Oroville Wildlife Area Flood Stage Reduction and Restoration Project

Status In-progress County Butte
Project Type Non-mitigation Location 39.44255° N, -121.62282° W Map
Project Area (Acres) 1,500 Last Updated 6 March 2023
Project Abstract The project will improve the connectivity of the Feather River to its historic floodplain, reduce flood stages within the main channel, provide more frequently inundated floodplain rearing habitat for juvenile salmonids, reduce the extent of invasive species, and plan for future habitat restoration on the Wildlife Area.
Project Groups CDFW Prop 1 | Wildlife Conservation Board
Administrative Region California Department of Fish and Wildlife - Hildie Spautz, CDFW

Project Identification

P1696019 CDFW - Prop 1 Grant ID
Q1996015 CDFW - Prop 1 Grant ID
P1796010 CDFW - Prop 1 Grant ID
46000010630 No permit type
WC-1729SS WCB - Grant Number
WC-1842AP WCB - Grant Number
WC-1554MM WCB - Grant Number
WC-1736BC WCB - Grant Number

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
OWA D Unit None Restoration (unspecified) Vegetation Management, Water Management, Wildlife-specific Measures Seasonal Wetland Floodplain 1,500 Construction planned Seasonal non-tidal
OWA D Unit None Monitoring & Evaluation Vegetation Management Unknown/unspecified habitat None No Data Implementation in-progress Seasonal non-tidal

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data


OWA D Unit In-progress/Implementation 1,500


DateTypeDescriptionSite Name
2025-03-15 Project end date
2024-12-31 Other Vegetation monitoring estimated end date
2022-12-31 Monitoring end Floodplain and fisheries post-project monitoring end date
2021-01-01 Monitoring start Floodplain and fisheries post-project monitoring start date
2021-01-01 Other Vegetation monitoring estimated start date
2020-12-31 Other Vegetation plantings estimated end date
2019-10-31 Groundwork end Construction end date
2019-08-01 Other Vegetation plantings estimated start date
2019-06-15 Groundwork start Construction start date
2017-05-09 Phase start Start of vegetation mapping and management by River Partners OWA D Unit
2016-02-18 Project start date Estimated date


Contact Michael Rogner River Partners Not applicable/Unknown
Contact Michael Bessette Sutter Butte Flood Control Agency Not applicable/Unknown
Consultant Brittney O'Connell Sutter Butte Flood Control Agency Not applicable/Unknown


None Restoration (unspecified) CDFW Prop 1 - Watershed Restoration Grant Program $4,899,572
None Restoration (unspecified) CDWR Urban Flood Risk Reduction Program $4,195,000
None Restoration (unspecified) CDWR Yuba Feather Flood Protection Program $1,658,000
None Restoration (unspecified) WCB Wildlife Conservation Board $825,897

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Criteria

StatusDetailsEvaluation Date
Criteria not evaluated yet Reduce invasive species cover by 50% over the course of the project 2020-03-02
Criteria not evaluated yet Treat 500 acres invasive aquatic and 200 acres terrestrial species 2020-03-02
Name File Type Submitted On Submitted By
2019 Annual Report Monitoring Report 2020-04-01 Brittney O'Connell, Sutter Butte Flood Control Agency
End of Project Report Monitoring Report 2020-04-02 Brittney O'Connell, Sutter Butte Flood Control Agency
Long Term Management Plan Plan Or Permit 2020-04-08 Brittney O'Connell, Sutter Butte Flood Control Agency
Offsite Invasive Species Management Plan Plan Or Permit 2020-04-08 Brittney O'Connell, Sutter Butte Flood Control Agency

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