DWR_2668867

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

21
PLATTE RIVER BASIN

06708000 SOUTH PLATTE RIVER AT WATERTON, CO

LOCATION.--Lat 39°29'18", long 105°05'32", in NE¼ sec. 34, T.6 S., R.69 W., Jefferson County, Hydrologic Unit
10190002, on left bank 168 ft downstream from bridge on State Highway 221, 0.4 mi south of Waterton, 4.7
mi west of Louviers, and 6 mi upstream from Plum Creek.

DRAINAGE AREA AND PERIOD OF RECORD.--2,621 mi²; 1926 to present.

GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in a 60-inch galvanized,
corrugated steel shelter and well at a concrete control (an armored pipeline crossing). The primary
reference is an electric tape gage. The gage has electric power and is equipped with heat lamps to
prevent the well from freezing. The gage has a bank operated cableway for high water measurement.
Satellite telemetry equipment owned and maintained by the Colorado Div. of Water Resources. The gage is
owned and maintained by Denver Water Dept. Datum of gage 5,484.43 ft National Geodetic Vertical Datum,
adjustment of 1912.

REMARKS.--The primary record is hourly averages of 15-minute satellite data with chart back up. The record is
complete and reliable, except for December 15–18, 22-24, 29-31, 2007,January 1-31, February 1-19, 26-28,
March 2-3, 2008, when ice affected the stage-discharge relationhsip. The record is rated good, except
for periods of ice affected record, December 15–18, 22-24, 2007, March 2-3, 2008 which are fair, and
December 29, 2007 to February 19, 2008, which are poor. Station maintained by Jana Ash and Patrick
Tyler and record developed by Jana Ash.

RATING TABLE.--PLAWATCO10 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 14 69 45 76 62 68 44 355 177 700 196 83
2 14 53 50 76 62 68 43 381 213 754 166 82
3 16 28 48 76 69 68 45 387 279 669 114 82
4 17 27 39 68 69 115 46 360 343 585 102 80
5 15 28 34 60 69 161 45 371 399 521 74 80
6 15 29 32 63 69 162 45 317 552 531 74 72
7 16 28 65 56 69 146 46 294 581 575 95 70
8 18 27 105 54 69 125 46 287 515 566 125 67
9 16 28 106 54 69 124 46 285 485 533 143 69
10 16 30 103 55 69 136 50 268 401 580 163 67
11 16 30 104 55 69 158 51 207 396 532 106 68
12 16 31 102 55 69 158 49 176 440 468 75 84
13 16 31 77 60 66 158 54 182 419 426 75 96
14 18 33 46 67 61 106 60 181 388 381 76 97
15 92 33 33 77 75 42 61 231 352 359 80 83
16 148 31 36 84 88 41 63 302 324 328 158 52
17 32 28 37 79 85 43 61 274 348 299 602 37
18 23 28 36 48 85 42 57 237 348 303 802 34
19 16 27 35 53 67 39 84 238 329 303 684 33
20 25 51 34 53 47 38 95 221 390 302 511 34
21 32 92 51 54 48 39 147 109 438 272 287 35
22 30 91 70 110 48 39 182 158 399 248 129 33
23 28 91 70 109 47 39 125 280 363 243 84 40
24 27 91 70 110 48 38 55 264 362 313 84 35
25 27 89 67 110 48 38 47 212 361 429 140 32
26 27 88 66 110 48 39 74 186 359 521 153 32
27 31 67 69 100 48 39 149 219 391 551 143 32
28 29 42 71 108 48 47 210 354 438 451 114 32
29 37 44 75 109 56 41 230 367 507 300 100 37
30 68 45 76 89 --- 47 312 258 655 303 72 31
31 68 --- 76 60 --- 45 --- 175 --- 258 88 ---

TOTAL 963 1410 1928 2338 1827 2449 2622 8136 11952 13604 5815 1709
MEAN 31.1 47.0 62.2 75.4 63.0 79.0 87.4 262 398 439 188 57.0
AC-FT 1910 2800 3820 4640 3620 4860 5200 16140 23710 26980 11530 3390
MAX 148 92 106 110 88 162 312 387 655 754 802 97
MIN 14 27 32 48 47 38 43 109 177 243 72 31

CAL YR 2007 TOTAL 121142 MEAN 332 MAX 1610 MIN 13 AC-FT 240300
WTR YR 2008 TOTAL 54753 MEAN 150 MAX 802 MIN 14 AC-FT 108600

MAX DISCH: 1210 CFS AT 19:30 ON Jul. 2, 2008 GH 2.51 FT. SHIFT -0.08 FT.
MAX GH: 2.51 FT. AT 19:30 ON Jul. 2, 2008

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