Tiscornia Marsh Restoration and Sea Level Rise Adaptation Project

Status Planning County Marin
Project Type Non-mitigation Location 37.96902° N, -122.49640° W Map
Project Area (Acres) 12.00 Last Updated 11 January 2023
Project Abstract This project, on a 20-acre site, will restore tidal marsh to benefit endangered Ridgway's Rail and other species, increase flood protection, enhance transition zone habitat and protect against sea level rise.
Project Groups San Francisco Bay Adaptation | San Francisco Bay Joint Venture | San Francisco Bay Joint Venture Project Tours | San Francisco Bay Restoration Authority (Eligible) | San Francisco Bay Restoration Authority (Funded)
Administrative Region San Francisco Bay Joint Venture - Jemma Williams, SFBJV

Project Identification

IDType
651 JV - Record Number
RA-011 SFBRA - Project ID

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Tiscornia Marsh Implementation Restoration/Re-establishment Bay Habitat (SFBJV Only) Beach 2.00 Implementation in-progress
Tiscornia Marsh Implementation Restoration (unspecified) Bay Habitat (SFBJV Only) Tidal marsh 9.00 Implementation in-progress
Tiscornia Marsh Implementation Restoration (unspecified) Upland Inland Dune Scrub 1.00 Implementation in-progress
Tiscornia Marsh None Restoration (unspecified) Sediment Management Bay Habitat (SFBJV Only) Tidal marsh 16.00 Implementation in-progress Fully tidal
Tiscornia Marsh Acquisition None Acquisition/Preservation/Protection Donation Bay Habitat (SFBJV Only) Tidal marsh 20.00 Completed Fully tidal

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data

Sites

NameStatusAcres
Tiscornia Marsh Planning/Scoping 28.00
Tiscornia Marsh Acquisition Completed 20.00

Events

DateTypeDescriptionSite Name
2010-06-02 Project start date

People

TypeNameOrganizationDepartment
Contact Barbara Salzman Marin Audubon Society Not applicable/Unknown

Funding

Funding Need: $1,500,000

PhaseActivityFunderAmount
Implementation Restoration (unspecified) SFBRA San Francisco Bay Restoration Authority - Measure AA $3,082,000
None Restoration (unspecified) SFBRA San Francisco Bay Restoration Authority - Measure AA $968,916
Implementation Restoration/Re-establishment SFBRA San Francisco Bay Restoration Authority - Measure AA $386,000
None Restoration (unspecified) Marin Community Foundation $195,000

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Measures

Plan NamePlan GoalPerformance MeasureMeasure ValueStatusEvaluation Date
San Francisco Bay Restoration Authority Community Engagement Benefits economically disadvantaged communities 0 yes in-progress/partially achieved
San Francisco Bay Restoration Authority Community Engagement Has significant youth involvement component 0 yes in-progress/partially achieved
San Francisco Bay Restoration Authority Community Engagement Number of unique volunteers expected to participate 10 count measure achieved
San Francisco Bay Restoration Authority Community Engagement Number of volunteer hours expected to be contributed 800 count measure achieved
San Francisco Bay Restoration Authority Community Engagement Number of youth participants expected to be engaged 0 count measure achieved
San Francisco Bay Restoration Authority Flood Protection Miles of levee to be constructed 0.34 miles measure achieved
San Francisco Bay Restoration Authority Public Access Miles of Bay Trail to be constructed 0.34 miles measure achieved
San Francisco Bay Restoration Authority Public Access Number of public access facilities to be constructed 0 count measure achieved
Name File Type Submitted On Submitted By
2022 SFBRA Staff Recommendation Other 2022-10-26 Catie Thow, San Francisco Bay Joint Venture
Marin Community Foundation Funding Other 2018-06-28 Catie Thow, San Francisco Bay Joint Venture
Staff Recommendation Other 2019-06-26 Catie Thow, San Francisco Bay Joint Venture
Tiscornia Marsh Plan Or Permit 2021-11-30 Catie Thow, San Francisco Bay Joint Venture
Tiscornia Marsh Happenings - June 2018 Other 2018-06-28 Catie Thow, San Francisco Bay Joint Venture
Tiscornia Marsh Sea Level Rise Adaptation Project Other 2018-06-28 Catie Thow, San Francisco Bay Joint Venture

How to Use the Habitat Development Curve

Habitat Development Curves (HDCs) are used to determine the developmental status and trajectory of on-the-ground projects to create, restore, or enhance California wetland and stream habitats. Each HDC is based on assessments of habitat condition for different age areas of one habitat type that in aggregate represent the full spectrum of habitat development. The assessments of condition are provided by expert applications of the California Rapid Assessment Method (CRAM). Visit the CRAM website for more information about CRAM.

For each HDC, reference condition is represented by areas of a habitat that consistently get very high CRAM scores, have not been subject to disruptive management practices, and exist within landscapes that are protected and managed for their natural conditions. The horizontal lines intersecting the top of an HDC represent the mean CRAM score and standard deviation of scores for 25 qualifying reference areas.

The age of a project is estimated as the elapsed time in years between the groundwork end date for the project and the date of the CRAM assessment. To add or update a groundwork end date, use the Project Events form in Project Tracker (ptrack.ecoatlas.org). The minimum age in years of a non-project area, including any natural reference area, is estimated from all available local information, including historical maps and imagery, historical written accounts, and place-specific scientific studies of habitat development.

An HDC can be used to address the following questions:

  1. At what time in the future will the area of assessed habitat achieve the reference condition or other milestones in habitat development? The HDC can answer this question if the CRAM score for the assessed area is within the confidence interval of the HDC. The answer is the time in years along the HDC between the current age of the assessed area and the future date corresponding to the intersection of the HDC and the reference condition or other milestone.
  2. Is the area of assessed habitat likely to develop faster, slower, or at the same pace as most other areas of the same habitat type? The habitat area is likely to develop faster, slower, or at the same pace if the CRAM score for the area is above, below, or within the confidence interval of the HDC, respectively.
  3. What can be done to improve the condition of the habitat area or to increase its rate of development? HDCs by themselves cannot answer this question. Possible answers can be inferred by the following analysis that involves HDCs:
    1. Examine the HDC for each of the four CRAM Attributes;
    2. Identify the Attribute(s) scoring below the HDC;
    3. For any low-scoring Attribute, examine the component Metric Scores (note: the Metric Scores for any public CRAM assessment in the CRAM database can be obtained through EcoAtlas);
    4. Assume the low score of an Attribute is due to its low-scoring Metric(s);
    5. Consider modifying the design or management of the habitat area in ways that will sustainably increase its score(s) for the low-scoring Metric(s).

For more information about CRAM Attributes and Metrics, including their scientific rationale, see the CRAM Manual.

Display Habitat Development Curves For Wetland Type:

CRAM Site Scores