HYDRO20502

• Permit No: M1977522
• IBM Index Class Name: Hydrology
• Doc Date: 3/26/2007
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Applegate Group, Inc.
• Media Type: D
• Archive: No

Page 2
Ms. Michelle Austin
March 14, 2007
consumptive use minus 3.92 acre-feet of historical non-irrigation season return flow obligations) of
historical net stream depletions from the dry-up of 14 acres historically irrigated by these shares.
In addition, during the Water Year 2007, a lease of 26.84 acre-feet from the Lake Canal and
Reservoir Company ("LCRC") will make replacements for depletions from November 2006 through
October 2007 not covered by the Greeley Canal #3 shares. A copy of the LCRC lease was submitted to
this office on January 17, 2007 and is attached to this letter. The source of the replacement water will be
from Gray Lakes, which can deliver water to Box Elder Creek and from there to the Cache La Poudre
River. Approximately 1.44 acre-feet of water from the-Gray Lakes are estimated to be required to replace
transit losses. The water storage right for the Gray Lakes owned by LCRC is not presently decreed for
augmentation, therefore a change of use application for the Gray Lakes water storage right was filed with
the Division 1 Water Courtin case no. 2006CW276. A detailed historical consumptive use analysis has
not been provided in case no. 2006CW276. According to the information provided by TZA Water
Engineers, Inc. ('TZA") in a letter dated March 15, 2006, LCRC water rights have historically been used to
provide supplemental water to irrigated lands within the Lake Canal Service area. Based upon the crop
mix, irrigated acreage and water available for irrigation, TZA concluded that the Lake Canal system is
water short. TZA also noted that a historical consumptive use of 65% is not uncommon for the use of
supplemental reservoir water within water short ditch systems. For the purposes of this plan, and based
on the TZA initial analysis the consumptive use associated with the Gray Lakes water was assumed to be
50%. This also means 50°!0 of the delivered water constituted historical return flows, which must be
maintained. Therefore, in addition to the 26.84 acre-feet of water to be released for replacement
purposes, an additional 26.84 acre-feet (for a total storage release of 53.68 acre-feet) representing the
return flow component sh slant ise1eaueed to prov~de updated account ng to document the monthly a By
March 30, 2007, the App i q
amount and timing of releases to maintain the historical return flow obligations of the Gray Lakes water
used for replacement purposes.
The applicant is advised that if a subsequent request to use Gray Lakes water for
replacement purposes is submitted without a detailed historical consumptive use analysis being
jmitedeto 5% for the' GraylLakes water (55%assumed to be retumtflow).ed by the SEO will be
The monthly depletions and replacement requirements are found on the attached Table I.
I hereby approve the proposed substitute water supply plan in accordance with §37-90-137(11),
C.R.S., subject to the following conditions:
1. This plan is approved with the effective date of November 1, 2006 and shall be valid through October
31, 2007 unless otherwise revoked or modified. If this plan will not be made absolute by a water court
action by the plan's expiration date, a renewal request must be submitted to this office with the
statutory fee (currently $257) no later than September 15, 2007.
2, Well permit no. 54916-F was obtained for the current use and exposed pond surface area of the
gravel pit in accordance with §37-90-137(2) and (11), C.R.S. On April 25, 2005, the well permit no.
54916-F was amended to include dewatering as a use at the site.
3. The total surface area of the groundwater exposed at the Feit Pit after December 31, 1980 must not
exceed 29.7 acres during the months of November through March resulting in 15.4 acre-feet of
evaporative loss and 9.6 acres during the months of April through October resulting in 23.1 acre-feet
of evaporative loss.