SPDSS_Task59-2_Irrigation Water Requirements at Climate Stations

• Title: SPDSS Task 59.2 - Irrigation Water Requirements at Climate Stations
• Description: SPDSS Task 59.2 – This memorandum presents the approach and results from the completion of the following Task 59 subtask: Using calibrated crop coefficients, estimate the irrigation water requirement for common crops grown at the key climate stations identified in Task 53.
• Decision Support - Doc Type: Task Memorandum
• Date: 3/24/2005
• DSS Category: Consumptive Use
• DSS: South Platte
• Basin: South Platte
• Contract/PO #: C153954
• 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

Figures 8 through 32 at the end of this memo show the total annual IWR for the crops at each
climate station from 1950 through 2003. As shown, IWR varies from year to year based on
temperature, which determines both length of growing season and potential consumptive use
during the growing season. IWR also varies from year to year based on precipitation, as less
irrigation water is required when more of the potential demand is met from rainfall.
Comments and Concerns
None.
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