PROJC01741 ‎(3)‎

• Contract/PO #: C153768
• Contractor Name: Lower Arkansas Water Management Association
• Contract Type: Loan
• Water District: 67
• County: Bent
• County: Prowers
• Bill Number: SB 96-124
• Loan Projects - Doc Type: Feasibility Study

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
:1
I
I

diverts from the Purgatoire River. The diversions for LAWMA's prorata interest for 3,569
shares averaged 7,712 acre-feet annually for 1950 through 1993. The stream
depletions averaged 4,917 acre-feet for 1950 through 1993 and 6,372 acre-feet annually
for 1980 through 1993. It is expected that LAWMA could regulate this water in the
Offset Account or could use the historical depletions directly to replace well depletions.

5.

LAWMA may acquire additional Fort Bent Ditch Company stock. For 1950 through
1994, the historical consumptive use averaged 0.75 acre-feet per share and ranged
from 0.29 to 1.21 acre-feet per share in 1964 and 1952, respectively. For 1980 through
1994, the historical consumptive use averaged 0.84 acre-foot per share and ranged
from 0.63 to 1.04 acre-feet per share in 1981 and 1985, respectively. LAWMA would
use this supply to replace depletions with respect to downstream Colorado ditches and
to Usable Stateline Flow. Currently, LAWMA owns 120 shares and can use 1,505
shares for replacement purposes. These shares would yield about 1,220 acre-feet
annually.

6.

LAWMA may acquire shares in the Amity Mutual Irrigation Company. LAWMA's prorata
share of the deliveries would be delivered to the Arkansas River and the consumptive
use portion would be credited to LAWMA's replacement obligation. The historical
consumptive use averaged 1.27 acre-feet per share for 1950 through 1994 and ranged
from 0.25 to 1.98 acre-feet per share in 1964 and 1971, respectively. For 1980 through
1994, the historical consumptive use averaged 1.50 acre-feet per share and ranged
from 1.08 to 1.86 acre-feet per share in 1981 and 1985, respectively.

7.

The "Resolution Concerning an Offset Account in John Martin Reservoir for Colorado
Pumping" was approved in March 1997. It established a 20,000 acre-foot storage
account in John Martin Reservoir which may be used by Colorado well users to regulate
replacement supplies. It is expected that the Highland water and LAWMA's Article 1\
Storage Account water could be regulated in this account to make up depletions with
respect to Usable Stateline Flow. The disadvantages of using the account is the
payment of "Storage Charge Water" to Kansas in the amount of 500 acre-feet annually
plus 5 percent of water stored in excess of 10,000 acre-feet. Also, the water regulated
in the account may be charged for up to two months of additional evaporation for water
regulated and transferred to Kansas.

8.

LAWMA's replacement water supplies, including the Highland acquisition, are expected
to yield about 17,680 acre-feet annually. This results in a potential shortfall of 369 acre-
feet. If LAWMA must continue to purchase the 500 acre-feet of Storage Charge Water
and considering additional evaporation losses due to the operation of the Offset

Page 19