1.0 DCPLUS 20260616 17572900 20260616 17572900 https://www.arcgis.com/sharing/rest/content/items/35f924b3750b4f2985be110285ef6f22/info/thumbnail/ago_downloaded.png https://www.arcgis.com/home/item.html?id=35f924b3750b4f2985be110285ef6f22 35f924b3750b4f2985be110285ef6f22 Feature Service https://services6.arcgis.com/2DGR1sZBUvcPcd8Z/arcgis/rest/services/Nitrate/FeatureServer Nitrate nitrate gulf of mexico hypoxia nutrients water quality sourceId-abe43f045d8d4b0e9cae4c820f8c8df7 copied with ago-assistant Nitrate observations from monitoring stations across the Gulf, provided by the Gulf of America Coastal Ocean Observing System (GCOOS). <p>This layer presents seawater nitrate data for the Gulf, collected through the Gulf of America Coastal Ocean Observing System (GCOOS), the regional association responsible for coordinating ocean observing across the Gulf.</p><p>Nitrate is a key nutrient and water-quality indicator. Elevated nitrate levels, often driven by riverine and land-based runoff into the Gulf, contribute to nutrient enrichment that can fuel harmful algal blooms and seasonal hypoxia, including the recurring "dead zone" in the northern Gulf of Mexico. Monitoring nitrate supports research, ecosystem and fisheries management, and water-quality assessment across the region. The data is drawn from GCOOS observing assets.</p> -98.3627265240925 -80.03709472805426 31.015705713731183 17.838776774463923 1 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35f924b3750b4f2985be110285ef6f22 https://services6.arcgis.com/2DGR1sZBUvcPcd8Z/arcgis/rest/services/Nitrate/FeatureServer Feature Service EPSG