NAWCA 2020-2 Butte and Colusa Basins Wetlands VI

Status In-progress County Butte, Colusa
Project Type Non-mitigation Location 39.38709° N, -122.16832° W Map
Project Area (Acres) 1,768 Last Updated 22 November 2020
Project Abstract This project will restore or enhance 1,768 acres of palustrine emergent wetlands, palustrine forested habitat and associated uplands.
Project Groups Basin - Colusa | Central Valley Joint Venture

Project Identification

No Data

Habitat Plan

ActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Unknown/Unspecified None None No Data Completed
Enhancement Palustrine Wetland Emergent Freshwater Marsh 1,034 Implementation in-progress
Enhancement Palustrine Wetland Forested Riparian 461.0 Implementation in-progress
Restoration/Re-establishment Palustrine Wetland Emergent Freshwater Marsh 223.0 Implementation in-progress
Enhancement Upland Grassland 50.00 Implementation in-progress

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data


Tract 1: Private Ownership In-progress/Implementation 461.0
Tract 2: Sacramento NWR (match) In-progress/Implementation 112.0
Tract 3: Private Ownership In-progress/Implementation 223.0
Tract 4: Private Ownership In-progress/Implementation 47.00
Tract 5: Private Ownership In-progress/Implementation 115.0
Tract 6: Colusa NWR In-progress/Implementation 187.0
Tract 7: Gray Lodge WA In-progress/Implementation 623.0


DateTypeDescriptionSite Name
No Data


No Data


Enhancement WCB Wildlife Conservation Board $1,310,879
Unknown/Unspecified WCB Wildlife Conservation Board $1,000,000
Enhancement USFWS North American Wetlands Conservation Act $783,459
Restoration/Re-establishment NRCS Wetlands Reserve Easement $333,000
Enhancement CDFW State Duck Stamp $202,571
Restoration/Re-establishment USFWS North American Wetlands Conservation Act $173,600
Enhancement Ducks Unlimited, Inc. $107,049
Enhancement Unknown/Unspecified Private Funder $102,476
Restoration/Re-establishment Unknown/Unspecified Private Funder $100,000
Unknown/Unspecified USFWS North American Wetlands Conservation Act $40,000
Enhancement USFWS Partners for Fish and Wildlife $15,000
Enhancement USFWS U.S. Fish and Wildlife Service $7,704
Unknown/Unspecified Ducks Unlimited, Inc. $4,800
Restoration/Re-establishment Ducks Unlimited, Inc. $4,515

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

No files found.

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