WSP08233

• File Number: 8143.600.10.B
• Description: John Martin Reservoir - Operation Studies
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 5/4/1973
• Author: D. Helton
• Title: The Catlin Transfer Plan
• Water Supply Pro - Doc Type: Report/Study

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and were determined by subtracting the amounts in columns 3 and 4

from the amounts in column 2. Excess depletions in column 9 and

depletion shortages in column 10 were determined by comparing the

state credit at the Catlin headgate with the historic consumptive

use, which was obtained from table 4.

It can be seen in table 5 that the total of depletion short-

ages is greater than the total of excess depletions. Excess deple-

tions occur during the years when a larger water supply is available,

and depletion shortages occur during the dryer years. During all

_ years except the flood year of 1965, the amounts left in the river

were greater than the excess depletions. Thus, the vested rights

of other water users are not only protected by this plan but actually

improved by making additional water available during the dryer years.

The amounts of water that were available in the simulation for

evaporation replacement at John Martin reservoir are shown in

column 7 on table 5. They were determined by deducting the trans-

mission losses (5.5 percent) from the state credit at the Catlin

headgate. The state's storage decrees in the transfer plan are

6.383 percent (6.755% x 0.945 = 6.383%) of the amounts of the

original Catlin decrees. The annual " amounts range from a low of

1,640 acre-feet in 1954 to 4,808 acre-feet during seven of the

24 years and average 3,789 acre-feet; they will provide a satisfac-

tory permanent pool operation.

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Figure 2 is a circle graph, wh-ich depTcts the disYiinuEi6n of _u_

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