The Bay Delta
The Heart of California’s Water System
Bay Delta Conservation
Plan Briefing
October 5, 2013
2
Paul Helliker
Deputy Director
CA Department of Water Resources
Areas of California served
by water supplies from
the Delta.
Over 24 million people depend on
the Bay-Delta system for dri...
DWR, 2010
California Snowpack Predictions
- 20 ft.
- 5 ft.
- 15 ft.
- 25 ft.
Below Sea Level
-30 -20 -10 -5 ft
Delta Islands Below Sea Level
Data from DFG GrandTab 2012 Report
Data from DFG GrandTab 2012 Report
Source: DFW
• Subsidence
• Earthquakes
• Climate Change
• Declining Species
• Regulatory Uncertainty
“64% chance of catastrophic failu...
Over 100,000
Acres of Restored
and Protected
Habitat
Monitoring and
Adaptive
Management
50 Year
Ecosystem-
Based Plan
ESA-...
• Large Scale Restoration • Alternative Conveyance
11
BDCP Fundamental Components
Habitat Restoration
Water Facilities and
& Operations
Other Stressors
22 Conservation Measures
200 Biological Goals and Ob...
• 65,000 acres of Restored Tidal Habitat
• 10,000 acres of Restored Floodplain
• 20 Levee Miles Restored Channel Margin
• ...
Gravity Flow
Benefits Include:
• Reduced
energy
consumption
and
greenhouse
gas emissions
• Installation of
fewer
transmiss...
• Two tunnels to carry water
35 miles to the existing
pumping plants in the
south Delta, where it would
be moved into exis...
• Reduce forebay from
750 to 40 acres
• Reduce tunnel shafts
from 7 to 5
• Move alignment east –
away from towns
• Reduce ...
10/1/2013 DRAFT - Not for distribution
17
Shasta End of September Storage
18
Evaluation
• 3,000 cfs tunnel option is covered in the BDCP EIR/S
• Economic calculations of the cost/benefit of the po...
Alternative Description Total Benefits and Costsa, b
Alternative
Facility
Size (cfs)
Deliveries
(MAF)
Total
Benefitsc Tota...
60
Hetch Hetchy Seismic upgrade: $4.5 billion
This retrofit includes replacing pipes over SF Bay with a tunnel, a new dam
...
Project Cost Population
Served
Per capita
cost
MWD Diamond Valley Lake / Inland Feeder $3,100,000,000 18,000,000 $172
EBMU...
22
Water Action Plan
• Brown Administration’s Action Plan
for Next Five Years
• Addresses Storage,
Conservation/Local Proj...
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Paul Helliker - BDCP

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Paul Helliker - BDCP

  1. 1. The Bay Delta The Heart of California’s Water System
  2. 2. Bay Delta Conservation Plan Briefing October 5, 2013 2 Paul Helliker Deputy Director CA Department of Water Resources
  3. 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
  4. 4. DWR, 2010 California Snowpack Predictions
  5. 5. - 20 ft. - 5 ft. - 15 ft. - 25 ft. Below Sea Level -30 -20 -10 -5 ft Delta Islands Below Sea Level
  6. 6. Data from DFG GrandTab 2012 Report
  7. 7. Data from DFG GrandTab 2012 Report
  8. 8. Source: DFW
  9. 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. 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. 11. • Large Scale Restoration • Alternative Conveyance 11 BDCP Fundamental Components
  12. 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. 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. 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. 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. 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. 17. 10/1/2013 DRAFT - Not for distribution 17 Shasta End of September Storage
  18. 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. 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. 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. 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. 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
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