2. Bay Delta Conservation
Plan Briefing
October 5, 2013
2
Paul Helliker
Deputy Director
CA Department of Water Resources
3. Areas of California served
by water supplies from
the Delta.
Over 24 million people depend on
the Bay-Delta system for drinking
water (two-thirds of the State’s
population).
2.5 million acres irrigated at least in
part by water from the Delta,
supporting California’s $27 billion
agricultural industry.
Water Supplies
9. • Subsidence
• Earthquakes
• Climate Change
• Declining Species
• Regulatory Uncertainty
“64% chance of catastrophic failure
due to earthquake or storm in the
next 50 years.”
Delta Challenges
10. Over 100,000
Acres of Restored
and Protected
Habitat
Monitoring and
Adaptive
Management
50 Year
Ecosystem-
Based Plan
ESA-HCP
NCCPA-
NCCP
New North Delta
Conveyance
10
Bay Delta Conservation Plan
11. • Large Scale Restoration • Alternative Conveyance
11
BDCP Fundamental Components
12. Habitat Restoration
Water Facilities and
& Operations
Other Stressors
22 Conservation Measures
200 Biological Goals and Objectives for 56 species
11 of which are aquatic species
11
1
10
12
BDCP Conservation Strategy
13. • 65,000 acres of Restored Tidal Habitat
• 10,000 acres of Restored Floodplain
• 20 Levee Miles Restored Channel Margin
• Enhanced Floodplain Habitat in the Yolo
Bypass
• Thousands of acres of Restored and
Protected Riparian & Terrestrial Habitat
• More than 100,000 acres of Restored and Protected Habitat in the
Delta over 50 Years
• Up to 30,000 acres of restored habitat
in next 15 years
13
Habitat Restoration Goals
14. Gravity Flow
Benefits Include:
• Reduced
energy
consumption
and
greenhouse
gas emissions
• Installation of
fewer
transmission
lines
Preliminary Draft – Subject to Change
• Gravity flow
• Three proposed intakes and three
proposed pumping plants for a total of
9,000 cfs capacity
• Three state-of-the-art fish screens held
to performance standards to protect
passing fish
• Intermediate Forebay for temporarily
storing the water pumped from the
river
14
Current Proposal
Dual Conveyance with Pipeline/Tunnel
15. • Two tunnels to carry water
35 miles to the existing
pumping plants in the
south Delta, where it would
be moved into existing
aqueducts
• 840-acre forebay at Byron
Tract
• Total power requirement-
50 MW
• Continued use of South
Delta SWP/CVP facilities
Preliminary Draft – Subject to Change 15
Current Proposal continued
Dual Conveyance with Pipeline/Tunnel
16. • Reduce forebay from
750 to 40 acres
• Reduce tunnel shafts
from 7 to 5
• Move alignment east –
away from towns
• Reduce height of pump
buildings from 60 to 30
feet
New Alignment
Preliminary Draft – Subject to Change
17. 10/1/2013 DRAFT - Not for distribution
17
Shasta End of September Storage
18. 18
Evaluation
• 3,000 cfs tunnel option is covered in the BDCP EIR/S
• Economic calculations of the cost/benefit of the portfolio proposal addressed
in Chapter 9 of the BDCP and accompanying documents
• Other water use efficiency and supply alternatives (recycling, desalination)
are being facilitated in IRWM and regulatory programs
Problems
• Does not meet long-term needs/co-equal goals – reliability for all Delta
diversions
• Has negative cost/benefit ratio
• Does not address reverse flows and south Delta restrictions
• Reduces habitat restoration by 60%
• Cost estimates for local water supply offsets are significantly low
• Funding source for local water supply projects is not identified
Response to NRDC Proposal
19. Alternative Description Total Benefits and Costsa, b
Alternative
Facility
Size (cfs)
Deliveries
(MAF)
Total
Benefitsc Total Costsd
Net
Benefits
BDCP Proposed Action High-
Outflow 9,000 4.705 $18,011 $13,328 $4,684
BDCP Proposed Action Low-
Outflow e 9,000 5.591 $18,795 $13,343 $5,452
A: W Canal 15,000 cfs 15,000 5.009 $23,820 $10,789 $13,030
B: Tunnels 6,000 cfs 6,000 4.487 $14,967 $12,123 $2,844
C: Tunnels 15,000 cfs 15,000 5.009 $23,820 $15,381 $8,438
D: Tunnels 3,000 cfs 3,000 4.188 $8,918 $10,039 -$1,121
E: Isolated 15,000 cfs 15,000 3.399 -$7,531 $15,436 -$22,967
F: Through Delta N/A 4.172 $9,301 $4,887 $4,415
G: Less Tidal Restoration 9,000 4.705 $18,011 $13,146 $4,865
H: More Restoration 9,000 4.705 $18,011 $13,219 $4,792
I: More Spring Outflow 9,000 4.338 $13,508 $13,182 $326
Notes:
a Construction is assumed to begin in 2015. BDCP operations are assumed to begin in 2025.
b All values are in 2012 $ (millions), and are discounted to present value using 3% real discount rate.
c Benefits are calculated out to year 2075.
d Costs are calculated out to year 2075.
e Benefits for the BDCP Proposed Action Low-Outflow Scenario are calculated relative to the Existing Conveyance Low-Outflow
Scenario, which assumes Scenario 6 operations, no Fall X2, no north Delta diversions.
cfs = cubic feet per second; MAF = million acre-feet
Present Value Benefits and Costs ($ millions)
20. 60
Hetch Hetchy Seismic upgrade: $4.5 billion
This retrofit includes replacing pipes over SF Bay with a tunnel, a new dam
and upgrade of water treatment facilities.
Source: Mountain Cascade Inc.
Photo: abc News
21. Project Cost Population
Served
Per capita
cost
MWD Diamond Valley Lake / Inland Feeder $3,100,000,000 18,000,000 $172
EBMUD $517,000,000 1,300,000 $398
SDCWA Emergency Storage Project $1,500,000,000 2,800,000 $536
BDCP 14,700,000,000 25,000,000 $588
CCWD Los Vaqueros Project $570,000,000 550,000 $1,036
SWP Coastal Aqueduct and CCWA Project $575,000,000 430,000 $1,337
SFPUC’s Hetch Hetchy Project $4,600,000,000 2,500,000 $1,840
Water Investment Projects
22. 22
Water Action Plan
• Brown Administration’s Action Plan
for Next Five Years
• Addresses Storage,
Conservation/Local Projects,
Transfers, Flood Management,
Water Quality, Etc.
• Complements Delta Conveyance
and Ecosystem Restoration
