WSP05149

• File Number: 8180.800
• Description: Purgatoire River Project
• Basin: Arkansas
• Water Division: 2
• Date: 9/1/1949
• Author: RJ Tipton
• Title: Engineering Report on Flood Control and Irrigation District with Particular Reference to the Piedmont Bridge Dam and Reservoir Site
• Water Supply Pro - Doc Type: Report/Study

a
en
.....1
c;

Table No.5 (Cont'd)

Estimated Costs and Annual Charges
Piedmont Bridge Dam and Reservoir

10.500

Irrigation
$ 300.367
14.500
$ 314,867
$ 538.527

Item

Flood Control

Amortization 3% over 50 years

Operation and Maintenance

Total Annual Charge

Grand Total Annual Charge

The ratio between the annual cost of the project for flood

$ 213,160

$ 223.660

.

.

control and the annual benefit previously determined as an amount'

not exceeding $134,055 is 1:060. The ratio between the annual

trrigation cost of $314.867 and the irrigation benefit to the

nation as a whole previously estimated at $379.926 is 1:1.2l.

The relation between the annual costs of the project as a whole

and the annual flood control and irrigation benefits is 1:0.95.

It was estimated that payment by the local beneficiaries. together

with the proceeds from the mill levy for a district which might

be organized tD finance the project, would not exceed $42,327 per

year. This leaves a deficit of $126,741 with respect to the re-

.

payment of the irrigation features. An extended repayment period

Df 183 years would be required to repay the costs allDcated to

irrigation. However. the irrigation pool probably would be com-

pletely filled with sediment in 89 years.

From the fDregoing analysis it was concluded that the project

at the present time is infeasible. It is suggested that local

interests seek the construction of the authorized channelization

project, and that the storage project be reinvestigated at some

future date when construction costs have lowered and when and if

Congress liberalizes the reclamation law.
-25-