2015-02-25_HYDROLOGY - M1985112

• Permit No: M1985112
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/25/2015
• Doc Name: Loloff Substitute Water Supply Plan
• From: DNR Division of Water Resources
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

Loloff Pit SWSP
February 25, 2015
Page 5 of 7
In addition, the Applicant shall verify that entity providing replacement water for this plan, in
this case the City of Greeley, has included such use on their accounting submitted to the Division
Engineer.
12. All pumping for dust control purposes shall be measured in a manner acceptable to the division
engineer. Permanent records of all diversions must be maintained by the well owner (recorded
at least monthly) and submitted to the division engineer on submitted accounting forms.
13. The Applicant shall perform an inspection and provide verification for all parcels of dried up land
used to generate augmentation credits during the term of this SWSP. The final verification of dry
up will be in the form of an affidavit signed by an individual having personal knowledge of the dry
up for the entire irrigation season for each parcel of land used in this SWSP. In accordance with
the attached protocol for dry-up of irrigated land, the Applicant shall provide a written
notification to the water commissioner and division engineer by April 1, 2015 identifying the
lands to be dried up for the 2015 irrigation season. By October 31, 2015 the Applicant shall
provide an affidavit to the water commissioner and division engineer that identifies and confirms
the lands that were dried up during the 2015 irrigation season in order that the final
determination of augmentation credits for the irrigation season can be made along with mapping
showing any revisions to the dried -up acreage. A GIS shapefile must be emailed to
[e-mail] for each dry-up notification and affidavit. The shapefile shall
include the WDID of the plan, the acreage of dry-up, and any accompanying metadata. In
addition, the datum must be NAD83 and the UTM projection must be Zone 13 North.
The historical consumptive use calculated for the ditch shares to be changed by this SWSP shall
not include any credit resulting from the consumption of ground water. In order to ensure the
required dry-up conditions exist during the approval period of this SWSP, and to ensure no credit
is given for the consumption of ground water, the Applicant shall provide records of monthly
monitoring of depth to ground water for all fields required to be dried -up under this SWSP.
Information regarding depth to ground water may be provided using existing irrigation wells,
existing or new monitoring wells, or piezometers located on the dried -up fields. Applicant may
utilize wells or piezometers located within 1/a mile of each field provided the Applicant can
demonstrate the depth to ground water information available off -site is representative of the
depth to ground water on the dried -up field. The Applicant shall modify accounting to reflect
that the credit from any dried- up fields containing alfalfa or native grass was reduced according
to the following table. Measurements taken at the start of each month will determine the
necessary reduction in credit to be applied during the following month. The Applicant may use
another methodology upon review and prior approval by the State Engineer and Division Engineer.
Depth to Ground Water
(Feet)
Percent Reduction in CU Credit'
Native Grass
Alfalfa
1
85%
100%
2
50%
90%
3
30%
75%
4
20%
50%
5
15%
35%
6
10'0
20%
7
5%
15%
8
0%
10%
1. Adapted from EVAPOTRANSPIRATION AND AGRONOMIC RESPONSES IN FORMERLY IRRIGATED MOUNTAIN
MEADOWS, South Pork, Colorado, March 1, 1990; Revised September 1, 1991