WSP10461

• File Number: 8111.808
• Description: Arkansas River Compact Administration - Transit Loss
• Basin: Arkansas
• Date: 1/1/1978
• Author: USGS
• Title: Transit Losses and Traveltimes of Reservoir Releases Along the Arkansas River from Pueblo Reservoir to John Martin Reservoir. Southeastern Colorado
• Water Supply Pro - Doc Type: Publication

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fall of releases from Pueblo Reservoir

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J

3,
42 to 63

Subreach 4,
river miles 63 to 94

Subreach 5,
river miles 94 to 121

Subreach 6,
river miles 121 to 142

Hours per Hours Hours per Hours Hours per Hours Hours per
mile mile mi Ie mile
60 2.22 80 3.81
56 2.07 75 3.57
85 2.74 50 1.85 66 3.14
72 2.32 45 1.67 56 2.67
1.33 60 1.94 35 1.30 45 2.14
1.05, 51 1.65 28 1.04 40 1.90
.90 41 1.32 22 .81 32 1.52
.76 33 1.06 17 .63 26 1.24
.62 24 .77 13 .48 20 .95
.48 19 .61 10 .37 16 .76
.38 16 .52 8 .30 13 .62
.33 14 .45 6 .22 11 .52
.29 12 .39 5 .19 9 .43
.24 10 .32 4 .15 8 .38
.24 9 .29 4 .15 7 .33
.19 8 .26 3 .11 6 .29
.19 8 .26 3 .11 5 .24
.14 7 .23
.14 7 .23
.14
OF THE USE OF THIS TABLE:
Solution

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The Catlin Canal headgate is at river mile 61.0 (table 1). Traveltime to the
Catlin Canal headgate is 28.5 hours after the time of release from Pueblo
Reservoir (table 6). Because the transit loss is 6.8 percent (table 5),
the final diversion rate will be 186.4 ft3/s (200 ft3/s x 93.2 percent).
Times of rise or fall in subreaches 1 and 2 are shown directly in the above
table as 11 hours in sub reach 1 and 7 hours in subreach 2. Time of rise or
fall in subreach 3 is about 9 hours (10 miles x 0.48 hour per mile) for the
19 mi les (61 mi les - 42 mi les) in subreach 3. The total time of rise or
fall at Catlin Canal is, therefore, 27 hours(11 hours + 7 hours + 9 hours).
To allow for at least three steps, the steps could be made at intervals of
9 hours (27 hours. 3) and each step could be made in increments of 62.1
ft3/s (186.4 ft3/s f 3). The resulting diversion schedule is shown on fig-
ure 8.

27

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