idaho water supply committee meeting southwest idaho report april 11, 2014
TRANSCRIPT
Idaho Water Supply Committee Meeting
Southwest Idaho Report
April 11, 2014
Boise River Diversion Dam, April 11, 1909
63% of Boise System Capacity
76% of Payette System Capacity
Payette BasinBlack Canyon Dam, 1924
Payette River Runoff at Horseshoe Bend April 1 – July 31
30-yr Avg.
2009 2004 2002 2013 4/1/14 forecast
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
1,617,000
1,491,000
1,208,000
1,343,000
940,000
1,471,000
Ac
re-F
ee
t
`91% of Avg.
92% of Avg.
58% of Avg.
30-yr Avg.
2002 2004 2009 2013 4/1/14 forecast
0
100,000
200,000
300,000
400,000
500,000
481,000
446,000
457,000
469,000
349,000
460,000
Ac
re-F
ee
tCascade Reservoir Inflows
April 1 – July 31
95% of Avg.
92% of Avg.
73% of Avg.
30-yr Avg.
2002 2009 2010 2013 4/1/14 forecast
0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
123,500
103,000
121,000117,000
88,000
114,000
Ac
re-F
ee
tDeadwood Reservoir Inflows
April 1 – July 31
92% of Avg.
98% of Avg.
Boise River Basin
Boise Basin RunoffApril 1 – July 31
30-yr Avg. 2008 2009 2013 4/1/14 forecast
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,261,0001,290,000
1,226,000
628,000
1,225,000
Ac
re-F
ee
t
97% of Avg.
102% of Avg.
S. Fork Boise (Anderson Ranch) RunoffMarch 1 – July 30
30-yr Avg. 2009 2008 2013 4/1/14 forecast
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
500,000
477,000464,000
440,000
242,000
445,000
Acr
e-F
eet
93% of Avg.
51% of Avg.
Owyhee Basin
Owyhee Reservoir near Leslie Gulch - 3/23/14
29% of normal runoff
18% of normal runoff
Owyhee Basin RunoffApril 1 – June 30
30-yr Avg. 1977 1992 2012 2013 4/1/14 forecast
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
353,000
68,00036,000 100,000
67,000 58,000
Acr
e-F
eet
10% of Avg.16% of Avg.
Owyhee Basin RunoffJanuary 1 – June 30
30-yr Avg. 1977 1992 2012 2013 4/1/14 forecast
0
100,000
200,000
300,000
400,000
500,000
600,000
700,000
653,000
124,000 113,000
240,000185,000 170,840
Acr
e-F
eet
17% of Avg.
26% of Avg.
Owyhee Reservoir in wetter times