Reports & Data

Priorities & Objectives

• Priorities, Objectives & Metrics

Scenario Development

• Approach to Analysis
• Preliminary Concepts
• Approach to Watershed Modeling

Evaluation Criteria Summaries

• Summary Table of All Criteria
• Bird Habitat Suitability Criteria
• Juvenile Rearing Salmon Habitat Suitability Criteria
• Secondary Productivity and Export Criteria
• Agricultural Impacts Criteria
• Agricultural Compatibility Criteria
• Managed Wetland and Recreational Hunting Criteria

Phase I Report

• Download Phase I Report

Phase I Report Appendices

1. Priorities & Objectives & Metrics Memorandum
2. Communications and Engagement Plan
3. Baseline Review of Existing Conditions
4. Opportunities, Constraints, and Considerations Memorandum
5. Hydrodynamic Modeling Report
6. Salmon Benefits Model
7. Waterfowl Bioenergetics Model
8. Shorebird Bioenergetics Model
9. Juvenile Rearing Salmon Habitat Evaluation Criteria
10. Bird Habitat Evaluation Criteria
11. Secondary Productivity / Export Evaluation Criteria
12. Managed Wetlands and Waterfowl Hunting Impacts Evaluation Criteria
13. Agricultural Suitability Criteria
14. Juvenile Salmon Rearing Habitat Enhancement Opportunities within the Sacramento River Corridor
15. Sanborn Slough Bifurcation Structure Flow Measurements
16. Benden Farms Enhancement Opportunities
17. Decision Support Tool for Fish Food Inventory
18. Fish Science Uncertainties and Recommended Data Needs

Modeling Results

These model runs are not intended to be proposed projects. These model runs are intended to inform land managers of their decision-making.

Butte Basin Operable Gate Concepts Animations 

• Baseline Model Results – Butte Upper Region 
• Baseline Model Results –Butte Middle Region 

Baseline Model Results – Butte Lower Region 

Geographic Area: From Gridley Colusa Highway to Hwy 20, including Moulton and Colusa Weirs. Time Period: October – July of each year

• 2003 Baseline Model Results
• 2011 Baseline Model Results
• 2013 Baseline Model Results
• 2015 Baseline Model Results
• 2019 Baseline Model Results

Butte Notch Animations

• Butte Basin – Moulton Weir Operable Gate 1000 cfs Action
• Butte Basin – Moulton Weir Operable Gate 2000 cfs Action
• Butte Basin – Moulton Weir Operable Gate 3000 cfs Action
• Butte Basin – Moulton Weir Operable Gate 6000 cfs Action
• Butte Basin – Colusa Weir Operable Gate 2000 cfs Action 
• Butte Basin – Colusa Weir Operable Gate 3000 cfs Action 
• Butte Basin – Moulton & Colusa Weir Operable Gates 2000 cfs Action 
• Butte Basin – Moulton & Colusa Weir Operable Gates 3000 cfs Action 

Colusa Basin Operable Gate Concepts Animations

• Colusa Basin – Higher Wallace Weir Management + 1000 cfs Notch Actions 
• Colusa Basin – Higher Wallace Weir Management + 2000 cfs Notch Actions 
• Colusa Drain 1k Notch + Higher Wallace & Davis Weir Management
• Colusa Drain 2k Notch + Higher Wallace & Davis Weir Management

Science Needs

• Summary Table – Chinook Salmon Science Uncertainties and Data Needs
• Chinook Salmon Science Uncertainties Technical Memorandum