Urban Water Institute Annual Water Conference

August 27, 2015

SITES RESERVOIR PROJECT

www.sitesjpa.net

Partners -Sites Joint Powers Authority Members

• Glenn County• Colusa County• Glenn-Colusa Irrigation District• Tehama Colusa Canal Authority• Reclamation District 108• Maxwell Irrigation District• Yolo County Flood Control and Water Conservation

District• Colusa County Water District• Westside Water District• Orland Artois Water District• Proberta Water District• DWR – non voting member

Project Location

Location and Features

Storage capacity:

1.3 to 1.8 M acre-ft .

2015 Aug Draft

Flyover

2015 Aug Draft

Alternatives

2015 Aug Draft

Annualized Yield (Thousand acre-ft.)

Reservoir Size: 1.8 MAF 1.3 MAFYear Type: Average Dry/Crit ical AverageDry/Crit ical

Fil l ing: 510 320 420 260

Releases*: 480 580 400 440

* Resul ts do not inc lude operat ion of the CA WaterFix (aka in-Del ta conveyance) , which, depending on addi t ional spr ing outfl ow, reduces overa l l water supply avai lable for Ag & M&I.

2015 Aug Draft

Costs/acre-ft. (with financing)

2015 Aug Draft

Annualized Water Benefits(Thousand acre-ft.)

Reservoir Size: 1.8 MAF 1.3 MAFYear Type: Average Dry/Crit ical AverageDry/Crit ical

Fil l ing: 510 320 420 260

Releases*: 480 580 400 440

Ag & M&I: 230 340 175 280

Carriage Loss: 35 50 30 40

PublicBenefi t: 215 190 195

120* Re s u l t s d o n o t i n c l u d e o p e r a t i o n o f t h e C A Wa t e r Fi x ( a ka i n - D e l t a c o n v e y a n c e ) , w h i c h , d e p e n d i n g o n a d d i t i o n a l s p r i n g o u t fl o w , re d u c e s o v e r a l l w a t e r s u p p l y a v a i l a b l e f o r A g & M & I .

N O T E : C a r r i a g e l o s s i s t h e c o n t r i b u t i o n t o i n - D e l t a w a t e r q u a l i t y ( a ka ‘ s a l t c o s t ’ ) , w h i c h i s e s t i m a t e d .

2015 Aug Draft

Public Benefits ($ million/year)

Alt. C Alt. D Alt. E Alt. E (Max Bond)$0.00

$50.00

$100.00

$150.00

$200.00

$250.00

$187.70 $181.40$199.00

$162.80

$31.90$29.10

$31.90

$31.90

$30.10$23.50

$27.00

$27.00

$0.20

$0.20

$0.20

$0.20

Flood Damage Reduction

Recreation

Emergency Operations

Cold Water Pool

Ecosystem Enhance& Water Quality

Annu

al P

ublic

Ben

efit (

$mill

ion/

yr)

2015 Aug Draft

Public Benefi ts, Ecosystem (DFW Priorities)1. Nat ive Fish: Promote recovery of

threatened & endangered plus at r isk species

2. Restore physica l processes & fl ow regimes to improve habi tats & natura l communit ies

3. Enhance Recreat ion

4. Reduce adverse eff ects of non-nat ive species

5. Reduce in-r iver structures’ impact on anadromous species

6. Increase aquat ic & r ipar ian habitat & wet lands (managed & unmanaged)

Timing of re leases & Shasta Cold water pool

Releases can match t ime of year ‘needs’

Inc luded

? Further evaluat ion is needed

Exist ing intakes are compl iant . New intake/out let wi l l be designed to current standards

Managed seasonal wet lands, inc luding refuges

Self-Assessment

2015 Aug Draft

Public Benefi ts, Water Quality (SWRCB Priorities)1. For water bodies l i s ted as impaired

by CWA §303(d) ,

a. Improve water temperature

b. Improve dissolved oxygen

c. Improve nutr ient condi t ions

d. Reduce eff ects of mercury

e. Reduce sa l in i ty

2. Protect &/or c leanup groundwater deemed high or medium per CASGEM

3. Achieve Del ta t r ibutary fl ows that resemble natura l hydrograph patterns for aquat ic species

4. Develop loca l water suppl ies to reduce water demand on the Del ta watershed

Shasta CW Pool

? Locat ion dependent

? Potent ia l ly

? F low vs. new habi tat

Emergency response

? In l ieu of groundwater pumping in S. of Del ta

? Basel ine dependent

Sac. va l ley interest in project a l lows stored water to be used in l ieu of d ivers ions dur ing cr i t ica l t imes

Self-Assessment

2015 Aug Draft

Other Societal Benefi ts (not eligible for Prop 1 funding)1. Pumped-storage capabi l i ty to capture

surplus renewable energy (dayt ime) & contr ibute to demand dur ing off -peak (n ight) & shoulder loading t ime per iods (dawn & dusk) , which a l igns with the governor ’s goal to ‘decarbonize’ the state.

2. Contr ibutes to the loca l & regional economy

3. Contr ibutes to stabi l i z ing loca l groundwater levels

4. Addi t ional source for t ransfer water( s o m e o f w h i c h c o u l d b e u s e d t o s u p p l y d i s a d v a n t a g e d c o m m u n i t i e s i n t h e S a n J o a q u i n v a l l e y )

Alternat ives A thru C

Anci l lary serv ices created by recreat ion, addi t ional jobs (construct ion & O&M), & spending on maintenance.

Local use of stored water in l ieu of groundwater pumping

Al l a l ternat ives

Self-Assessment

2015 Aug Draft

Operations (with Existing System)

2015 Aug Draft

Increases annual carryover storage * (Thousand acre-ft.)

Reservoir Size: 1.8 MAF 1.3 MAFYear Type: Average Dry/Crit ical AverageDry/Crit ical

End Sept: 1,210 890 790 550

* Increase in the end of September storage in Trinity, Shasta, Folsom, Orovil le, & Sites reservoirs

2015 Aug Draft

“Mutual Aide” to Folsom:

Proximity to Delta allows Sites to release fl ows in response to in-Delta water quality concerns in l ieu of the CVP & SWP dependence on relying solely on releases from Folsom.

Integrated Operations:

Operating Sites in conjunction with CVP & SWP to better optimize available water for both water supply and public benefi ts.

2015 Aug Draft

Project Summary DWR/USBR Alternative C

• 1.8 MAF• 500 TAF/Year yield• 1.2 MAF of increased upstream storage• Benefits - Water Supply-50%, Ecosystem-

50%, Power, Recreation• $3.5-4.5 B Construction Cost• 10 Year Planning &Construction• $550 - $700/AF• www.sitesjpa.net