WSP01459

• File Number: 8143.600.30
• Description: John Martin Reservoir - Other Studies
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 8/6/1984
• Title: Proposed Winter Storage Plan for Highland Irrigation and Ninemile Ditch Companies
• Water Supply Pro - Doc Type: Report/Study

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WINTER STORAGE PROGRAM FOR THE
HIGHLAND AND NINEMllE CANAL COMPANIES

I.

Historitol Basis

A. Use the historic period of compact years 1978-82 because --
1. Bill Howlond was the hydrographer during this time period; con-
sequently, the records for this time period should be reliable.
Prior to this time period, the records are inconsistent and questionable.
2. Trinidad Reservoir, which became operational in 1977, seems to
have had a beneficial impact on the flows available in this reach
of the Purgatoire River. Prior records are not strictly comporoble
to the records after Trinidad became operational.
B. Average November-through-March streomflow at the gauging
station on the Purgatoire River near las Animas = 4,013 acre-feet
C, Average November-through-March diversions into the
Highland and Ninemile Canals
D. Total

=

4,934 acre;-feet
8,947 acre-feet

E. Percent Highland and Ninemile diversions were
of total = 4,934 . 8,947 x 100%

= 55%

II.

Proposed Operation plan I'
ll"H'~""'" ...
A. The winter storage program would be effective beginning on D"c.",,,L,,, 15-,
1982, ond would extend until March 15, 19'03.
B. The streamflows at the gouging station on the Purgatoire River near las
Animas during this time period would be measured and recorded. A
volume of water equal to 55 percent of the total recorded streamflow
at the gauging station on the Purgatoire River near las Animas would be
delivered to the John Martin Reservoir for the Highland and Ninemile
Conal Companies.