20
November 16, 2010 1 Operations Report April 19, 2016 1
November 16, 2010 1
Operations Report
April 19, 2016
1
November 16, 2010 22
Colorado RiverBasin –
Lower Basin wateravailability isdependent on UpperBasin snow and
precipitation
April 19, 2016 2
November 16, 2010 April 19, 2016 3
November 16, 2010 44
Upper Colorado River SystemWeekly Water Report for April
April 19, 2016 4
0%
25%
50%
75%
100%
125%
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
63%
85% 86%
106%103%
89%
113%106%
85%
118%
78% 78%
103%
72%
92%
November 16, 2010 55
Normal = 10.8575 MAF
1981 to 2010
78%
April 19, 2016 5
0%
50%
100%
150%
200%
%ofN
orm
al
Year
Lake Powell Annual Unregulated Inflow
% Normal
November 16, 2010
Total System ContentsIncludes Upper & Lower Colorado River Reservoirs*
April 19, 2016 6
November 16, 2010 77
Monthly Precipitation
April 19, 2016 7
November 16, 2010 88
Upper Colorado River Drainage Basin
Tea-Cup Diagram
as of 4/13/2016
April 19, 2016 8
November 16, 2010 99
Reservoir and System Capacity as of 4/13/16
April 19, 2016 9
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Fontenelle FlamingGorge
MorrowPoint
Blue Mesa Navajo Lake Powell UpperBasin Total
Lake Mead SystemTotal
43%
85%
96%
68%
86%
45%
53%
38%
48%
Pe
rce
nta
ge
Fu
ll
November 16, 2010 1010
Colorado River Water SupplyAs of April 13, 2015 & April 11, 2016
April 19, 2016 10
-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
Powell Mead
3,591
1,083
3,591
1,079
Ele
vatio
n(M
SL
)
4/13/2016 4/11/2016
-
5,000
10,000
15,000
20,000
25,000
30,000
Powell Mead System
10,902 10,230
28,642
10,940
9,935
28,642
Vo
lum
e(1
,00
0A
F)
4/13/2016 4/11/2016
November 16, 2010
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
Regulated Inflow 2676 730 615 622 636 420 465 449 464 543 539 1431 2570 1002 466 435 680 506 393 433 490 486 523
Average Inflow 3080 1557 613 475 547 543 434 405 421 663 985 2303 3080 1557 613 475 547 543 434 405 421 663 985
Releases 598 800 801 604 598 645 864 862 589 649 600 699 800 1048 799 714 600 577 857 857 700 694 664
0
500
1,000
1,500
2,000
2,500
3,000
3,500In
flo
w(1
00
0's
Ac
reF
ee
t)
Water Years 2014 to 2016
April 19, 2016 11
Lake Powell Actual vs. Average Inflow
11
WY2015WY2014 WY 2016
November 16, 2010 12
Lake Powell Inflow vs. ReleasesWater Years 2014 to 2016
April 19, 2016 12
-1,000
-500
0
500
1,000
1,500
2,000
2,500
3,000
1000's
Acre
Feet
Regulated Inflow Releases Difference
November 16, 2010
May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
Actual Inflow 506 610 855 913 744 665 820 931 935 678 706 626 725 816 1128 914 787 718 618 996 967 781 748 718
Average Inflow 916 101810761062 874 732 757 851 934 780 789 807 916 101810761062 874 732 757 851 934 780 789 807
Releases 1086 959 943 735 686 472 695 493 832 600 10341087 871 868 767 803 723 578 631 619 662 699 10251116
0
200
400
600
800
1,000
1,200
Infl
ow
(1000's
Acre
Feet)
Water Years 2014 to 2016Lake Mead Actual vs. Average Inflow
April 19, 2016 13
OY2015OY2014 OY 2016
November 16, 2010 14
Lake Mead Inflow vs. ReleasesWater Years 2014 to 2016
April 19, 2016 14
-800
-600
-400
-200
0
200
400
600
800
1,000
1,200
1,400
1000's
Acre
Feet
Actual Inflow Releases Difference
November 16, 2010 1515
Lake Mead Elevation
Forecast
April 19, 2016 15
900
950
1,000
1,050
1,100
1,150
1,200
1,250
March 2015 through March 2018
Elevation
30 Yr Avg (1981 - 2010)
Max. Elevation
Min. Elevation
Tier 1 Shortage Conditions
1,075
November 16, 2010 1616
Scheduled vs. Actual APA Capacity
April 19, 2016 16
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Sched 247 247 221 188 191 251 234 267 291 292 294 297
Actual 247 239 205 190 190 249
150
170
190
210
230
250
270
290
310-M
ega
wa
tts-
November 16, 2010
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
Suppl. 0 0 0 0 0 0 0 0 0 0 0 0 25 0 50 0 0 0 0 0 0 0 0
Hoover B 154 153 154 154 121 119 119 103 88 111 126 132 138 136 139 146 120 119 107 91 92 121 113
Hoover A 155 154 155 155 122 120 120 104 89 112 127 133 139 137 139 147 120 120 108 91 93 122 114
0
50
100
150
200
250
300
350
Meg
aw
att
s
17
APA Monthly Capacity ScheduledJune 2014 – April 2016
April 19, 2016 17
WY2014 WY 2015 WY 2016
November 16, 2010
APA Monthly Energy ScheduledJune 2014 – April 2016
April 19, 2016 18
WY2014 OY2015 WY 2016
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr
Suppl. 0 0 0 0 0 3 4 0 0 16 27 0 0 18 0 31 0 0 0 0 0 0 0
Hoover B 18 17 17 15 13 7 11 9 15 11 18 21 16 15 14 13 11 10 11 10 11 13 17
Hoover A 54 61 64 63 69 20 20 21 28 27 42 60 65 61 60 45 40 25 27 22 23 24 33
0
20
40
60
80
100
Meg
aw
att
Hours
November 16, 2010April 19, 2016 19
Actual
November 16, 2010 April 19, 2016
Questions or Comments?Call Linda Sullivan at:
602-368-4265
For a copy of this report, go to the Power Authority websiteat: http://www.powerauthority.org/
and click on downloads.
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