WMOD00063

• Applicant: Steven M. Hunter
• Sponsor Name: California Energy Commission
• Project Name: Optimizing Cloud Seeding for Water and Energy in California
• Title: Optimizing Cloud Seeding for Water and Energy in California
• Prepared For: California Energy Commission
• Prepared By: Steven M. Hunter
• Date: 3/31/2006
• State: CA
• Country: United States
• Weather Modification - Doc Type: Report

water year. The effect of seeding III (%) = IOO*(RRA-I), where RRA IS the bias-adjusted
Regression Ratio

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1955

Kaweah River (KWT)

Kern River (KR1)

~

Kings River (KGF)

_Eastern Shma (OWL) _

1965

1975

1985

1995

2005

Water Year

Fig 3b. Same as Fig 3a except for the Kings River (KGF), Kcrn River (KRI). Kawcah River
(KWT), and Eastern Sierra (OWL) operational seeding programs.

Table ./. Results of the evaluation of the operational seeding programs after v,.'atcr year 1990,
Results arc given for the proportional elTcct of seeding, 0(%) = 100*(RR,,-I), where RR,\ is the
bias-adjustcd Regression Ratio. Po is the probability (%) that 0 ?: 0%, and PI is the probability
(%) that o;?: 1% (the hypothetical threshold of cost effectiveness).
Operational Seeding Program
Lake Uppcr Mokelumne Eastern Kings Kaweah Kern
Almanor American River Sierra River River River
FPR SCU ~IMF OWL KGF K\\'T KRI
37 22 37 13 36 15 13
195~-90 1969-90 1954-90 1978-90 1955-90 1976-90 1978-90
+10.7 +10,1 +1~.1 +10.7 +5.2 +10.2 +12.5

Statistical Result
No Years Seeded
Evaluation Period
0(%)
90% Conf Interval
lB(%)
UB(%)
0% ~ 0:;; VB (%)
Confidence (%)
U8(%)
Po
P,

+2.6 +<l.5 +4,7 +~.6 -1.2 +0.3 -1.1
+19.5 +20,7 +24.3 +17.1 +12.1 +21.0 +28.1
97.0 91.8 98.8 99.7 81.5 91.3 86,2
+22.6 +21.2 +30.2 +22.5 +10,7 +21.4 +26.7
98.5 95.9 99.4 99.8 90.8 95.6 93.1
97.6 93,8 99.0 99.6 85,3 93.6 91.7

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