BDCP Aquatic Habitat Restoration
Suisun Marsh Area
Minimum tidal marsh restoration target: 7,000 acres
Total area: 82,970 acres
Sa
cra
me
nt
o R
iv
er
San Jo
aquin River
Suisun
Bay
Isleton
Tracy
Brentwood
Pittsburg
Walnut
Grove
Freeport
Sacramento
Yo
lo
By
pa
ss
Clifton Court
Forebay
HOLLAND
TRACT
HOTCHKISS
TRACT
BACON
ISLAND
McDONALD
TRACT
MANDEVILLE
ISLAND
FRANKS
TRACT
BETHEL
TRACT
WEBB
TRACTBRADFORD
ISLAND
JERSEY
ISLAND
VENICE
ISLAND
BOULDIN
ISLAND
BRANNAN
ISLAND
SHERMAN
ISLAND
LOWER ROBERTS
ISLAND
LOWER JONES
TRACT
RINDGE
TRACT
EMPIRE
TRACT
KING
ISLAND
TERMINOUS
TRACT
STATEN
ISLAND
TYLER
ISLAND
GRAND
ISLAND
RYER
ISLAND
BRACK
TRACT
NEW HOPE
TRACT
McCORMACK
WILLIAMSON
TRACT
UPPER JONES
TRACT
MIDDLE ROBERTS
ISLAND
UPPER ROBERTS
ISLAND
UNION
ISLAND
VICTORIA
ISLAND
BYRON
TRACT
ORWOOD
TRACT
PALM
TRACT
WRIGHT-ELWOOD
TRACT
BISHOP
TRACT
SA
CR
AM
EN
TO
DE
EP
W
AT
ER
SH
IP
CH
AN
NE
L
Cache Slough
St
ea
m
bo
at
S
lou
gh
Su
tte
r S
lou
gh
Sacr
ame
nto
R
ive
r
Middle River
San Joaquin River
LindseySlough
M
ontezuma Slough
Suisun Marsh
Cosumnes/Mokelumne Area
Minimum tidal marsh restoration target: 1,500 acres
Total area: 7,805 acres
East Delta Area
Minimum tidal marsh restoration target: 1,400 acres
Total area: 9,033 acres
South Delta Area
Minimum tidal marsh restoration target: 5,000 acres
Total area: 39,969 acres
FREMONT WEIR
Potential Aquatic Habitat
Restoration Areas
West Delta Area
Minimum tidal marsh restoration target: 2,100 acres
Total area: 6,178 acres
PR
OS
PE
CT
IS
LA
ND
LIB
ER
TY
IS
LA
ND
Yolo Bypass/Cache Slough Area
Minimum tidal marsh restoration target: 5,000 acres
Total area: 49,167 acres
SUTTER
ISLAND
Planning Area Boundary (Statutory Delta)*
*Conservation measures also are identified
in Suisun Marsh and upper Yolo Bypass areas.
ProPosed Habitat restoration and enHancement tyPes, areas and acreage targets
Habitat type
Phasing of restoration over time
Potential area (general location)
by year 10 by year 15 by year 40
Channel Margin
-restore/enhance shaded
riverine, marsh, mudflat
habitat
20 linear
miles
Potentially any project levees along the San Joaquin
River and other levees anywhere in the planning area
that are important to salmon. In the north Delta,
current interest is focused on Steamboat and Sutter
sloughs.
Floodplain (new)
-levee setbacks, land surface
re-contouring, natural
meander belts
1,000 Acres 10,000 Acres
Potentially anywhere in the planning area, with current
interest along the San Joaquin River downstream of
Vernalis; on Fabian tract along Old River; on Union
Island and Upper Roberts Island on Middle River. The
plan currently identifies a narrow area along the eastern
alignment of the Sacramento Deep Water Ship Channel
as a potential new flood bypass for future study.
Floodplain
(enhanced existing)
11,500–21,000
Increased frequency and duration of existing floodplain
inundation in the Yolo Bypass targeting inundation for
30 to 45 days from December to April.
Tidal Marsh
-intertidal marsh, subtidal
estuarine, upland sea
level rise
accommodation
14,000 Acres 25,000 Acres 65,000 Acres
Minimum acreage targets set in Restoration
Opportunity Areas (ROAs) as noted at right. Initial
restoration would be focused on Cache Slough, Suisun,
and West Delta ROAs. Over the 50-year plan horizon,
restoration would be expanded within these areas, and
additional restoration would be located in Cosumnes-
Mokelumne, East Delta, and South Delta ROAs.
Riparian
-riparian forest and scrub
restoration
1,300 Acres 2,300 Acres 5,000 Acres
Potentially anywhere in the planning area, although
favoring locations where other restoration is occurring
as appropriate.
The Bay Delta Conservation Plan will include a comprehensive approach for restoring key natural ecosystem functions in the Delta’s highly altered environment. A central component
of this plan focuses on aquatic habitat conservation, which includes seasonally inundated
floodplain, riparian, channel margin, and tidal marsh restoration and enhancement in strategic
locations throughout the Delta. Although specific restoration and enhancement sites may not
be identified until plan implementation, the chart below and map at right note potential areas
where habitat restoration could occur after additional review and environmental analysis. Please
see reverse page for more information about future site selection criteria and management plans.
9/2/09
Potential new floodplain habitat along the Sacramento
Deep Water Ship Channel and in the south Delta would
be contingent on integration of possible combined flood
control benefits, as well as significant cost-sharing from
flood control partners at the federal, state and local levels.
Additional tidal marsh restoration over
and above the minimum tidal marsh
targets in each ROA, up to the total 40-
year target of up to 65,000 acres, would
be expected to occur over the life of the
plan depending in part on the availability
of willing sellers, as well as the total
relative amount of suitable habitat within
each ROA, among other factors.
For more information, contact Karla Nemeth at 916-651-7587.
Future Site Selection Criteria
The following is a list of some of the site selection criteria that will be
used, along with local input, to identify lands for habitat restoration
and enhancement.
Feasibility
• Minimized effects on existing land uses
• Site availability
• Cost effectiveness in implementing restoration
• Potential effects on mosquito vector control
Biological Attributes
• Ability to achieve multiple biological objectives for multiple
species
• Proximity to channel systems that could benefit from
restoration (e.g., increased tidal flows may help reduce bi-
directional flows in upstream channels, or support greater
mixing in channels, both of which are beneficial for native fish)
• Capacity to contribute to more natural transitions between
habitats in the Delta (seasonal wetland, riparian, grassland)
• Proximity to existing habitats so that new restoration adds to
and develops habitat corridors for fish and wildlife
• Minimal effects of other stressors (such as nearby water
diversions or discharges of low quality water) that could offset
intended fish and wildlife benefits
Habitat Restoration
Management Plans
Individual habitat management plans will guide long-term
management of restoration sites and will include:
• Biological goals and objectives to be met by the restoration
activity
• Site-specific monitoring requirements and approach to adaptive
management
• Controls for invasive plants
• Controls for non-native predators and competitor species
• Vegetation management and infrastructure maintenance
• Public access and other allowable uses
Important Habitat Strategy Concepts
One of the primary conservation benefits of separating the water supply system from the
Delta estuary is that it creates the ability to restore critical ecosystem functions—such as
spawning and rearing habitat, production of food for fish, and fish migration patterns—
throughout the Delta that are essential for species recovery.
Broad geographic distribution of habitat throughout the estuary is intended to improve
ecological processes and function. During the first 10 years of implementation, while
the Delta estuary remains the sole water supply conveyance route, habitat restoration
would be focused in the north and west Delta and Suisun Marsh. After a dual conveyance
system is operational, habitat restoration would be expanded to the Mokelumne and San
Joaquin River areas. This approach is intended to help fish species recover by improving
productivity and habitat quality and their resilience to variations in the ecosystem that
could occur with climate change.
Another overarching strategy guiding the conservation plan is to restore habitat in large
patches to increase the likelihood of providing the desired levels of ecological functions
and to support large numbers of covered species.
Terrestrial Species
The draft conservation strategy includes biological goals and objectives for more than 40
sensitive wildlife and plant species, and also provides for the development of conservation
measures to help their recovery. Design of conservation measures for these species
would build upon the habitat restoration components of this plan but also would include
additional habitat protection measures to complement the strategies of locally led
conservation plans in areas next to and overlapping the Delta, many of which recognize
and acknowledge the terrestrial habitat value of working agricultural lands in the Delta.
Plant and wildlife conservation measures would be implemented in coordination with
the local organizations in a way that complements local habitat conservation goals and,
where feasible, would build on compatible existing land uses (as through conservation
easements and wildlife-friendly agriculture).
Frequently Asked Questions
Q: How much land and what locations are identified for
potential habitat restoration?
A: The draft Conservation Strategy identifies acreage targets
for various habitat restoration types that would be a legal
requirement of the plan. It identifies general areas where
restoration could be focused, such as potential suitable tidal
marsh restoration areas and floodplain enhancement in the
Yolo Bypass. It also identifies areas of particular interest for
further habitat restoration study, such as Steamboat and Sutter
Sloughs (channel margin enhancement), and Old and Middle
Rivers (restoration of seasonally inundated floodplain habitat)
although these types of habitat restoration potentially could
occur in numerous places throughout the statutory Delta and
Suisun Marsh.
Q: How would landowners be affected by restoration
activities?
A: If the BDCP is approved, its implementing entity would identify
and evaluate specific lands based in part on restoration
suitability and the willingness of landowners to sell their
property or grant conservation easements. Once a location
is identified, habitat restoration designs and long-term
habitat restoration management plans will be developed.
This detailed information will be subject to site-specific
environmental review in addition to the environmental review
currently underway on the entire BDCP so that impacts can be
adequately identified and mitigated.
Q: What would happen to habitat restoration activities
planned, in progress, or needing monitoring if there is
not enough funding?
A: All lands acquired by the BDCP for habitat restoration would
be managed in perpetuity. As required by law, the BDCP will
include a cost and financing plan for all conservation measures,
including habitat restoration.
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