SPDSS_Task7-2_WellUseWellAugmentationPlans

• Title: SPDSS Task 7.2 - Well Use and Well Augmentation Plans
• Description: This memorandum and associated appendices characterizes the 20 largest well augmentation plans and develops recommendations for representing well use and augmentation in SPDSS modeling efforts.
• Decision Support - Doc Type: Task Memorandum
• Date: 12/14/2007
• DSS Category: Groundwater
• DSS: South Platte
• Basin: South Platte
• Contract/PO #: C153953
• Grant Type: Non-Reimbursable
• Bill Number: SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
• Prepared By: Leonard Rice Engineering

Various direct flow rights have been decreed for Central's use for storage, recharge,
augmentation, and other uses, as summarized in Table 6. The Central GMS subdistrict is
constantly adding new replacement supplies to its portfolios. Therefore, Table 6 represents a
water rights query associated with Plan ID 3334 in HydroBase (Version 20060816) and should
be updated prior to modeling efforts.
Table 6
Central GMS Au mentation Plan S stem Chan ed Direct Flow Water Ri hts
Decreed Rate
Ditch Name Approp. Adjud. Admin
No (cfs) ~~°
D D .
. hi
O
ate ate wners
p
Total Central
3/1/1866 5904.0 32.5 0.5078
Boxelder Ditch 5/25/1867 6354
0 8
33 0
13 1
56
ID 0300926 . . . .
(
) 7/1/1868 6757.0 11.93 0.186
New Cache Ditch

(ID 0300929)
4/11/1882 9/15/1877 10120.0 121 0.3840 0.32
4/1/1870 7396.0 52 1.25
Canal No. 3 10/1/1870 7944.0 41 0.98
2
4
(ID 0300934) 7/15/1872 8232.0 63.13 1.52 .
5/15/1873 8536.0 16.67 0.40
Jacoby-Schmidt Ditch

(ID 0301334) 12/31/1972 12/31/1931 44589.29589 2.42 1.21 50
Augmentation Plan Operations
Operating rules to replace river depletions from well pumping include the following in order of
use:
1. Well depletions (stored under plan IDs 9903334 A, 9903334 B, 9903334_C, 9903334_D,
9903334_E, and 9903334 F) should be replaced year-round by natural flows when in
priority, i.e., when no downstream call or when downstream call is junior to specific well
priority dates used in administration of the plan.
2. Well depletions (stored under plan IDs 9903334_A, 9903334_B, 9903334_C, 9903334_D,
9903334_E, and 9903334 F) should be replaced year-round with available recharge
accretions from canal seepage and recharge seepage as follows (listed in generally upstream
to downstream order):
• 9903334_P1CF accretions and 9903334_P1RF accretions replace 9903334 F depletions
• 9903334_P1CC accretions and 9903334_P1RC accretions replace 9903334_C depletions
• 9903334_P1CB accretions and 9903334_P1RB accretions replace 9903334_B depletions
• 9903334_P1CA accretions and 9903334_P1RA accretions replace 9903334_A depletions
• 9903334_P1CD accretions and 9903334_P1RD accretions replace 9903334_D depletions
• 9903334_P1CE accretions and 9903334_P1RE accretions replace 9903334_E depletions
• 9903334_P1CF accretions and 9903334_P1RF accretions replace 9903334_C depletions
• 9903334_P1CF accretions and 9903334_P1RF accretions replace 9903334_B depletions
• 9903334_P1CF accretions and 9903334_P1RF accretions replace 9903334_A depletions
• 9903334_P1CC accretions and 9903334_P1RC accretions replace 9903334_B depletions
• 9903334_P1CC accretions and 9903334_P1RC accretions replace 9903334_A depletions
A-9 of A-106