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Ca lifo rnia Wa te r Co mmissio n Pa c he c o Re se rvo ir E xpa nsio n Uniq ue Oppo rtunity fo r F ishe rie s Re c o ve ry, F lo o d Risk Re duc tio n a nd E me rg e nc y Wa te r Supply De c e mb e r 13, 2017 PPWD 1 of 33 Pro je c

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SLIDE 1

Ca lifo rnia Wa te r Co mmissio n

Pa c he c o Re se rvo ir E xpa nsio n

Uniq ue Oppo rtunity fo r F ishe rie s Re c o ve ry, F lo o d Risk Re duc tio n a nd E me rg e nc y Wa te r Supply

De c e mb e r 13, 2017

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1

PPWD

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SLIDE 2

PPWD

Pac he c o Pass Wate r Distr ic t

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Pac he c o Cr e e k

Pro je c t Pa rtne rs

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SLIDE 3

PPWD

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Pac he c o E xpansio n E xisting Pac he c o Re se r vo ir

Pro je c t L

  • c a tio n
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SLIDE 4

PPWD

T he Pro je c t De live rs a Hig h Pe rc e nta g e o f Pub lic Be ne fits

E c osyste m Impr

  • ve me nt

$722M 50%

E me r ge nc y Re sponse

$455M 31%

Wate r Supply / Quality

$282M 19%

2.43

Public Be ne fit Ratio

81%

Public Be ne fits

4 of 33

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SLIDE 5

PPWD

T he Pa rtne rs Se e k to Addre ss F ive Big Cha lle ng e s

Impr

  • ve

Re silie nc y and E me r ge nc y Wate r Supply E liminate Wate r Quality Issue s in San L uis Re se r voir Re duc e F looding to Disadvantage d Communitie s

5

90% po pula tio n

de c line in Pa ja ro wa te rshe d fro m 1960s to 1990s

90% o f De lta

wa te rshe d we tla nds ha ve disa ppe a re d

66% c ha nc e o f De lta

e a rthq ua ke in ne xt 50 ye a rs; 45% o f wa te r supply impo rte d fro m De lta Wa te r q ua lity issue s during summe r mo nths in 57% o f ye a rs E xte nsive flo o ding e ve n fo r fre q ue nt/ sma ll e ve nts;

20- ye ar flo o d in 2017

(pic ture d)

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Impr

  • ve the

De lta Re stor e F e de r ally T hr e ate ne d F ish

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SLIDE 6

PPWD

T he Re se rvo ir E xpa nsio n will Pro vide Pub lic So lutio ns

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PPWD

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SLIDE 7

PPWD

E na b le s F e de ra lly T hre a te ne d Ste e lhe a d Re c o ve ry

T he pro je c t will impro ve c o nditio ns in wate rshe d c ritic al to re c o ve ry

  • I

mpro ve s wa te r flo w in Pa c he c o Cre e k in a ll hydro lo g ic c o nditio ns

  • L

a rg e r c o ld wa te r po o l impro ve s te mpe ra ture in Pa c he c o Cre e k

  • I

nc re a se s SCCC Ste e lhe a d c o ho rt sc o re b e twe e n 162% (2030) a nd 178% (2070)

  • E

na b le s g ro wth o f a n inde pe nde nt po pula tio n in the Pa ja ro Rive r wa te rshe d

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5 10 15 20 25 We t Ab o ve No rma l Be lo w No rma l Dry Critic a l Witho ut Pro je c t With Pro je c t

Co ho rt Sc o re

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SLIDE 8

PPWD

Dry Pa c he c o Cre e k - Aug ust 2014 1.3 c fs flo w - July 2016 Pa c he c o Cre e k will ha ve e nha nc e d flo w

8 of 33

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SLIDE 9

PPWD

E nha nc e s Ba y-De lta E c o syste m

I nc re ase d wate r supplie s to De lta wate rshe d re fug e s

  • De dic a te s irrig a tio n to we tla nds

in b e lo w-no rma l wa te r ye a rs

  • I

nc re a se s fo o d supply fo r mig ra ting Pa c ific F lywa y wa te rfo wl in the fa ll a nd winte r

9 of 33

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SLIDE 10

PPWD

10

"Ca lifo rnia 's la st re ma ining 5% o f we tla nd s a re fo und o n wildlife re fug e s in the Ce ntra l Va lle y a nd a re c ritic a l to the he a lth o f the millio ns o f mig ra to ry b irds using the pa c ific flywa y e a c h ye a r. T he Pa c he c o re se rvo ir e xpa nsio n pro je c t pro po se s to pro vide tho usa nds o f a c re fe e t to the se re fug e s in b e lo w no rma l wa te r ye a rs whe n wa te r supplie s so uth o f the de lta a re sc a rc e a nd hig hly e xpe nsive to he lp ma inta in tho usa nds o f a c re s o f this c ritic a l pub lic trust.”

Ric Orte g a ,

Gra ssla nd Wa te r a nd Re so urc e Co nse rva tio n Distric ts

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SLIDE 11

PPWD

Re duc e s F lo o ding in Disa dva nta g e d Co mmunitie s

T he pro je c t will pro te c t disadvantag e d and vulne rab le c o mmunitie s ag ainst flo o ding

  • De c re a se s flo o d flo ws fro m No rth F
  • rk

Pa c he c o Cre e k b y up to 61%

  • Re duc e s do wnstre a m 100-ye a r flo o d

flo ws b y up to 4,700 c fs

  • With the ne w re se rvo ir, 2017 flo o d

flo ws in No rth F

  • rk Pa c he c o Cre e k

wo uld ha ve b e e n fully c o nta ine d

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Pic ture d ab o ve : Ho lliste r 2014 flo o ding

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SLIDE 12

PPWD

E limina te s Sa n L uis L

  • w Po int Wa te r

Qua lity I ssue s

T he pro je c t re duc e s o pe ratio nal c o nstraints at San L uis Re se rvo ir

Pre ve nts 73 mo nths o f impa ire d wa te r q ua lity de live rie s (2030) a nd 109 mo nths (2070) b y:

  • De live ring CVP supplie s to the Pa c he c o

Re se rvo ir e a rlie r in the se a so n

  • Ca pturing Pa c he c o wa te rshe d supplie s in the

e xpa nde d re se rvo ir

  • Using the Pa c he c o Re se rvo ir a s a b le nding

so urc e whe n ne e de d. T hus, pro je c t o pe ra tio ns will a vo id spike s in ta ste a nd o do r me a suring 10 time s no rma l le ve ls, whic h c a use pro b le ms in to da y’ s do me stic supply

12

Alg ae Blo o m in San L uis Re se rvo ir

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SLIDE 13

PPWD

E me rg e nc y Wa te r Supply

T he pro je c t will pro vide de dic ate d e me rg e nc y wate r supply

  • I

nc re a se s e me rg e nc y wa te r supply in 2030 a nd 2070 b y 82,000 a nd 87,000 a c re -fe e t

  • I

nc re a se s lo c a l surfa c e sto ra g e c a pa c ity b y 90%

  • Mitig a te s risk o f De lta e xpo rt o uta g e s

a nd impo rte d wa te r c o nve ya nc e

  • uta g e s

13

De lta le ve e failure , Jo ne s T rac t

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SLIDE 14

PPWD

T he Pro je c t will E nha nc e Wa te r Supply fo r Ag ric ulture a nd M&I

T he pro je c t will re duc e dro ug ht risk to ag ric ultural and M&I wate r use rs

  • I

nc re a se s wa te r supply b y up to 20,000 a c re -fe e t in dry ye a rs

  • I

mpro ve s g ro undwa te r c o nditio ns to a g ric ultura l c usto me rs

  • Ma te ria lly c o ntrib ute s to susta ina b le

g ro undwa te r ma na g e me nt g o a ls in fo ur b a sins

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SLIDE 15

PPWD

T he E nviro nme nta l Be ne fits a re Co mpe lling

15 of 33

PPWD

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SLIDE 16

PPWD

Hig h Re la tive E nviro nme nta l Va lue -- Addre sse s 11 o f 16 E c o syste m Prio ritie s

16

✔

P 1

Pro vide c o ld wa te r a t time s a nd lo c a tio ns to inc re a se the surviva l o f sa lmo nid e g g s a nd fry.

✔

P 2

Pro vide flo ws to impro ve ha b ita t c o nditio ns fo r in-rive r re a ring a nd do wnstre a m mig ra tio n o f juve nile sa lmo nids.

✔

P 3

Ma inta in flo ws a nd a ppro pria te ra mping ra te s a t time s a nd lo c a tio ns tha t will minimize de wa te ring o f sa lmo nid re dds a nd pre ve nt stra nding o f juve nile sa lmo nids in side c ha nne l ha b ita t

✔

P 4 I

mpro ve e c o syste m wa te r q ua lity. Disso lve d

  • xyg e n, turb idity, c o lifo rm

✔

P 5

Pro vide flo ws tha t inc re a se disso lve d o xyg e n a nd lo we r wa te r te mpe ra ture s to suppo rt a na dro mo us fish pa ssa g e

✔

P 8

Ma inta in o r re sto re g ro undwa te r a nd surfa c e wa te r inte rc o nne c tio n to suppo rt instre a m b e ne fits a nd g ro undwa te r de pe nde nt e c o syste ms. 17 of 33

P 6

Inc re a se a ttra c tio n flo ws during upstre a m mig ra tio n to re duc e stra ying o f a na dro mo us spe c ie s into no n-na ta l trib uta rie s

P 7

Inc re a se De lta o utflo w to pro vide lo w sa linity ha b ita t fo r De lta sme lt, lo ng fin sme lt, a nd o the r e stua rine fishe s in the De lta , Suisun Ba y, a nd Suisun Ma rsh

P 10

E nha nc e the fre q ue nc y, ma g nitude , a nd dura tio n o f flo o dpla in inunda tio n to e nha nc e prima ry a nd se c o nda ry pro duc tivity a nd the g ro wth a nd surviva l o f fish

P 13

Re me dia te unsc re e ne d o r po o rly sc re e ne d dive rsio ns to re duc e e ntra inme nt o f fish

P 15

De ve lo p a nd imple me nt inva sive spe c ie s ma na g e me nt pla ns utilizing te c hniq ue s tha t a re suppo rte d b y b e st a va ila b le sc ie nc e to e nha nc e ha b ita t a nd inc re a se the surviva l o f na tive spe c ie s

✔

P 9

E nha nc e flo w re g ime s o r g ro undwa te r c o nditio ns to impro ve the q ua ntity a nd q ua lity o f ripa ria n a nd flo o dplain ha b ita ts fo r a q ua tic a nd te rre stria l spe c ie s.

✔

P 11

E nha nc e the te mpo ral a nd spa tia l distrib utio n a nd dive rsity o f ha b ita ts to suppo rt a ll life sta g e s o f fish a nd wildlife spe c ie s

✔

P 12

E nha nc e a c c e ss to fish spa wning , re a ring , a nd ho lding ha b ita t b y e liminating b a rrie rs to mig ra tio n

✔

P 14

Pro vide wa te r to e nha nc e se a so na l we tla nds, pe rma ne nt we tla nds, a nd ripa ria n ha b ita t fo r a q ua tic a nd te rre stria l spe c ie s o n Sta te a nd F e de ra l wildlife re fug e s a nd o n o the r pub lic a nd priva te la nds

✔

P 16

E nha nc e ha b ita t fo r na tive spe c ie s tha t ha ve c o mme rc ial, re c re a tio na l, sc ie ntific , o r e duc a tio na l use s

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SLIDE 17

PPWD

Hig h Re silie nc y – L

  • w Risk

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PPWD

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SLIDE 18

PPWD

Pro vide s Syste m Wide I nte g ra tio n

Re fuge de live r ie s Mo dify de live r y patte r n to avo id wate r quality issue s Pac he c o Cr e e k flo ws M&I and Ag wate r supply

De lta

E xpande d Pac he c o Re se rvo ir San L uis Re se rvo ir 18 of 32

Wate r supply fo r Ce ntr al Valle y Ag and L

  • s Ange le s

Ho w the Pro je c t will b e Ope rate d

PPWD

20 of 33

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SLIDE 19

PPWD Dr

  • ught

All Pub lic Be ne fits Ma inta ine d/ Inc re a se d

T he Pro je c t Pe rfo rms We ll in a n Unc e rta in F uture

Public Be ne fit Proje c t Be ne fits Pe rforma nc e Unde r Unc e rta inty Sc e na rios

E c osyste m Impr

  • ve me nt -

De lta Wate r she d

(a c re -fe e t)

Maintaine d in a ll

unc e rta inty sc e na rio s

E c osyste m Impr

  • ve me nt -

Pac he c o Cr e e k

(% inc re a se in Co ho rt Sc o re )

Maintaine d or impr

  • ve d in a ll

unc e rta inty sc e na rio s

E me r ge nc y Re sponse

(a c re -fe e t)

Impr

  • ve d in a ll

unc e rta inty sc e na rio s

Unc e r tainty Sc e nar ios

All Pub lic Be ne fits Ma inta ine d/ Inc re a se d

Public Be ne fit Proje c t Be ne fits Unde r Droug ht

E c osyste m Impr

  • ve me nt -

Pac he c o Cr e e k

(% inc re a se in Co ho rt Sc o re )

Signific antly impr

  • ve d

pe rfo rma nc e during dro ug ht

E me r ge nc y Re sponse

(a c re -fe e t)

Maintaine d during dro ug ht

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SLIDE 20

PPWD

Bro a d Sta te wide Suppo rt

Suppor te d by:

  • Busine ss
  • Ag ric ulture
  • Disa dva nta g e d c o mmunity

a dvo c a te s

  • L

a b o r g ro ups

  • Citie s/ Co untie s
  • Wa te r a g e nc ie s
  • E

le c te d o ffic ia ls

  • Na tura l re so urc e s g ro ups

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SLIDE 21

PPWD

Suc c e ssful I mple me nta tio n Builds o n T ra c k Re c o rd a nd F ina nc ia l Stre ng th

E stab lishe d Ope rato r: Santa Clara Valle y Wate r Distric t

  • 800 E

mplo ye e s

  • Ma na g e s 10 e xisting da ms/ re se rvo irs,

c o nstruc te d b e g inning in the 1930’ s

  • Pro vide s wa te r supply, flo o d pro te c tio n, a nd

ste wa rdship o f stre a ms

  • Se rve s 1.9 millio n pe o ple in Silic o n Va lle y
  • De mo nstra te s e xc e lle nt fina nc ia l ste wa rdship in

funding its c a pita l pro je c ts

  • DSOD le tte r re g a rding Pa c he c o : “We a re

ple a se d tha t SCVWD with its e xpe rtise a nd re so urc e s a re pursuing this E nla rg e me nt Pro je c t”

21

Pic ture d ab o ve : L e xing to n Re se rvo ir

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SLIDE 22

PPWD

Pro je c t Pa rtne rs ha ve T e c hnic a l a nd F ina nc ia l Ab ility to Me e t a ll WSI P Mile sto ne s

22

Nove mbe r 2021

Dra ft E I S/ E I R

Oc tobe r 2023

ROD/ NOD

Januar y 2024

F ina l Co mmissio n Co nside ra tio n Pe rmits

F e br uar y 2024

Co nstruc tio n Co ntra c t Awa rd

May 2024

Co nstruc tio n Mo b iliza tio n

L ate Spr ing 2025

Pub lic Be ne fits Be g in to Ac c rue

Se pte mbe r 2028

Sta rt o f Pro je c t Ope ra tio ns

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SLIDE 23

PPWD

Re c a p: T he Pro je c t will Ac hie ve F ive I mpo rta nt Pub lic Be ne fits

23

E nhanc e s ste e lhe ad habitat Pr

  • vide s

e me r ge nc y supply Re solve s wate r quality pr

  • ble m

Suppor ts disadvantage d c ommunitie s

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Supplie s De lta r e fuge s

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SLIDE 24

PPWD

  • E

xisting Da m/ Re se rvo ir

6,000 a c re -fo o t re se rvo ir 100-fo o t-ta ll e a rth e mb a nkme nt da m Co nc re te spillwa y

E xisting Pa c he c o Re se rvo ir F a c ilitie s

24 of 33

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SLIDE 25

PPWD

Pro po se d Pa c he c o Re se rvo ir F a c ilitie s

  • E

xpa nde d Da m/ Re se rvo ir

140,000 a c re -fo o t re se rvo ir Ne w 319-fo o t e a rth e mb a nkme nt da m Co nc re te spillwa y

  • Co nve ya nc e b e twe e n Pa c he c o

Co nduit a nd e xpa nde d re se rvo ir

1-Mile tunne l/ pipe line Pump sta tio n Se le c tive le ve l inle t/ o utle t struc ture within re se rvo ir

  • Ne w re g ula ting ta nk ne a r Sa n L

uis Re se rvo ir

25 of 33

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SLIDE 26

PPWD

Affe c te d Wa te r F a c ilitie s

E xisting Pac he c o Re se rvo ir and No rth F

  • rk

Dam San L uis Re se rvo ir and CVP San F e lipe Divisio n F ac ilitie s F e de ral/ State /L

  • c al

c o nve yanc e fac ilitie s to de live r re fug e supplie s

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PPWD

slide-27
SLIDE 27

PPWD F e de r al/ State / Re gional Ope r ational F le xibility

I mpro ve s F e de ra l, Sta te , a nd Re g io na l Ope ra tio na l F le xib ility

Combine d Pac he c o-San L uis Re se r voir s

  • Re duc e d o pe ra tio na l c o nstra ints

a nd inc re a se e ffe c tive sto ra g e

  • I

mpro ve d wa te r q ua lity

  • I

mpro ve d tra nsfe r a nd e xc ha ng e

  • ppo rtunitie s
  • Re duc e d De lta pumping during

c ritic a l b io lo g ic a l pe rio ds

  • I

nc re a se d fle xib ility fo r re fug e de live rie s

  • I

nc re a se d fle xib ility fo r Se mitro pic sto ra g e a nd c o nve ya nc e fa c ilitie s

  • I

nc re a se d e me rg e nc y supplie s fo r o the r re g io na l use rs (no n-pro je c t pa rtne rs)

27 of 33

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SLIDE 28

PPWD

Ne w F a c ilitie s will Re pla c e a Da ma g e d 78-ye a r-o ld I nfra struc ture

Witho ut re pairs satisfac to ry to DSOD, the re se rvo ir will b e draine d and do wnstre am fishe rie s will b e impac te d

Re pla c e me nt will:

  • Re duc e risks to huma n he a lth a nd sa fe ty

a nd impro ve fishe rie s ha b ita t

  • Ma inta in g ro undwa te r re c ha rg e b e ne fits

fo r Pa c he c o Pa ss Wa te r Distric t DSOD le tte r re g a rding Pa c he c o : “We a re ple a se d tha t SCVWD with its e xpe rtise a nd re so urc e s a re pursuing this E nla rg e me nt Pro je c t”

28

Damag e d Spillway o f E xisting Dam

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slide-29
SLIDE 29

PPWD

Re spe c ting Na tive Ame ric a n Re so urc e s

Ob je c tive : T

  • pre se rve and g uard the histo ry and

c ultural re so urc e s o f Califo rnia Native Ame ric an trib e s

  • Co o rdina ting with nine trib e s o n a T

rib a l Co nsulta tio n a nd Outre a c h Pla n

29 of 33

slide-30
SLIDE 30

PPWD Dr

  • ught

All Pub lic Be ne fits Ma inta ine d/ Inc re a se d

T he Pro je c t Pe rfo rms we ll in a n Unc e rta in F uture

Public Be ne fit Base Unc e r tainty Sc e nar ios Pr

  • je c t Be ne fits

Pe r for manc e Unde r Unc e r tainty Sc e nar ios

E c osyste m Impr

  • ve me nt -

De lta Wate r she d (a c re -fe e t)

2,000 2,000

Maintaine d in a ll

unc e rta inty sc e na rio s

E c osyste m Impr

  • ve me nt -

Pac he c o Cr e e k (% inc re a se in Co ho rt Sc o re )

178% 178% to 278%

Maintaine d or impr

  • ve d in

a ll unc e rta inty sc e na rio s

E me r ge nc y Re sponse (a c re -fe e t)

82,000 83,000 to 107,000

Impr

  • ve d in a ll

unc e rta inty sc e na rio s

Unc e r tainty Sc e nar ios

All Pub lic Be ne fits Ma inta ine d/ Inc re a se d

Public Be ne fit Base Dr

  • ught

Pe r iod Pr

  • je c t Be ne fits

Unde r Dr

  • ught

E c osyste m Impr

  • ve me nt -

Pac he c o Cr e e k (% inc re a se in Co ho rt Sc o re )

178% 586%

Signific antly impr

  • ve d

pe rfo rma nc e d uring d ro ug ht

E me r ge nc y Re sponse (a c re -fe e t)

82,000 61,000 to 111,000; a ve ra g e 81,000

Maintaine d

d uring d ro ug ht

30 of 33

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SLIDE 31

PPWD

T he Ca se fo r Pa c he c o Re se rvo ir E xpa nsio n

Pr

  • je c t Sc ope
  • F

unding a sk: $484.5 millio n

  • Re so lve s o r me a sura b ly c o ntrib ute s to

hig h-sta ke s c ha lle ng e s in Ba y-De lta wa te rshe d

  • Se rve s b o th urb a n a nd

rura l c o mmunitie s

Be ne fits

  • E

nha nc e s Ba y-De lta wa te rshe d e c o syste m, inc luding vita l re fug e s a nd we tla nds

  • E

na b le s fe de ra lly thre a te ne d spe c ie s re c o ve ry

  • I

nc re a se s e me rg e nc y wa te r supply to Silic o n Va lle y e c o no mic hub

  • Pro vide s c ritic a l flo o d c o ntro l b y re duc ing

Pa c he c o Re se rvo ir re le a se s

  • Bo o sts M&I

wa te r supply during dro ug ht pe rio ds

  • E

limina te s Sa n L uis lo w po int wa te r q ua lity issue s

  • Re pla c e s da ma g e d da m

with ne w fa c ilitie s

High Re silie nc y, L

  • w Risk
  • I

mpro ve s fe de ra l, sta te , a nd lo c a l o pe ra tio na l fle xib ility

  • All pub lic b e ne fits

ma inta ine d o r inc re a se d in the fa c e o f unc e rta inty

  • E

sta b lishe d pa rtne r a nd b ro a d suppo rt e nsure suc c e ssful imple me nta tio n

Ge tting Star te d

  • Po sitio ne d to me e t a ll

WSI P mile sto ne s

E nvir

  • nme ntal Value
  • Addre sse s 11 o f 16 Re la tive

E nviro nme nta l Va lue Prio ritie s

31 of 33