2014-03-19_HYDROLOGY - M1996049

• Permit No: M1996049
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/19/2014
• Doc Name: Substitute water supply plan
• From: Division of Water Resources
• To: Resource Engineering, Inc.
• Email Name: ECS
• Media Type: D
• Archive: No

Mr. Raul Passerini, P.E.
March 19, 2014
Page 9
18. 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. The Applicant shall provide a written notification to the water
commissioner and division engineer by April 15, 2014 identifying the lands to be dried
up for the 2014 irrigation season. By October 31, 2014 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 2014 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 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 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%
20%
7
5%
15%
8
0%
10%
2. Adapted from EVAPOTRANSPIRATION AND AGRONOMIC RESPONSES IN FORMERLY IRRIGATED
MOUNTAIN MEADOWS, South Park, Colorado, March 1, 1990; Revised September 1, 1991
19. All diversions and deliveries of replacement water shall be measured in a manner
acceptable to the division engineer. The Applicant shall install adequate measuring
devices as required by the division engineer for the operation of this SWSP.
20. The approval of this SWSP does not relieve the Applicant and /or the landowner of the
requirement to obtain a Water Court decree approving a permanent plan for