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

• 9903334_P1CB accretions and 9903334_P1RB accretions replace 9903334_A depletions
• 9903334_P1CD accretions and 9903334_P1RD accretions replace 9903334_B depletions
• 9903334_P1CD accretions and 9903334_P1RD accretions replace 9903334_A depletions
• 9903334_P1CE accretions and 9903334_P1RE accretions replace 9903334_B depletions
• 9903334_P1CE accretions and 9903334_P1RE accretions replace 9903334_A depletions
Remaining summer well depletions on the South Platte below Kersey (stored under plan IDs
9903334_A and 9903334_B) should be replaced with a bypass of a portion of the direct flow
water rights changed in the Central GMS augmentation plan (see Table 6 for list of changed
water rights associated with GMS plan). Operations of bypasses require maintenance of
historical return flows, which should be added to the well depletion plan structure (ID
9903334_A).
The following operation should be simulated by exchange:
• Remaining summer well depletions on the South Platte above Kersey (stored under plan
IDs 9903334_C and 9903334 F) should be replaced with any remaining portion of the
direct flow water rights changed in the Central GMS augmentation plan (see Table 6).
4. Remaining credits available from changed water rights (after Step 3.) should be stored in
Central's storage units (see Table 5) either direct or by exchange, depending on the location
of the reservoir and location of the ditch credits.
5. Remaining depletions (stored under plan IDs 9903334_A, 9903334_B, 9903334_C, and
9903334 F) should be replaced year-round with releases of Central's various storage water
(see Table 5) -either direct or by exchange, depending on the location of the reservoir and
location of the well depletions.
6. Remaining well depletions met by pumping augmentation wells (various Structure IDs, see
Tables 2 and 4). Lagged depletions from augmentation well pumping represent an additional
demand on the well augmentation plan.
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