Multi-Benefit Treatment Wetland along the San Leandro Shoreline for Contaminant Removal and Sea Level Rise Adaptation

Status Planning County Alameda
Project Type Non-mitigation Location 37.71409° N, -122.19859° W Map
Project Area (Acres) 4.30 Last Updated 22 May 2019
Project Abstract This project plans to convert a degraded 4.3 acre shore-side storage basin to a multi-benefit treatment wetland for removal of wastewater-borne nutrients & contaminants of emerging concern, as well as demonstration of sea level rise adaptation strategies within a heavily industrialized neighborhood.
Project Groups San Francisco Bay Restoration Authority (Eligible) | San Francisco Bay Restoration Authority (Funded)

Project Identification

RA-007 SFBRA - Project ID

Habitat Plan

ActivityHabitatSubHabitatAcresActivity StatusWater Regime
Restoration Bay Habitat (SFBJV Only) Unknown/Unspecified 4.30 Planning/Scoping Unknown/Unspecified

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data


Storage Basin Planning/Scoping 4.30


DateTypeDescriptionSite Name
No Data


Contact Dean Wilson City of San Leandro Water Pollution Control Plant
Contact Sally Barros City of San Leandro Public Works


Funding Need: $1,000,000

Restoration SFBRA San Francisco Bay Restoration Authtority - Measure AA $539,000

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Criteria

StatusDetailsEvaluation Date
Criteria not evaluated yet Implement restoration of 4.3 acre treatment wetland to remediate soils, reduce nutrient loading by ~15%, and enhance freshwater/brackish wetland habitat 2021-01-01
Criteria not evaluated yet Complete preliminary and final design for restoration of a degraded 4.3 acre storage basin to a multi-benefit treatment wetlan 2019-06-30
Criteria not evaluated yet Develop a community-led long-term vision for the surrounding shoreline for subsequent project phases 2019-06-01
Criteria not evaluated yet Secure funding for project implementation 2018-10-01
Criteria not evaluated yet Secure funding for planning, design and permitting 2018-03-31
Upload files or links
Name File Type Submitted On Submitted By
Staff Recommendation Other 2019-05-08 Alexis Barrera, Coastal Conservancy

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 ( 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