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WY 2015 – El Niño to the Rescue?
Urban Water InstituteAugust 13, 2014
Talk Overview
• Current Drought Conditions
• El Niño and Northern California Outcomes
20
40
60
80
100
120
1401-
Jan
1-Fe
b
1-M
ar
1-A
pr
1-M
ay
1-Ju
n
1-Ju
l
1-A
ug
1-Se
p
1-O
ct
1-N
ov
1-D
ec
California Reservoir Storage, Percent of Normal, 1977 and 2010-14
Source: California Department of Water Resources
2011
20102012
2013
1977
2014
50 51 52 53 54 55 56 570
1020304050607080
2013
Annual Mean Temperature (degrees F)
Annu
al P
reci
pita
tion
(inch
es)
NOAA Climate Division 2 Calendar Year Data1895-2013
1976
1950 1960 1970 1980 1990 2000 201048
49
50
51
52
53
54
55
8 Station Index Water Year Totals
Strong El Nino Moderate El Nino Weak El NinoEl Nino Average Period of Record Average
Drought Busting3
Holding Steady/Some Improvement10
Drought Continuing9
Prec
ipita
tion
in in
ches
Water Year (Oct 1 – Sep 30)
1950 1960 1970 1980 1990 2000 2010 38
39
40
41
42
43
Strong El Ninos Moderate El Ninos Weak El NinosEl Nino Average Period of Record Average
San Joaquin 5 Station Index Precipitation Water Year Totals for El Nino Years
Drought Busting5
Holding Steady/Some Improvement4
Drought Continuing13Prec
ipita
tion
in in
ches
Water Year (Oct 1 – Sep 30)
