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Phosphorus Flux from Onsite Sewage Disposal Systems (OSDS) - Hawaii

This layer represents the phosphorus flux coming from onsite sewage disposal systems (OSDS) (e.g., cesspools and septic tanks). OSDS point data were obtained from the University of Hawaii at Manoa (UH) (Aly El-Kadi) and the State of Hawaii Department of Health (DOH) (Bob Whittier) that estimates nitrogen flux from each property, or Tax Map Key (TMK) parcel, with OSDS. The Ocean Tipping Points (OTP) project converted the points to raster by summing nutrient flux values within 500-m pixels. A Focal Statistics tool was then used to calculate the total flux within a 1.5-km radius of each offshore pixel. Units are in grams per day per km squared. The area of interest is from the shoreline of the Main Hawaiian Islands extending 5 km offshore and 1 km inshore.

About this Dataset

Updated: 2025-04-21
Metadata Last Updated: 2025-04-18T03:19:34.485Z
Date Created: N/A
Data Provided by:
Dataset Owner: N/A

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Table representation of structured data
Title Phosphorus Flux from Onsite Sewage Disposal Systems (OSDS) - Hawaii
Description This layer represents the phosphorus flux coming from onsite sewage disposal systems (OSDS) (e.g., cesspools and septic tanks). OSDS point data were obtained from the University of Hawaii at Manoa (UH) (Aly El-Kadi) and the State of Hawaii Department of Health (DOH) (Bob Whittier) that estimates nitrogen flux from each property, or Tax Map Key (TMK) parcel, with OSDS. The Ocean Tipping Points (OTP) project converted the points to raster by summing nutrient flux values within 500-m pixels. A Focal Statistics tool was then used to calculate the total flux within a 1.5-km radius of each offshore pixel. Units are in grams per day per km squared. The area of interest is from the shoreline of the Main Hawaiian Islands extending 5 km offshore and 1 km inshore.
Modified 2025-04-18T03:19:34.485Z
Publisher Name N/A
Contact N/A
Keywords Earth Science > Biosphere > Aquatic Ecosystems > Reef Habitat , Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Reef > Coral Reef , Earth Science > Human Dimensions > Environmental Impacts , Earth Science > Human Dimensions > Environmental Impacts > Contaminant Levels/Spills , Earth Science > Human Dimensions > Environmental Impacts > Sewage Disposal , Earth Science > Human Dimensions > Human Settlements > Coastal Areas , Earth Science > Human Dimensions > Sustainability > Environmental Sustainability , Earth Science > Oceans > Coastal Processes > Coral Reefs , Earth Science > Oceans > Ocean Chemistry > Phosphorus , Earth Science > Oceans > Water Quality > Ocean Contaminants , Continent > North America > United States Of America > Hawaii , Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands , PacIOOS > Pacific Islands Ocean Observing System , PacIOOS > Pacific Islands Ocean Observing System , environment , oceans , utilitiesCommunication
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