Named sources behind the hub. References are provided in plain text, without external links.
United States Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modelling, Atlantic Coastal Environmental Sciences Division. Repository name: USEPA / provisional_habs. Current explorer coverage: 2026 provisional CSV. Earlier repository files exist for 2022, 2024 and 2025 and are not included in this explorer.
The repository README describes Lake Archer, Wrentham, Massachusetts, and Mashapaug Pond, Providence, Rhode Island. The actual 2026 CSV instead contains cunliff, mashapaug and rwp zoo. This hub preserves those source identifiers and does not assume the README describes every current row. Collection methods include buoys, FLAMe flow-through monitoring and laboratory analyses. Data are provisional and may be revised.
Mauna Loa monthly means and seasonally adjusted values, in ppm. Attribution: NOAA Global Monitoring Laboratory and Scripps Institution of Oceanography; Xin Lan and Ralph Keeling. Historical background: Keeling and colleagues (1976); Thoning, Tans and Komhyr (1989).
Explore the separate climate record ↗USGS Water Science School: Temperature and Water; Turbidity and Water; pH and Water. USGS National Field Manual, Chapter A6: Field Measurements. EPA National Aquatic Resource Surveys: Indicators: Dissolved Oxygen (updated February 24, 2026). EPA: Small Systems with a Big Problem: Harmful Algal Blooms.
Read the measurement guide ↗US EPA, What Are the Effects of HABs; NOAA, Are all algal blooms harmful?
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, Basic Information on Nutrient Pollution; Nutrients parameter factsheet, July 2021.
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, The Effects: Environment; Water Quality Impacts of Nutrients Research.
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, Climate Change and Freshwater Harmful Algal Blooms.
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, What Are the Effects of HABs; NOAA, What are the impacts of harmful algal blooms?
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, Health and Environmental Effects of Hazardous Air Pollutants.
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.
US EPA, Report on the Environment: Human Exposure and Health.
Used for educational context; not evidence of a current local event. Reference reviewed October 2026. Publication date is not asserted where not confirmed.