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Overview of Bay Delta Conservation Plan and Importance to Santa Clara County
March 1, 2014 League of Women Voters
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CLEAN, RELIABLE WATER
FLOOD PROTECTION
HEALTHY CREEKS & ECOSYSTEMS
Santa Clara Valley Water District
|
Sources of Supply for Santa Clara County
3 3
Shasta Lake Federal Central Valley Project
Sacramento- San Joaquin River Delta
Hetch Hetchy San Francisco
Lake Oroville State Water Project
|
Local and Imported Water Supplies Are Managed to Prevent Groundwater Overdraft and Land Surface Subsidence
4
|
Delta is the hub of California’s water system
|
District’s Water Master Plan Strategy
Secure existing supplies and
infrastructure
Optimize the use of existing supplies and
infrastructure
Increase water recycling and conservation
Meet drought year needs, adapt to climate change, manage uncertainty
|
Water Conservation Program = Long-Term Savings
7
Population and Water Use Over Time
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
19
93
19
94
19
95
19
96
19
97
19
98
19
99
20
00
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
20
30
56,000
98,500
Acre-feet/yr
SCVWD Water Conservation Savings/Target
| 8
Delta Stewardship
Council
Delta Conservancy
Delta Protection Plan
Bay Delta Conservation
Plan
State Water Resources
Control Board
• MISSION: “help achieve the CO-EQUAL GOALS of providing more reliable water supply for California and protecting, restoring and enhancing the Delta’s ecosystem.”
Delta Plan—
adopted 2013
Strategic Plan Economic
Sustainability Plan
Delta Flow Criteria
Water Quality
Control Plan
Conservation Plan
(HCP/NCCP)
Delta Planning Framework
|
Delta conveyance (CM 1): New diversion facilities with state of the art fish
screens to help restore more natural flow patterns
Habitat development (CM 2-11):
Up to 113,000 acres of new and restored habitat, including 65,000 acres of tidal marsh and 5,000 acres
of riparian forest
Other stressor reduction (CM 12-22): Measures to address contaminants, in-Delta diversions, invasive species, illegal harvest,
migratory pathways, and predation
BDCP Conservation Measures (CM): 22 total
.
For fish species: •Restore tidal habitat (65,000 acres) •New floodplain (10,000 acres)
Delta smelt Longfin smelt
Chinook salmon Steelhead Sturgeon
Splittail Lampreys
|
BDCP Benefits
1. Improve water supply reliability
2. Reduce seismic risk
3. Improve water quality
4. Restore Delta ecosystem
|
BDCP: Improve water supply reliability
0
50,000
100,000
150,000
200,000
250,000
Average Wet Above Normal Below Normal Dry Critical
De
live
rie
s to
San
ta C
lara
Val
ley
Wat
er
Dis
tric
t A
cre
-Fe
et
pe
r Y
ear
Water Year Type
Future No Action, Low Deliveries
Future No Action, High Deliveries
BDCP, Low Deliveries
BDCP, High Deliveries
SWP/CVP Long-Term Average Annual Deliveries
BDCP: 4.7 MAF – 5.6 MAF
Future No Action: 3.5 MAF – 3.9 MAF
| 13
BDCP: Reduce seismic risk
State and Federal Pumping Plants
• Isolated facility
allows minimum
deliveries to continue
Otherwise—
• Deliveries impaired
or shut down for 6
months to 2 years
• Estimated time to
build “freshwater
pathway” = 200 days
|
BDCP: Improve water quality
Indoor
Use
Wastewater
Treatment Plant
Groundwater
Recharge Treated Water
Imported Water
Outdoor
Use
Recycled
Water
Indirect
Potable
Reuse
Groundwater Basin
Brine
Disposal Bay
Dire
ct P
ota
ble
Re
use
|
BDCP Cost Assumptions
Common assumptions:
o District’s CVP costs based on long-term average CVP
deliveries
o District’s SWP costs based on contract amount
High estimate:
o higher deliveries/lower Delta outflow
o 50/50 cost split between SWP/CVP
Low estimate:
o lower deliveries/higher Delta outflow
o 55/45 cost split between SWP/CVP
|
BDCP Capital and O&M Costs
Costs in constant 2012
dollars ($ millions)
Costs in present value
($ millions)
BDCP capital and O&M costs
$24,754 $17,686
BDCP costs allocated to SWP and CVP contractors (all Plan elements)
$16,930 $13,323
BDCP costs allocated to District (estimated)
$640 - $740 $504 - $583
|
BDCP Costs to Santa Clara County
Incremental Costs to Santa Clara County by FY2029
M&I groundwater charge ($/AF)
North County $132 - $172
South County $87 - $114
SWP tax, average single family ($/year)
North County $28 - $31
South County $22 - $24
Total cost per average household ($/month)
North County $7 - $8
South County $3 - $4
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Next Steps
The Public Review Draft BDCP and Environmental Impact
Report/Environmental Impact Statement (EIR/EIS) are currently
available for public review and comment through June 13, 2014.
May 2013 Oct 2013 Dec 2013
Dec – June
(180 days)
|
Next Steps
Date Subject
Apr 2014
BDCP Interim Financing (approval of bond
documents and CEO authorization for funding
agreements).
May 2014 Review and discuss formal District comments on
Public Review Draft BDCP and EIR/EIS.
July 2014 Review and update relevant Board Policy and CEO
Interpretations.
Fall 2014 Review and discuss resolution of outstanding BDCP
policy issues, and District status as a permittee.
Questions? Valleywater.org
Save20gallons.org