DWR_2669027

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 1991
• Document Type - Publications and Reports: Streamflow Report

46

TRANSMOUNTAIN DIVERSION TO

PLATTE RIVER BASIN

09050590 HAROLD D. ROBERTS TUNNEL NEAR GRANT, CO

LOCATION.--Lat 39°27'50", long 105°41'01"; Harold D. Roberts tunnel diverts water from Dillon Reservoir in Blue River
basin, to North Fork South Platte River (tributary to South Platte River) in SW¼SW¼ sec. 4, T. 7 S., R. 74W., in
Platte River basin.

GAGE.--Water-stage recorder with satellite telemetry in a concrete shelter at a 20-ft Parshall flume. Elevation of gage
is 8695 ft by topographic map. Station is owned and maintained by the Denver Water Dept, who also generate power
from the tunnel flow.

REMARKS.--Record from hourly satellite data is complete and reliably agrees with chart data. Where gaps exist in the
chart recording, the satellite data was found to check closely with Denver Water Dept. readings of flow. Record
is good. The satellite telemetry is maintained and the record is developed by Robert Cooper.

RATING TABLE.--ROBTUNCO02 USED FROM 01-OCT-1990 TO 30-SEP-1991

DISCHARGE, IN CFS, WATER YEAR OCTOBER 1990 TO SEPTEMBER 1991
MEAN VALUES

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

1 0.0 0.0 131 105 103 85 82 0.0 195 372 174 0.0
2 0.0 0.0 131 105 103 84 81 0.0 218 371 174 0.0
3 0.0 0.0 114 105 103 84 81 0.0 218 444 161 0.0
4 0.0 0.0 106 105 103 84 85 0.0 217 444 148 0.0
5 0.0 0.0 106 105 103 84 94 0.0 220 444 148 0.0
6 0.0 12 106 105 103 84 94 0.0 219 444 148 0.0
7 0.0 29 106 105 103 84 94 0.0 103 444 148 0.0
8 0.0 35 106 105 102 85 93 0.0 0.0 444 82 0.0
9 0.0 35 106 105 102 85 93 0.0 0.0 397 0.0 0.0
10 0.0 35 106 105 102 85 93 0.0 0.0 322 0.0 0.0
11 0.0 34 106 105 102 85 86 0.0 0.0 298 0.0 0.0
12 0.0 35 106 105 102 85 84 0.0 0.0 298 0.0 0.0
13 0.0 34 106 105 102 85 84 0.0 0.0 298 0.0 0.0
14 0.0 34 106 105 102 85 84 0.0 0.0 299 0.0 0.0
15 0.0 37 106 105 95 85 84 0.0 0.0 282 0.0 0.0
16 0.0 46 106 103 86 85 84 0.0 0.0 256 28 0.0
17 0.0 59 106 103 86 85 84 0.0 0.0 256 91 0.0
18 0.0 59 106 103 86 85 84 0.0 0.0 256 91 0.0
19 0.0 58 106 103 86 85 84 0.0 66 256 91 0.0
20 0.0 59 106 103 86 85 84 0.0 222 256 50 0.0
21 0.0 93 102 103 86 85 82 0.0 230 256 0.0 0.0
22 0.0 122 107 103 86 85 82 0.0 230 234 0.0 0.0
23 0.0 115 106 103 86 84 35 0.0 230 218 0.0 15
24 0.0 116 105 103 86 84 0.0 0.0 242 216 0.0 127
25 0.0 116 105 103 84 78 0.0 0.0 349 215 0.0 215
26 0.0 116 105 103 85 75 0.0 31 428 218 0.0 215
27 0.0 116 105 103 85 84 0.0 52 434 217 0.0 215
28 0.0 116 105 103 85 84 0.0 52 437 195 0.0 214
29 0.0 125 105 103 --- 84 0.0 91 437 173 0.0 213
30 0.0 131 105 103 --- 84 0.0 152 437 174 0.0 213
31 0.0 --- 105 103 --- 83 --- 153 --- 173 0.0 ---

TOTAL 0.0 1767 3333 3223 2643 2604 1931 531 5132 9170 1534 1427
MEAN 0.0 58.9 108 104 94.4 84.0 64.4 17.1 171 296 49.5 47.6
AC-FT 0.0 3500 6610 6390 5240 5170 3830 1050 10180 18190 3040 2830
MAX 0.0 131 131 105 103 85 94 153 437 444 174 215
MIN 0.0 0.0 102 103 84 75 0.0 0.0 0.0 173 0.0 0.0

CAL YR 1990 TOTAL 27276.4 MEAN 74.7 MAX 440 MIN 0.00 AC-FT 54100
WTR YR 1991 TOTAL 33295 MEAN 91.2 MAX 444 MIN 0.00 AC-FT 66040

MAX DISCH 447 CFS AT 1900 02-JUL-1991 GH 3.01 FT. SHIFT 0.01 FT. MAX GH 3.01 FT. AT 1900
02-JUL-1991