Catalog - Data.gov

Long-term mean annual total nitrogen and total phosphorus loads estimated using Fluxmaster 5-parameter models and detrended to 2012, Midwest Region of the United States, 1999-2014

Organization: Department of the Interior
Updated: 20210301 | Harvested: July 16, 2025 at 03:38 PM

This USGS data release contains long-term mean annual total nitrogen and total phosphorus load estimates, and the model coefficients used to obtain the load estimates, for streams in the Midwest...

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Water-quality and streamflow datasets used for estimating loads considered for use in the 2002 Midcontinent nutrient SPARROW models, United States and Canada, 1970-2012

Organization: Department of the Interior
Updated: 20200827 | Harvested: July 18, 2025 at 05:11 AM

The United States Geological Survey’s (USGS) SPAtially Referenced Regressions On Watershed attributes (SPARROW) model was developed to aid in the interpretation of monitoring data and simulate...

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Water-quality and streamflow datasets used for estimating long-term mean streamflow and annual loads to be considered for use in the 2012 regional streamflow, nutrient and sediment SPARROW models, United States, 1999-2014

Organization: Department of the Interior
Updated: 20200826 | Harvested: July 18, 2025 at 07:56 AM

The United States Geological Survey’s (USGS) SPAtially Referenced Regressions On Watershed attributes (SPARROW) model was developed to aid in the interpretation of monitoring data and simulate...

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Mean seasonal time-step estimates of daily streamflow and daily baseflow, and loads of total nitrogen, total phosphorus, and total suspended solids at surface-water stations in the southeastern United States, 2001-14

Organization: Department of the Interior
Updated: 20220908 | Harvested: July 16, 2025 at 12:43 PM

This metadata record describes mean seasonal time-step estimates of daily streamflow and daily baseflow, and total and baseflow estimates of loads of total nitrogen, total phosphorus, and total...

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Mean annual loads of suspended sediment, total suspended solids, and silicate solutes at selected fixed water-quality stations in western Oregon and northwestern California (1951-2016)

Organization: Department of the Interior
Updated: 20200827 | Harvested: July 17, 2025 at 07:28 PM

This data set contains mean annual loads of suspended sediment, total suspended solids, and dissolved silicate minerals for select watersheds of western Oregon and northwestern California between...

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Estimated seasonal nitrogen and phosphorus loads in selected streams of the conterminous United States, 1999 - 2020

Organization: Department of the Interior
Updated: 20241015 | Harvested: July 15, 2025 at 10:41 PM

Estimated seasonal total nitrogen and total phosphorus loads during 1999 through 2020 in selected streams of the conterminous United States and water-quality and stream flow data used to generate...

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Nutrient Calibration Load Estimation Data for the Puget Sound Region, 2005 through 2020

Organization: Department of the Interior
Updated: 20250131 | Harvested: July 15, 2025 at 07:22 PM

This data release contains estimated seasonal total nitrogen (TN) and total phosphorus (TP) loads during 2005 through 2020 in selected streams of the watersheds draining to Washington waters of...

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