WSP01580

• File Number: 8143.800
• Description: John Martin Reservoir - Water and Contracts
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 12/1/2000
• Title: Report of the Colorado State Engineer - Concerning Accounting of the Operations of an Offset Account in John Martin Reservoir for Colorado Pumping - 1998 -- Part 2 of 2
• Water Supply Pro - Doc Type: Report/Study

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STATE OF COLOMDO

WATER DIVISION 2
OFFICE OF THE STATE ENGINEER

310 East Abriendo, Suite B
Pueblo, Colorado 81004
Phone: [phone]
FAX: [phone]

November 16, 2000

Bill Owens
Governor

httpJ/water.state.co.us/default.htm

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

Hal D. Sl(l1PSOI1, 1'.[
Slate Engineer
$levcnJ.Wilte,I'.E.
Division Engineer

GregE.Walcher
Executive Dir('(!o[

Ms. Mary Louise Clay
Recording Secretary
Arkansas River Compact Administration
307 South Fifth Street
Lamar, CO 81052

RE: Monthly Repor( of Colorado Pumping and Offset Account Operations for September, 2000

Dear Mr. Pope and Ms. Clay:

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
As Amended March 30, 1998 ("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 September, 2000.

Table I shows the amount of pumping during the month of September, 2000 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
AMENDED RULES AND REGULATIONS GOVERNING THE DIVERSION AND USE
OF TRIBUTARY GROUND WATER IN THE ARKANSAS RIVER BASIN,
COLORADO ("Rules") approved in Case No. 95CW2ll.

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