Update on Calculations of the AADF in 2014

Presented by: David Hoekema

Date: 7/14/2014

Swan Falls website update

http://www.idwr.idaho.gov/News/Issues/SwanFalls/AADF.htm

Monitoring Process

1) Calculation Platforms• MathCAD calculation (daily monitoring)

• R—daily check

• Excel—weekly update verified against R and MathCAD

2) Calculation Verification• Janak Timilsena & Kresta Davis-Butts (Idaho Power)

3) Weekly Forecast Meetings with Corbin Knowles and IPCo

Official Record—Posted Online

292929292929303030303030313131313131 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 52454.5

2454.6

2454.7

2454.8

2454.9

2455

2455.1

2455.2

Corrected Headwater Data Based on Outflow (May 29- June 4)

Raw CJ Strike HW Data Estimated (Outflow) HW Data

CJ

Str

ike

He

ad

wa

ter

Ele

va

tio

n [

ft]

May June

gage appears to stick

Official Record—Posted Online

Headwater Challenges

Headwater Challenges

2014-07-07 00:00:00.07/8/2014 2:00 7/9/2014 4:00 7/10/2014 6:00 7/11/2014 8:00 7/12/2014 10:00 7/13/2014 12:002454.70

2454.75

2454.80

2454.85

2454.90

2454.95

2455.00

2455.05

3000

5000

7000

9000

11000

13000

15000

17000

19000

21000

CJ Strike Headwater Data

CJ HW (IPCo) CJ HW (USGS) CJ Outlfow [cfs]

Ele

vati

on

[ft

]

CF

S

Switch between Flow Aug and IPCo Release

Flows past Milner were split on the 7th

• USBR needed 1797 cfs• Daily Average Flow was 3080 cfs• Flow Augmentation was 58% of the flow

AADFJune10th = AADFwithMilner (0.58) + AADFw/oMilner (0.42)

Switch between Flow Aug and IPCo Release

Flows past Milner were split on the 7th

• USBR needed 1797 cfs• Daily Average Flow was 3080 cfs• Flow Augmentation was 58% of the flow

AADFJune9th = AADFwithMilner (0.58) + AADFw/oMilner (0.42)

Switch between Flow Aug and IPCo Release

2-day lag from Milner to Murphy during drawdown

0 3 6 9 12151821 0 3 6 9 12151821 0 3 6 9 12151821 0 3 6 9 12151821 0 3 6 9 12151821 0 3 6 9 12151821 0 3 6 9 12151821 00

2000

4000

6000

8000

10000

12000

Milner Kimberely Bliss Outflow Murphy Gage

CF

S

Official Record—Posted Online

Official Record—Posted Online

Official Record—Posted Online

Hydrologic Conditions

1) Winter Reach Gains 300 cfs lower than last year

2) Summer Conditions• Cool weather has kept demand down• Flows are at minimum of record• Potatoes and Corn will be entering full demand period• Once we finish 2nd Hay cutting no more breaks in diversions

6/25

/201

2

7/13

/201

2

7/31

/201

2

8/18

/201

2

9/5/

2012

9/23

/201

2

10/1

1/20

12

10/2

9/20

12

11/1

6/20

12

12/4

/201

2

12/2

2/20

12

1/9/

2013

1/27

/201

3

2/14

/201

3

3/4/

2013

3/22

/201

3

4/9/

2013

4/27

/201

3

5/15

/201

3

6/2/

2013

6/20

/201

3270

280

290

300

310

320

330

340

350

Box Canyon Springs 2013 vs. 2014

2012

2013

CF

S

Hydrologic Conditions-King Hill

6/25

/201

2

7/7/

2012

7/19

/201

2

7/31

/201

2

8/12

/201

2

8/24

/201

2

9/5/

2012

9/17

/201

2

9/29

/201

2

10/1

1/20

12

10/2

3/20

12

11/4

/201

2

11/1

6/20

12

11/2

8/20

12

12/1

0/20

12

12/2

2/20

12

1/3/

2013

1/15

/201

3

1/27

/201

3

2/8/

2013

2/20

/201

3

3/4/

2013

3/16

/201

3

3/28

/201

3

4/9/

2013

4/21

/201

3

5/3/

2013

5/15

/201

3

5/27

/201

3

6/8/

2013

6/20

/201

35000

5500

6000

6500

7000

7500

8000

8500

Snake River at King Hill 2013 vs. 2014

2012-2013

2013-2014

CF

S