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 "description": "<DIV STYLE=\"text-align:Left;\"><DIV><P><SPAN>Reef grid cells have been classified by estimated threat from watershed-based pollution. The threat to reefs from land-based pollutants was modeled for over 300,000 watersheds (catchments) discharging to coastal waters. Relative erosion rates were estimated across the landcape based on slope, land cover type, precipitation, and soil type. Sediment delivery at the river mouth was estimated based on total erosion in the watershed, adjusted for the sediment delivery ratio (based on watershed size) and sediment trapping by dams and mangroves. Sediment plume dispersion was modeled using a linear decay rate from the river mouth and was calibrated against actual sediment plumes observed from satellite data. Values of 0 indicate low threat, 100 indicate medium threat, 1000 indicate high threat.<\/SPAN><\/P><\/DIV><\/DIV>",
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