California Aquatic Organism Tissue Sample Results

Results from the California Environmental Data Exchange Network (CEDEN) provide tissue analysis data for individual and composite aquatic organism samples. The dataset includes provisional data quality indicators to assist with metadata interpretation. Data is split into annual resources due to file size constraints.

Use Cases

• Analyze contaminant bioaccumulation trends in aquatic organism tissue samples over time.
• Compare tissue analysis results between individual and composite sample types.
• Assess data reliability using the provisional DataQuality and DataQualityIndicator fields.
• Filter and query specific data subsets for regional water quality studies in California.

Strengths

• Data originates from the authoritative California Environmental Data Exchange Network (CEDEN).
• Includes provisional data quality metadata fields (DataQuality, DataQualityIndicator) for result interpretation.
• Offers multiple access methods including bulk downloads, annual API endpoints, and an interactive query tool.

Limitations

• Unknown total row count and specific column schema limits initial assessment of analytical scope.
• Data is split across annual files, requiring joins for multi-year analysis.
• Relies on provisional quality flags which may require user validation.

Provenance

Source

California Environmental Data Exchange Network (CEDEN)

Collection Method

Environmental monitoring and laboratory analysis of tissue from organisms collected in surface waters.

Time Range

Annual splits indicate multi-year coverage; specific range unknown.

Freshness

Last updated March 2026.

Geography

Surface waters in California, United States.