Long-term marine water quality data

Data availability and qualifiers

detailed-profile data

• 1990 - present
• 0.5 meter depth intervals
• 7 possible parameters parameters

discrete sample data

• 1973 - present
• 0, 10, and 30 meter depths (mostly)
• 31 possible parameters

pre-1990 data

Data quality and measurement procedures varied significantly. Data available upon request.

form to request off-line data
(or to request other information)

data qualifier (qc) codes

Note: Methods indicated for data from 1990 onwards in parameters table. Quality codes 1 and 2 displayed on this site.

reference tables

• parameters and units
• cast count by station/year
• cast count by parameter/year