17 89 89 135 90 60 62 49 38 337 133 194 93
18 89 89 137 90 60 63 40 38 367 89 251 93
19 89 89 137 90 59 63 38 38 364 107 273 93
20 89 89 137 92 59 63 38 39 329 147 276 93
21 89 89 136 91 59 74 37 39 300 160 276 94
22 89 89 136 91 59 83 36 39 287 160 276 94
23 89 90 137 91 59 78 37 39 287 160 247 94
24 89 90 139 84 59 63 37 61 287 161 198 93
25 89 89 139 70 59 61 37 78 286 156 189 92
26 90 89 139 70 59 51 37 77 276 179 187 90
27 89 112 139 70 59 42 37 77 268 221 179 90
28 89 137 140 70 59 42 37 76 249 273 179 90
29 89 137 139 70 --- 41 37 76 237 288 180 90
30 89 135 139 70 --- 40 37 63 229 257 179 90
31 89 --- 141 70 --- 39 --- 53 --- 238 179 ---

TOTAL 2759 2837 4230 3056 1655 1841 1234 1427 7710 5971 7404 3656
MEAN 89.0 94.6 136 98.6 59.1 59.4 41.1 46.0 257 193 239 122
AC-FT 5470 5630 8390 6060 3280 3650 2450 2830 15290 11840 14690 7250
MAX 90 137 141 141 70 83 53 78 367 288 385 179
MIN 88 89 135 70 51 39 36 37 76 89 170 90

CAL YR 2006 TOTAL 40904 MEAN 112 MAX 296 MIN 35 AC-FT 81130
WTR YR 2007 TOTAL 43780 MEAN 120 MAX 385 MIN 36 AC-FT 86840

MAX DISCH: 397 CFS AT 19:15 ON Jun. 18, 2007 GH 2.47 FT. SHIFT -0.02 FT.
MAX GH: 2.47 FT. AT 19:15 ON Jun. 18, 2007

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