2012-07-25_HYDROLOGY - M1986123

• Permit No: M1986123
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/25/2012
• Doc Name: SUBSTITUTE WATER SUPPLY PLAN
• From: DWR
• To: DRMS
• Email Name: MAC
• Media Type: D
• Archive: No

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%
20%
Peter Wayland
July 23, 2012
Page 6
will be accepted for the dedication of the shares; however, if the State Engineer
determines that a different affidavit or dedication process is necessary to assure
proper dedication of the shares, additional information may be required prior to
future SWSP approvals.
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 identifying the lands to be dried up for the 2012 irrigation season. By
October 31, 2012, 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
2012 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. The Applicant shall provide a written notification to the water
commissioner and division engineer by April 1, 2013 identifying the lands to be dried up
for the 2013 irrigation season and the Applicant shall provide a written notification to the
water commissioner and division engineer by October 31, 2013 identifying the lands to
be dried up for the 2013 irrigation season. A GIS shapefile must be emailed to
Div1Accounting @state.co.us for each dry-up notification and affidavit. The shapefile
shall include the pending case number, the WDID of the plan, the acreage of dry-up,
and any accompanying metadata. In addition, the datum must NAD83 and the UTM
projection must be Zone 13 North. The Applicant shall modify accounting to reflect that
the credit from any dried up fields containing alfalfa or native grass was assessed in the
following manner:
(a) For fields deep tilled or chemically treated to successfully kill alfalfa or native grass,
100% credit will be given for consumptive use as otherwise computed under the
conditions of this approval.
(b) For fields not deep tilled or chemically treated to successfully kill alfalfa, records of
monthly monitoring of depth to groundwater at existing irrigation wells or existing or
new monitoring wells or piezometers within % -mile of each alfalfa or native grass
field must be maintained. Credits will be reduced according to the following table
when depth to groundwater is less than the depth assumed to provide no significant
contribution to alfalfa growth. 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 approval by the State
Engineer