powerpoint presentation · comparison with previous droughts average annual drought period runoff...
Post on 27-Aug-2018
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2014 25 percent of average 1977 25 1988 29 1976 37 2007 39 2013 42 1963 45 1990 45 1994 52 2012 52 WY 2015 is looking like it will come in around 10-12% of average
Lowest Snowpacks for April 1
* From tree rings
18.6
8.7*
12.0 11.2
9.8
13.1 12.4
6.7
10.0 11.2
10.4
0
5
10
15
20
WYAverage
1578-1580 1918-1920 1924-1926 1929-1934 1947-1950 1959-1961 1976-1977 1987-1992 2007-2009 2012-2014
SACRAMENTO FOUR RIVER RUNOFF
COMPARISON WITH PREVIOUS DROUGHTS
Average Annual Drought Period Runoff in Million Acre-Feet
WY 2015 coming in at about 77% of average so far
* From tree rings
6.0
2.3*
4.3
3.5 3.3
4.0
2.7
1.5
2.7
3.7
2.5
0
2
4
6
WYAverage
1653-1655 1918-1920 1924-1926 1929-1934 1947-1950 1959-1961 1976-1977 1987-1992 2007-2009 2012-2014
SAN JOAQUIN FOUR RIVER RUNOFF
COMPARISON WITH PREVIOUS DROUGHTS Average Annual Drought Period Runoff in Million Acre-Feet
Water Year 2015 coming in at 40% of average
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