RGDSS_Historic_CUreport_20040601

• Title: RGDSS - Rio Grande Historic Crop Consumptive Use Analysis
• Description: The documentation is for the Rio Grande Basin Historic Crop Consumptive Use Analysis, developed during the RGDSS implementation for the period 1950 through 2002. It includes 100 percent of the crop consumptive use in the basin for the period. Documentation consists of the final Historic Crop Consumptive Use Analysis Report and supporting appendices.
• Decision Support - Doc Type: Modeling Dataset Documentation
• Date: 6/1/2004
• DSS Category: Consumptive Use
• DSS: Rio Grande
• Basin: Rio Grande
• Contract/PO #: C153863
• Grant Type: Non-Reimbursable
• Bill Number: HB98-1189, SB99-173
• Prepared By: Leonard Rice Engineering

Results
As shown in Table 1, a good linear correlation was found between temperature stations, therefore
linear regression was used to fill missing temperature values in the temperature data set. A linear
relationship was not clear for precipitation and frost date data. Figures 1 and 2 show examples of
the poor precipitation relationships found between Alamosa and Del Norte climate stations and
between Center and Alamosa climate stations. Figures 3 through 6 show examples of the poor
spring and fall frost date relationships found between Alamosa and Del Norte climate stations
and between Center and Alamosa climate stations, therefore, tstool was used to fill missing
precipitation values with average monthly values for the period of record, and fill missing frost
date values with average frost date values for the period of record.
Figure 1
Alamosa vs Del Norte Precipitation
1950-1997 April through October Data
A
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E 3
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a
y = 0.5323x + 0.217
' RZ = 0.5083
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0.5 1 1.5 2 2.5 3 3.5 4 4.5
Del Norte
appendD_cropcu.doc D-4 of D-9 10/28/99