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 t Pa rtne rs Pac he c o Cr e e k Pac he c o Pass Wate r Distr ic t PPWD 2 of 33
Pro je c t L o c a tio n Pac he c o E xpansio n E xisting Pac he c o Re se r vo ir 3 of 33 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 81% E me r ge nc y Re sponse $455M E c osyste m 31% Impr ove me nt Public Be ne fits $722M 50% Wate r Supply / Quality 2.43 $282M 19% Public Be ne fit Ratio PPWD 4 of 33
T he Pa rtne rs Se e k to Addre ss F ive Big Cha lle ng e s Re stor e F e de r ally Impr ove the Impr ove E liminate Re duc e T hr e ate ne d F ish De lta Re silie nc y and Wate r Quality F looding to E me r ge nc y Issue s in San L uis Disadvantage d Wate r Supply Re se r voir Communitie s 90% po pula tio n 90% o f De lta 66% c ha nc e o f De lta Wa te r q ua lity issue s E xte nsive flo o ding de c line in Pa ja ro wa te rshe d we tla nds e a rthq ua ke in ne xt 50 during summe r e ve n fo r fre q ue nt/ wa te rshe d fro m ha ve disa ppe a re d ye a rs; 45% o f wa te r supply mo nths in 57% o f sma ll e ve nts; 1960s to 1990s impo rte d fro m De lta ye a rs flo o d in 2017 20- ye ar (pic ture d) PPWD 5 of 33
T he Re se rvo ir E xpa nsio n will Pro vide Pub lic So lutio ns PPWD PPWD 6 of 33
E na b le s F e de ra lly 25 T hre a te ne d Ste e lhe a d Re c o ve ry 20 Co ho rt Sc o re 15 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 10 • 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 5 • 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 0 • I nc re a se s SCCC Ste e lhe a d c o ho rt sc o re We t Ab o ve Be lo w Dry Critic a l b e twe e n 162% (2030) a nd 178% (2070) No rma l No rma l Witho ut Pro je c t With Pro je c t • 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 PPWD 7 of 33
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 PPWD 8 of 33
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 PPWD 9 of 33
"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 PPWD 10 of 33
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 o 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 o rk Pa c he c o Cre e k wo uld ha ve b e e n fully c o nta ine d Pic ture d ab o ve : Ho lliste r 2014 flo o ding PPWD 11 of 33
E limina te s Sa n L uis L o w Po int Wa te r Qua lity I ssue s Alg ae Blo o m in San L uis T he pro je c t re duc e s o pe ratio nal Re se rvo ir 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 PPWD 12 of 33
E me rg e nc y De lta le ve e Wa te r Supply failure , Jo ne s T rac t 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 o uta g e s PPWD 13 of 33
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 PPWD 14 of 33
T he E nviro nme nta l Be ne fits a re Co mpe lling PPWD PPWD 15 of 33
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 Pro vide c o ld wa te r a t time s a nd lo c a tio ns E nha nc e flo w re g ime s o r g ro undwa te r ✔ P 1 to inc re a se the surviva l o f sa lmo nid Inc re a se a ttra c tio n flo ws during upstre a m c o nditio ns to impro ve the q ua ntity a nd ✔ e g g s a nd fry. P 6 mig ra tio n to re duc e stra ying o f a na dro mo us P 9 q ua lity o f ripa ria n a nd flo o dplain spe c ie s into no n-na ta l trib uta rie s ha b ita ts fo r a q ua tic a nd te rre stria l spe c ie s. Pro vide flo ws to impro ve ha b ita t c o nditio ns fo r ✔ P 2 in-rive r re a ring a nd do wnstre a m mig ra tio n o f juve nile sa lmo nids. E nha nc e the te mpo ral a nd spa tia l 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 distrib utio n a nd dive rsity o f ha b ita ts to P 7 P 11 e stua rine fishe s in the De lta , Suisun Ba y, a nd Ma inta in flo ws a nd a ppro pria te ra mping ra te s suppo rt a ll life sta g e s o f fish a nd wildlife Suisun Ma rsh a t time s a nd lo c a tio ns tha t will minimize spe c ie s ✔ P 3 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 E nha nc e a c c e ss to fish spa wning , ✔ ha b ita t E nha nc e the fre q ue nc y, ma g nitude , a nd P 12 re a ring , a nd ho lding ha b ita t b y dura tio n o f flo o dpla in inunda tio n to e nha nc e e liminating b a rrie rs to mig ra tio n P 10 prima ry a nd se c o nda ry pro duc tivity a nd the ✔ P 4 I mpro ve e c o syste m wa te r q ua lity. Disso lve d g ro wth a nd surviva l o f fish o xyg e n, turb idity, c o lifo rm 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 Re me dia te unsc re e ne d o r po o rly sc re e ne d P 14 Pro vide flo ws tha t inc re a se disso lve d o xyg e n P 13 ✔ te rre stria l spe c ie s o n Sta te a nd F e de ra l dive rsio ns to re duc e e ntra inme nt o f fish P 5 a nd lo we r wa te r te mpe ra ture s to suppo rt wildlife re fug e s a nd o n o the r pub lic a na dro mo us fish pa ssa g e a nd priva te la nds De ve lo p a nd imple me nt inva sive spe c ie s ✔ Ma inta in o r re sto re g ro undwa te r a nd surfa c e ma na g e me nt pla ns utilizing te c hniq ue s tha t E nha nc e ha b ita t fo r na tive spe c ie s tha t P 15 wa te r inte rc o nne c tio n to suppo rt instre a m a re suppo rte d b y b e st a va ila b le sc ie nc e to ✔ P 8 e nha nc e ha b ita t a nd inc re a se the surviva l o f P 16 ha ve c o mme rc ial, re c re a tio na l, b e ne fits a nd g ro undwa te r de pe nde nt na tive spe c ie s e c o syste ms. sc ie ntific , o r e duc a tio na l use s PPWD 16 17 of 33 of 32
Hig h Re silie nc y – L o w Risk PPWD PPWD 17 of 33
De lta Pro vide s Syste m Wide I nte g ra tio n Ho w the Pro je c t will E xpande d Pac he c o b e Ope rate d Re se rvo ir San L uis Re se rvo ir M&I and Ag Re fuge wate r supply de live r ie s Mo dify de live r y patte r n to avo id wate r quality Pac he c o issue s Cr e e k flo ws Wate r supply fo r Ce ntr al Valle y Ag and L o s Ange le s PPWD PPWD 18 of 32 20 of 33
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