Adaptation and Resilience Plan for the Petaluma River Baylands

Status Proposed County Marin, Sonoma
Project Type Unknown/Unspecified Location 38.16728° N, -122.54600° W Map
Project Area (Acres) No Data Last Updated 27 February 2024
Project Abstract Sonoma Land Trust (SLT), Sonoma Resource Conservation District (SRCD), San Francisco Estuary Institute (SFEI), Point Blue Conservation Science (PBCS) and Ducks Unlimited (DU) will develop an Adaptation and Resilience Implementation Plan for the Petaluma River Baylands (Plan). The Plan will identify opportunities to increase resilience and facilitat
Project Groups San Francisco Bay Adaptation
Administrative Region San Francisco Bay Adaptation - Todd Hallenbeck, Bay Conservation and Development Commission

Project Identification

1 BCDC - Permit Number
2 BCDC - Permit Number

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Petaluma River Baylands None Restoration/Rehabilitation Bay Habitat (SFBJV Only) Tidal marsh No Data Planning in-progress
Petaluma River Baylands None Restoration/Re-establishment Estuarine Wetland Marsh No Data Planning in-progress Fully tidal
Petaluma River Baylands None Restoration (unspecified) Estuarine Wetland Marsh No Data Planning in-progress Fully tidal

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data


Petaluma River Baylands Proposed No Data


DateTypeDescriptionSite Name
2021-03-01 Project end date
2019-09-01 Project start date


Contact Julian Meisler Sonoma Land Trust Not applicable/Unknown


Funding Need: $250,000

No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
2021-09-30 6.1 NWCA 10102 Petaluma Marsh estuarine perennial saline 83
2021-09-21 6.1 NWCA 2021-10143 estuarine perennial saline 79
2021-09-21 6.1 NWCA 2021- 10025 estuarine perennial saline 70
2021-05-14 6.1 NWCA 21 - 10041 estuarine perennial saline 66
2011-07-12 5.0.2 NWCA 1133 estuarine perennial saline 88
2011-07-11 5.0.2 NWCA 2940 Petaluma Marsh estuarine perennial saline 90
2011-07-10 5.0.2 NWCA-1127 estuarine perennial saline 82
2011-07-10 5.0.2 NWCA 4706 Petaluma Marsh estuarine perennial saline 84
2011-07-09 5.0.2 NWCA 2949 Petaluma Marsh estuarine perennial saline 92
2011-07-08 5.0.2 NWCA 4721 Petaluma Marsh estuarine perennial saline 90
2011-07-07 5.0.2 NWCA 2918 estuarine perennial saline 79
2007-09-17 4.6 Petaluma North estuarine perennial saline 93
2007-09-17 4.6 Shultz Slough estuarine perennial saline 92
2005-09-14 3.55 Upper Petaluma estuarine perennial saline 86
2005-07-11 3.5 Black John Slough estuarine perennial saline 85
Name File Type Submitted On Submitted By
Study Boundary Other 2020-08-11 Todd Hallenbeck, San Francisco Bay Conservation and Development Commission

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