HomeMy WebLinkAboutSUS491APPENDIX - I
Refinement to Reservoi~and River
Temperature and lce Studies
For S ,~ulation Period
October 1976 to May 1977
Text Changes and
New Exhibits
G and N
For
Instream Ice Simulation Study by Harza-Ebasco tor the AlasKa Power
Authority.Transmitted to the Federal Energy Regulatory Commission
on November 2,1984.
42164312
850204
•
susI 'DlA HYffiOElECI1UC PRUJ Ecr
I N~;THEAM ICE S IMULATION SWOY
fI NAL REPORT,UC'ItJHE R 19l1 4
D:JCUMENT NO.1986
ERRATA
TEXT
a ) Sect ion 3.3,f irst paragraph,4th sentence should read,"The ma x imum
upstream e xtent o f t he ice f ro nt ra nges from River Mi le 126 (197 6-7 7
winter )t o River Mile 140 (1 971-72 wi nter )."
b)section 3.3,third paragraph should read,"The mildest simulated river
ice cond i t ions f or the 1996 energy demand occur f or the winter of 1976-
77 (Exhi bit G).Max Unum tota l ice thicknesses f or this s imulat ion range
f r om 1 f t . t o 6 ft.,o f which 1 f t .i s sol id ice.These thicknesses
exist downstream of River Mile 126 and are generally similar to those of
natural 1976-77 cond itions in the same reach .However,the maxUnum
with-project ri ver stages in this reach are 2 f t .to 7 ft.h igher than
natur al cond it ions due to the higher with-pro ject winter flews.MaxUnum
river stages for t he 1976-77 with-project simulation are 1 ft.to 8 ft.
lower t han those of the 1971-72 simulation."
c)sec tion 3.3,f ourth paragrap h,fou r th se ntence s ho uld read,"M a ximum
e xtent o f the i ce cove r with the warm releases is River Mile 126,versus
River Mile 140 with inflew-matching release temperatures."
0 )sect ion 3.5,f irst paragraph ,second sentence should read,"Results shew
t h"t the beg inning of the i ce front prog res sion at the Chul itna c on-
f luence ranges from early December to e ar ly January,approximately 0-2
weeks later than the c orrespondi ng Watana-only simulations,and 4-7
weeks l ater than natural conditons for th e same winters."
e)sect ion 3.5,first paragraph ,t h ird s entence shoul d read,"Maxi mum
upstream extent of the i ce front ranges from River Mile 123 to 137, and
i s 2-13 miles downstream of that w i~h Watana only and 199 6 energy
demand."
t)section 3.5,third paragraph,f ourth sentence should read,"M ax imum
river stages,where an ice cover exists,are 1 ft.to 6 ft.higher than
co rresponding natural cond itions."
g )Sect ion 4.0,i tem number one,first s entence should r ead,"Relative t o
natural c ondit ions ,in it ial progression of.the Middle Susitna ice front
at the Chul itna con fluence (River Mile ·98.6l is expected to be delayed
by 2 to 6 we eks with Wat ana operat ing alone,and 4 to 7 wee ks with
watana and DE!'7 il Canyon operating together."
TABIES
Replace Tables IV, V, VI,VII,VIII and I X with the correspond ing new :ab l es
attached.
EXHIBITS
Replace Exhibits G and N with the corresponding new Exhibits attached .
(Re ference Run .7696CNB replaces t7696CNA,and Reference Run .7602CNB re-
places t7602CNA).
-2-
SUSITNA HYDROElECTRIC PROJECT
MAXIMUM S IMULATED WINTER RIVER STAGES
TABLE IV
Slough Of Tlwoohold
SodoC,*,noI Rn Mile E••non
I
Whisk_,101.5 387
G..tIC••112 .0 U"nown
6A 1 12 .3 (Uplandl
6 114 .1 476
MSII 116.6 482
MS II 115 .9 417
Curry 120 .0 U'*nown-12J .~U"nown
IA_1211 .1 673
8AE..127 .1 682
9 129 .3 -9 u/l 130 .8 U""oown
4th Ju ly 131.8 U"nown
9A 133.7 llil
10 u/.134.3 lli7
11 d/.136 .3 UNlnown
11 138 .5 68 7
17 1 ~.,)U'*oown
20 140 .5 730
21 (A61 141.8 747
21 142.2 755
22 144 .8 788
NATURA L WATANAON LY WAr ANA AND DEVIL CANYON WAr ANA
CDNDITIUNS 1_2001 2002 2020 F ILLING
DEMAND DEMAND DEMAND DEMAND YR .l YR .2
'"...'"M N ...N lil ;t
N '"iii '"...'"iii '"'"~...'I''I'......'I'............'I'...lil iii..i '"'"~'"'"'"N 'I'......!!!......!!!~N N ~~~'"~......!......II:...!!!!!!~~~~~
~J86 ~~ImIllli1llliJlllQIlillJ IillJ ~lllil ~001 ~IillI IllQl 367 367
456 ~5 455 456 459 45 7 4llO 459 480 459 46\456 456 456 457 459 457 455 455
459 45 7 457 459 46 2 480 46 2 46 2 46 3 46 1 463 480 459 456 460 46\459 457 457
474 472 472 474 Iilll 4 75 lillllmllllil IillJ lilliI 4 75 47 4 4 75 4 75 Iilll 475 4 73 473
1i!l480~~~~~~~~~OO~~G.W ~~481 @]
465 482 486 486 ~~~[ill)§Q][ill)[ill)~~~~!ill]~46 5 486
522 520 523 520 •52 6 525 52 7 525 52 3 5 25 52 1 5 22 520 520 5 20 525 523 520 521
552 548 5.548 556 552 565 550 5 52 55 5 550 553 ~~~["545 -55 5 550 546 5 46
57 1 569 571 570 [illJlill!fffiI 572 572 lilll r;e--1illl1 568 568 568 lillI 572 568 "'0
~561 mJ~Iilll ~@l r@J ~-~1561 ~561 580 56 1 ~~-5110 ~
~80 3 ~I@ ItiWl 80 3 I£iiiUI 80 3 80 3 ~1 803 ~1601 801 80 2 ~603 802 603
622 8 16 820 6 21 ~.i,,,ezo I'",,,6 25 617 6 20 1616 616 6 16 6 21 16 17 6 16 616
6J2 626 629 630 635 I 628 i 6J \ 6 28 626 636 I 628 633 627 62 7 62 7 __d 626 625 628
~649 IlliI IillJ WW 1650 IiiiI 650 650 ~1650 ~1650 65 0 6 50 IillJ 6 50 650 650
~654 lilll @]"'l -,(!!j)r ese ~6 56 ~165S 655 65 5 WW 656 ~65 5
673 66 7 670 6 72 675 I 6671870 668 668 67 6 1 668 6 70 667 667 66 7 668 668 6 70 668
684 66 1 68 3 684 ~1 1lli4~ee3 68J l@ 683 _~68 2 682 682 684 684 682 68 2-
----717 I 715 715 7 15 7 15 72 7 715 714 714 7 11 1t 4 715 7 15 712 713
----_~729 729 729 729 IEIl I 729 726 728 728 726 729 729 72 7 729
----746 746 746 746 745 ~J 746
746 746 745 746 [ill)[ffij 745 745
----753 753 753 753 753 ~753 752 752 752 752 753 754 751 750
----\787 787 787 786 787 I ~~786 785 765 765 765 787 767 782 762
NO TES :<,U pst r-.n 1Iour.t.y o f Nl turll Simula1
1.0 Ind icllt..~iom wh ••mu,imum fi".It.equ'"Of ..~••known
sklugh t h reshold elevation .See Exhibits A -T for dUrih on of overtOPPing•.
2 ."CIM C"ro per.ling gu ide il I llUmed for w ith -prOJeC t ,imu"tton,_
3 .197 1·72 W ,j mu"tion "lI.Iml.Wlrm ,4°C reeervo ir r........All other with
pr oJ ec ~.imu l.hon,auum8 a n "in flow-m atc h ing"tem peu tur.po licy .
4 .UPl~r eam ••tent 0'.i mul.ted ice cow.progr...ton 'Of W.t.M hlli ng occu r,
ups treem of Ri".,Mile 144 .8 .
pat,
5 .All ftv •.,....In ....
6 .Win"Ilf temperl tuf.:
HJ11 72 cold
1916 71 very wer m
1961 8 2 avet"oe
198 283 w . rm
....'
TDLB V
SUSITH&BYDaD!LICDlC nOJ!CT
OCaJUENC!S illER!1f1'ft1-PIOJ!CT IlAXDmM alVEI STAGES
AI!BIGDll TIWI MTUUL CONDITIORS
ilatana Vatalla and
SIOUlh or Ii.,.I'Only DevU Canyon Vatana
Side Channel MU..Qp.n til1l 0p.ntinl FUl1nl
Vh1l1t.n 101.5 6/6 6/6 0/2
Ca.h Creelt 112.0 6/6 6/6 0/2
6A 112.3 6/6 5/6 0/2
8 114.1 6/6 6/6 1/2
MSII 115.5 6/6 6/6 0 /2
MSII 115.9 6/6 6/6 0/2
Curry 120.0 6 /6 2/6 0/2
Moo.e 123 .5 (,/6 4/6 0/2
8A Ve.t 126.1 5/6 3/6 0/2
8A Ea.t 127.1 4/6 1/6 0/2
9 129 .3 3/6 2/6 0/2
9 u/.130.6 3/6 0/6 0/2
4th July 131.8 3 /6 2/6 0/2
9A 133.7 3/6 1/6 0/2
10 u/.134.3 4/6 1/6 0/2
11 d/.135.3 2/6 .0 /6 0/2
11 136.5 4/6 2/6 0/2
Not ••:
1.For aza.pl.,4/6 ..an.that 4 of the 6 with-proj.ct .i~lation.
r ••ulted in.bi,her aazi8Ua rl.,.r ·.t.,.than the natur.l
condition.for corr••pondil1l winter••
2.·ca ••C·operaUq plda and -lnflov-aatcbil1l-
r •••r.olr 1'.1 ••••t"peratur•••re •••~d for with-project
~l"laUolla•
.......-..a.-oI --.....
I ,14.,
.111 ,......nll.1
"'-,..,
",a-'Ir .'
I ' •.J
'"' •.1
,,"",•.1
",...
SUSITNA HYDROELECTRIC PROJECT
EXPECTED PROJECT EFFECTS ON WINTER SLOUGH OVER TOPPING
WAlANA OlilL Y WAlANA AHO D EVIL CANYOlil WAl ANA
FILLING
1-2001 200J J020
DEM AND DEMAND D EMANO DlMAND YR .I YR .2.
•...~~~~Ijl ...Ijl ~~Ijl ~Ijl Ijl IJ~.,.~
§!~!..!~~!!~~~~~~~~~~
II II D D
II -X X X II II X
II X 0
II X II II II X X II X II II II II
II II II X X II
II 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0
II II II
TAB LE VI
-
L1l1END :
II ........_e ___
........-.._14 '1 ........o ........_ .--...-.--..-,......
NOTEt:
1.:-C-C'._..........._..-.........-",10M.
1 .1111-12".'."C __AII__p""
..--"--."--polley.3......T •_a:
1171-72 ...1eI
1111 ·71 -v _m
111 1·12 _...
l M2 ·1J ••m
TABLE VII
SUSITMA HYDaOELECUIC PROJECT
SIMDLAIED ICE FRONT PllOGKESSION
Starting Date
at Chu1itne Melt-Out
Confluence Date
Natural Conditions
1971-72
1976-77
1981-82
1982-83
Watana Only - 1996 Demand
1971-72
1976-77
1981-82
1982-83w1971-72
Watana Only,2001 Demand
1971-72
1982-83
Both Dams - 2002 Demand
1971-72
1976-77
1981-82
1982-83
Both Dams - 2020 Demand
1971-72
1982-83
WaUna Fil11ng
1982-83 (YR.l)
1981-82 (YR.2)
Nov. 5
Dec. 8
Nov. 18
Nov. 5
Nov. 28
Dec. 26
Dec. 28
Dec. 12
Dec. 17
Nov. 28
Dec. 19
Dec. 2
Jan.8
Dec. 30
Dec.22
Dec. 3
Dec.14
Dec.23
Dec.23
MaY-~~15B
May 10
EMay15
April 18
April 3
Mar. 20
Mar.27
EMay15
March 16
EMay3
April 14
Mar.12
Mar. 20
April 15
Mar.12
EMay2E
Ha)30
Haxi mum
Upstream
Extent
(Ri ve r Mile)
137 N
137 N
137 N
137 N
140
126
137
126
12"
142
124
137
124
124
123
133
126
Legend:B -Observed natural break-up.
E -Helt-out date is extrapolated from results when occurring beyond
April 30.
N -lee cover for natural conditions extends upstream of Gold Creek
(River Mile 137) by means of lateral ice bridging •
.1 - Computed ice front progression upstream of Gold Creek (River
Hile 137)is approxiaation only.Observations indicate closure
of river by lateral ice in this reach for natural conditions.
Notes:1.·Case C·operating guide i •••su-ed ·for with-project .iaulations.
2.1971-12W simulation as.umes 4°C reservoir releases.All .
other with-project simulations assume an "inflow-matching"
tem~rature policy.
3.Weather conditions:
1971-72:Cold winter
1976-77:Very warm winter
1981-82:Average winter
1982-83:Warm winter
SUSITNA HYDROELECTRIC PROJECT
TOTAL ICE THICKNESS
MAXIMUM SIMULATED VALUES
TABL E VIII
WATANA AND DEVIL CA N YON I WATANA FILLING
NATURAL
COND ITIONS
WA TANAONLY
1996
D EMAND
2001
D EMAND
2002
DEMAND
2020
D EMAND YR .1 YR .2
5 3 1 6
8 5 1 4
10 4 1 5
5 2 3 3
5 2 J 3
8 4 1 6
8 J 6 1
1 1 3 5
1 1 3 3
11 1 3 4
6 1 3 5
5 1 J 4
(Ups".....Bound_.
01
Natural Simulltioftl
1 4 1 8 8
1 58 5 J
9 58 24
5 2 J 1 I
:r-l :r:
51 11 2 1
1
5 I 2
81 I 1 I
1 I 2 1
:i i _~
2 I
J.~Upm.m htenl of
Ice Cow.P'09'nlion 1 I---.:...J
4
4
4
6
3
2
2
j
3
4
5
3
5
8
8
8
2
2
l;;
!
2
3
1
3
8
3
3
1
lil
!
2
J
5
3
3
5
4
5
M
'I'
!
1
4
4
4
5 J
4 2
7 2
J 1
:::
~
~
:r--
2 I
_lJ
lil lil
!!
2 2
2 3
3 4
J 3
3 4
2
J
2
4
~
~:e
~
5
5
5
4
4
4 8 4 8
4 1 1 1
'".,.
~
~
1 1 lJ:i--
:i
J I
:I
1 I
--'
lil
!
2
1
1
5
8
5
5
5
5
5
:::
~
~
5 •
5 1
8 2
5 r--
4 I
:I
I
;I
9 I
:I
:;i
4
3
8
8
I:::
~
~
3
5
lil
!
2
5
J
5
5
4
5
'"'I'
!
1
J
3
3
2
~
~:e
~
5
5
5
5
6
'".,.
~
~
4
5
5
lil
!
3
4
4
4
5
l;;
~
2
4
5
2
2
~
~:e
~
5
5
8
5
5
~
~
~
101.1
112.0
112.3
114 .1
115 .8
115 .1
120 .0
123.1
1211 .1
127 .1
129.3
130.1
131.1
133 .7
134.3
135 .3
138 .5
139 .3
140 .5
141.1
142.2
144.1
R_MIIo
Wh,*..
lOu/.
22
4'"July
IA
SlouIh or
SidoC_
11
20
211ASI
21
II u/.
11 d /.
11
lAW..
IAE..
I
GoohC ....
SA
S
MSII
MSII
Cuny-
NOTES '
1,"Case C"operating guid e is assumed lot w uh .pro iect ,lm ul.l ion,.
2 .19 71 72
w simu lati on .....mrs warm ,4"<:reservOI'rrleur •.
All e ther w ith ,nUIP.C1 simulat.uns assume an "inflow-ml lc hinq "I ~per ll ur e ,)Olley .
J Up slfeam u ten l 0 1 ,unu l.lp.'l!Ice c o ver ItfogresSIOft lor Walltna li lll,••occ urs
upsu earn 0 1 R iver Mil e 1448
4 All a th lCkn..in'eet .
5 W.nt ...IIr htmpefltuftJI:
1971 ·]2 co ld
197 617 "Iry w.m
198182 Iv.rly '
1:182·83 wlr m
SUSITNA HYDROELECTRIC PROJECT
SOLID ICE THICKNESS
MAXIMUM SIMULATED VALUES
TABLE IX
Clhntreem Bounder"
01
NaturI'Stmulattonl
5 2 4 3
5 24 3
5 2 4 3
5 2 3 3
5 2 3 3
5 2 3 3
5 2 3 3
5 1 3 3
5 1 3 2
5 1 3 2
4 1 3 2
4 1 3 2
NATURAL
CONDI TIONS
WATANA ONLY
J
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
N
'Il
!
o
o
o
o
o
~
~
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
YR .1 YR .2
~
~
4 1
4
4
3 0
2 0
1 0
:::
~
~
2020
D EMAND
:.
I
-~
~
~
22
2
2
2
1
1
N
'Il
!
,.
~
~
~
2002
D fMAND
5
5
5
5
4
4 1
~
~
N..,
WATAIiA AND DEVI L CANY ON I WA TANA F IL LI NG
4 1 1 0:~.~r -
3 I
3
2
2 I
:I
o I
I
_!U
~
~
2
1
1
1
1
4
I
3 I
3
3
5
5
5
5
5
5 0
5 0
4 0rr-r--:
N..,
~
'"
1001
DEMAND
2 I
~I
_0 ,
3
2
2
2
1
•:::
~
~
~
~
2
2
2
2
2
3 1
3
3
3
3
3
19
!
1_
DEMAND
~
~
~
~
5 1
Upnr.m Ex'..,'of
tee Coy.P,ogreuion
~
~
~
5
5
5
5
5
5 1 2 0 1
4 1 2 00
401 0 0
:r-l ;r:
:Ii:!
2 I I 0
;I I:I
1 1 ~
01
0 ,
~
~
3
3
3
3
3
4
4
4
4
4
19
!
2
2
2
2
2
~
~
~
~
5
5
5
5
5
N..,
;::
'"
101.5
1 12.0
112.3
1 14.1
1 15.5
115.'
120 .0
113 .5
nt.l
127 .1
111 .3
130 .8
13U
133 .7
lM.3
135 .3
1311 .5
139.3
140 .5
141.'
142.2
144 .'
R...Mllo
211A8)
2 1
22
8AW..
SlouIh or
Side Chan .....
Wh....
9 u/.
IA E."
Curry
Moo.
GothC,....
8A
8
MSII
MSII
4111 July
9A
10 u/.
11 d/.
11
17
;:0
•
NOTES ,
1 ."Ca se C "oper a ti ng guide.,a~m ..J tOf with PfCllt'C1 simu lal KlOs
2 .191'·12 w sim ulation clssumes war m ,411(:r~f VOll I f!h~..~.
All e t h er w it h pr oject 'I mulallons a ssome a n "in fkl w ma .c hing"t emp eeaun e p oll ey .
3 .Up str eam ulent o f sim ula l"l ice c n~'Jlrogfenion lor Waland l llllll(j occ urs
Ullstt ealTl0 1 Ai...e r MIle 144 .8 .
A ll tee th icko",In t H1
!)Wm ler I i,I rmpeu 1u rn
191172 col d
1976 ·77 very .Mm
198 1 8 2 a llerage
1982·8 3 wa rm
.'
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/
~v /-~/'§/-:/'/
/#~/v
/V /
102 10 3 104
RIVER MILE
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420 ITl<D
-1-a
410 z
39)
"ITl400rn
-i
433
HE
-440
101
A..A5KA POWER AUlI1CR ITT
38l
I
106 101 100
106
105
105104103102
101
101100
10099
99
330
I
98
98
390
38:)
3~
Z 360
a-.....
a
>w 350
-J
W
.....
W 370W
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12512..123
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RIVER MILE
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