SPDSS_Task59-1_Develop Locally Calibrated Blaney-Criddle Crop Coefficients

• Title: SPDSS Task 59.1 - Develop Locally Calibrated Blaney-Criddle Crop Coefficients
• Description: This memorandum presents the recommended regional Blaney-Criddle crop coefficients for use in the SPDSS CU analysis. Revised January 11, 2008
• Decision Support - Doc Type: Task Memorandum
• Date: 1/11/2008
• 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

PCU for Small Grains at the Greeley Climate Station
0.8
0.7
m 0.6
~ 0.5
Q
E 0.4
0 0.3
U
`-0 0.2
a° 0.1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
-ASCE Standardized - -Modified Blaney-Criddle, TR-21 Coeff.
PCU for Small Grains at the Sterling Climate Station
0.9
^• 0.8
0.7
~ 0.6
Q 0.5
E
~ 0.4
O 0.3
m
0.2
a° 0.1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
-ASCE Standardized PM - -Modified Blaney-Criddle, TR-21 Coeff.
Figure 23 - Avg PCU for Small Grains at Greeley Figure 24 - Avg PCU for Small Grains at Sterling
PCU for Sugar Beets at the Fort Collins Climate Station
0.7
m 0.6
~ 0.5
Q o.a
~ 0.3
0
U
m 0.2
:?
o° 0.1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
-ASCE Standardized - -Modified Blaney-Criddle, TR-21 Coeff.
PCU for Sugar Beets at the Fort Lupton Climate Station
0.7
m 0.6
~ 0.5
Q o.a
~ 0.3
0
U
m 0.2
:?
o° 0.1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
-ASCE Standardized - -Modified Blaney-Criddle, TR-21 Coeff.
Figure 25 - Avg PCU for Sugar Beets at Fort Collins Figure 26 - Avg PCU for Sugar Beets at Fort Lupton
PCU for Sugar Beets at the Greeley Climate Station
0.7
~ 0.6
N 0.5
n 0.4
E
~ 0.3
U
m 0.2
a 0.1
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
-ASCE Standardized - -Modified Blaney-Criddle, TR-21 Coeff.
PCU for Sugar Beets at the Sterling Climate Station
0.80
-~ 0.70
w
~ 0.60
~ 0.50
Q
E 0.40
~ j 0.30
m
0.20
o_ 0.10
0.00
-ASCE Standardized PM - -Modified Blaney-Criddle, TR-21 Coeff.
Figure 27 - Avg PCU for Sugar Beets at Greeley Figure 28 - Avg PCU for Sugar Beets at Sterling

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Task59_l.doc (updated January 11, 2008) 26 of 32