WSP05071

• File Number: 8146.400
• Description: Pueblo Dam - Reports
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 10/1/1994
• Author: US Geological Survey
• Title: Use of Frequency Analysis and the Extended Streamflow Prediction Procedure to Estimate Evacuation Dates for the Joint-Use Pool of Pueblo Reservoir Colorado
• Water Supply Pro - Doc Type: Report/Study

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Station 07097000 Ar1<ansas River near Pueblo (1895-1990. N = 79)

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1,000

Station 07099400 Arkansas River near Avondale (1940-90. N 1:1 38)

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10
0.9950.99 0.98 0.95 0.9

0.8 0.7 0.6 0.5 0.4 0.3 0.2

0.1 0.05 0.02 0.Q1 0.005

PROBABILITY THAT APRIL-MAY DISCHARGE VOLUME
WILL BE EXCEEDED IN ANY YEAR

Figure 9. Log-Pearson type-III frequency curves of April-May discharge volume for selected stations
on the Arkansas River--Continued.

FREQUENCY ANALYSIS OF HISTORICAL DAILY MEAN DtSCHARGES 17