WSP01274

• File Number: 8135.300
• Description: Ditch Companies - Catlin
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 1/1/1973
• Author: USGS
• Title: Colorado Water Resources-circular Number 20 - Transit Losses and Travel Times for Reservoir Releases - Upper Arkansas River Basin - Colorado
• Water Supply Pro - Doc Type: Report/Study

076fl

.

EXAMPLE 4

RELEASE FROM

Twin Lakes RESERVOIR TO

Colorado Canal

Date of release: 7-20-71

Amount of release: ~ft3/s

Duration of release: ~days (240 hours)

Flow at Wellsville gaging station prior to release: 2~ft3/B
(Call 539-6487 for stage. obtain discharge from table 2)

Time of travel (fig. 3): ~hours

2

TRANSPORTATION LOSSES
Bank storage (fig. 6)
3

0-1
1-3
3-11
11-21
21-72
72- 312
312+

1
2
8
10
51
240

Actual time
in interval
(hours)
1
2
8
10
51
168

4
Average
bank st.orage
in interval
(ftJ/s)

235
120
65
40
2S
15

5
Bank storage
in time interval
(col. 3 x col. 4.
hours x ft3/s)

235
240
520
400
1,275
2,520

Time interval
(hours)

Maximum time
in hours

Totals 240

5,190

Charge for bank storage loss is 70 percent of column 5 divided by duration of release:
Inadvertent diversions
Charge for inadvertent diversion losses (fig. 7):
Evaporation
Surface area incre3se (fig. 8): 30 acres
Charge for change in surface area~ ~):
Charge for change in river temperature (fig. 10):

~ft3/s
.....?.:.Q....ft 3/5

0.4 ft 3{s
o -ft3/s

24.5 ft 3{s
6.1 :t

.'

TOTAL TRANSPORTATION LOSS---------------------------------------------------------------------
TOTAL TRANSPORTATION LOSS (percent of rel~ase)----------------------------------------------__

DIVERSION SCHEDULES
Prior to recession at Colorado Canal
2 3 4 5 6 7 8 9
Average Channel Average
Time Maximum time Release bank storage Inadvertent Evaporation storage Total divertible
interval in hours discharge (col. 4 above, diversion (ft'/s) (fi~. 4, (cols. 4-7. discharge
(hours) (ft3/s) ft3/s) (ft3/s) ft Is) ft3/s) (ft3/s)
0-1 1 400 235 9.0 0.4 315 559
1-3 2 400 120 9.0 .4 215 344 56
)-11 8 400 65 9.0 .4 100 174 226
11-21 \0 400 40 9,0 ,4 30 89 311
21-72 51 400 25 9,0 ,4 0 34 366
72-312 240 400 15 9.0 .4 24 376
312+

Release arrived at 1230 hours

During recession at Colorado Canal

final divertible discharge from column 9 above---------------------------------------------------
Release recession began at 0600 hours

~ft3/s

.

Time interval from beginning
of recession (hours)

0-4
4-8
8-12
12-16
16-22
22-32

Average divertlble discharge
(fh. 11. ft3/s)

323
227
142
75
24
o

35