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

EXAMPLE 1

RELEASE FROM

'i'win Lakes

Colorado Canal

RESERVOIR TO

Date of release: 5-1-68

Amount of release: ~ft3/s

Duration of release: -1i-daye (~hours)

Flow at Wellsville gaging station .prior- to l'"elease: ~ft3/s
(Call 539-6487 for stage, obtain discharge from table 2)

Time of travel (fig. 3): ~hour8

~J ,,~
,

.

2

TRANSPORTATION LOSSES
Bank storage (fig. 6)
3

4
Average
bank storage
in interval
(te'ls)

705
355
190
125
70
35
15

Time interval
(hours)

Maximum time
1n hours

Actual time
1n interval
(hours)
1
2
B
10
51
240
~

336

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

1
2
8
10
51
240

Totals

5
Bank storage
in time interval
CcoI. 3 l\: co!. 4,
hours )( ft3/s)

705
710
1,520
1,250
3,570
8,400
~

16,515

~ft3/s

Charge for bank storage loss 1s 70 percent of column 5 divided by duration of relesse:
Inadvertent diver~ions
Charge for inadvertent diversion losses (fig. 7):
Evaporation
Surface area increase (fig. 8): 280 acres
Charge for change in surface area (fig. 9):
Charge for change in river temperature (fig. 10):

TOTAL T~~SPDRTATION LOSS---------------------------------------------------------------------
TOTAL TRANSPORTAtION LOSS (percent of re1e88e)------------------------------------------------

DIVERSION SCHEDULES
Prior to recession sc Colorado Canal
2 3 4 5 6 7 8
Average Channel
Time Maximum time Relea8e bank storage Inadvel.-tent Evaporation storage Total
interval in hours discharge (col. ~ above, diversion (fe'ts) (f1~. 4, (cols. 4-7,
(hours) (ft'ts) ft3/s) (fe'/s) ft Is) ft3/s)
0-1 1 500 705 45.0 4.2 395 1,149
1-3 2 500 355 45.0 4.2 275 679
3-11 8 500 190 45.0 4.2 125 364
11-21 10 500 125 45.0 4,2 40 214
21-72 51 500 70 45.0 4.2 2 121
72-312 240 500 35 45.0 4,2 84
312+ 500 15 45.0 4,2 64

Release arrived at 1500 hours

~ft3/S

4.2 ft3/s
o ft3/s

~3. b ftJ Is
16.7 %

.

9
Average
divertible
discharge
(ft3/s)

136
286
379
416
436

During recession at Colorado Canal

Final divertible discharge from column 9 above---------------------------------------------------
Release recession began at 1100 hours

time interval from beginning
of recession (hours)

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

Average divertible discharge
(fi.. ii, fe'ts)
379
272
178
105
44
5

~ft3/B

.

32