WSP00980

• File Number: 8143.800
• Description: John Martin Reservoir - Water Sales and Contracts
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 12/1/1997
• Title: Report of the Colorado State Engineer - Concerning Accounting of the Operations of an Offset Account in John Martin Reservoir for Colorado Pumping - 1997 -- Part 1 of 2
• Water Supply Pro - Doc Type: Report/Study

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. WATER.OIVISION 2
OFFICE OF THE STATE ENGINEER
I 310 East Albriendo, Suite B
Pueblo, CO 81004
Phone [phone]
FAX [phone]

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STATE OF COLORADO

June 25, 1997

Roy Romer
Governor
James S. Lochhead
Executive Director
Hal D. Simpson
State Engineer
Steven 1. Witte, p.E.
Division Engineer

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Mr. Don Higbee
Recording Secretary
Arkansas River Compact Administration
307 South Fifth Street
Lamar, CO 81052

David L. Pope
Kansas Chief Engineer
Kansas Board of Agriculture
901 S. Kansas Avenue, 2nd Floor
Topeka, KS 66612-1283

RE:

Monthly Report of Colorado Pumping and Offset Account Operations for April, 1997

Dear Mr. Higbee and Mr. Pope:

The purpose of this letter is to provide the monthly report required by paragraph 12 of the
Resolution Concerning an Offset Account in John Martin Reservoir for Colorado Pumping
dated March 17, 1997 ("Resolution"). This letter reports the monthly pumping in excess of
Colorado's pre-Compact entitlement, Colorado's monthly accounting of Compact compliance,
and the status of water delivered to the Offset Account, all during the month of April, 1997.

Table I shows the amount of pumping during the month of April, 1997 by irrigation wells
pumping from the Valley Fill Aquifer and surficial aquifers along the Arkansas River betWeen
Pueblo and the Stateline, as well as the corresponding wellhead depletions, by user group. The
wellhead depletions were computed using the presumptive stream depletions in Rule 4.2 of the
:.. ~NDED RULES AND REGULATIONS GOVERNING THE DIVERSION AND USE
OFTIUBUT.AR.YGROUND WATER IN THE ARKANSAS RIVER BASIN,
COLORAD6("Rules") approved in Case No. 95CW211.

Table 2 shows the wellhead depletions due to pumping by irrigation wells in the user groups
below John Martin Reservoir that is in excess of the pre-Compact entitlements.

Since the depletions caused by pumping above John Martin Reservoir were fully replaced, and
that accounting has been provided to Kansas, and the depletions caused by pumping below JoOO
Martin Reservoir which affeCt senior surface water rights in Colorado were fully replaced, and
that accounting has been provided to Kansas, the accounting in this report shows only remaining
depletions caused by-irrigation pumpingin excess"ofthe pre-Compact entitlements for those'" ."

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