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Nancy L Alvarez (Former Employee)

Science and Products

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Carson River, Nev.

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. The USGS provides science support on water quality and quantity, as well as on the impacts of climate change on water resources in the basin.
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Nevada Water Science Center
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Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. The USGS provides science support on water quality and quantity, as well as on the impacts of climate change on water resources in the basin.
Learn More

Discharge, nutrient, and suspended sediment data for selected streams in the Lake Tahoe watershed

A time series of nutrient and mean daily discharge data were used to create models of daily concentration and loads for selected streams of the Lake Tahoe watershed. A total of 15 sites have records ranging from as early as 1972 to 2017. Nutrients in the data set include nitrate, ammonium, Kjeldahl Nitrogen, orthophosphate, and total phosphorus. Total suspended sediment concentrations...
By
California Water Science Center

Supplemental Data for Groundwater Contributions to Excessive Algal Growth in the East Fork Carson River, Carson Valley, West-Central Nevada, 2010 and 2012

This data release contains two tabular data sets of water-quality data collected on the East Fork Carson River. EFCR_CQW.xlsx is a Microsoft Excel workbook containing continuous water-quality data collected by the Nevada Division of Environmental Protection (NDEP) at a site on the East Fork Carson River over two time periods in 2010 and 2012. Data were collected at U.S. Geological Survey...
By
Nevada Water Science Center

Trends in nitrogen, phosphorus, and sediment concentrations and loads in streams draining to Lake Tahoe, California, Nevada, USA

Lake Tahoe, a large freshwater lake of the eastern Sierra Nevada in California and Nevada, has 63 tributaries that are sources of nutrients and sediment to the lake. The Tahoe watershed is relatively small, and the surface area of the lake occupies about 38% of the watershed area (1313 km2). Only about 6% of the watershed is urbanized or residential land, and as part of a plan to...
Authors
Joseph L. Domagalski, Eric D. Morway, Nancy L. Alvarez, Juliet Hutchins, Michael R. Rosen, Robert Coats
By
Water Resources Mission Area, California Water Science Center, Nevada Water Science Center, Wildland Fire Science

Groundwater contributions to excessive algal growth in the East Fork Carson River, Carson Valley, west-central Nevada, 2010 and 2012

Excessive algal growth and low dissolved oxygen concentrations were observed during low streamflow conditions during summer months along a 5,800-foot reach of the East Fork Carson River in Carson Valley, west-central Nevada. Algal growth from nutrient enrichment of a stream reduces aquatic diversity, threatens fish ecology and stream health, and can be a recreational nuisance. In...
Authors
Nancy L. Alvarez, Randy A. Pahl, Michael R. Rosen
By
Water Resources Mission Area, Nevada Water Science Center

Sources of phosphorus to the Carson River upstream from Lahontan Reservoir, Nevada and California, Water Years 2001-02

Discharge of treated municipal-sewage effluent to the Carson River in western Nevada and eastern California ceased by 1987 and resulted in a substantial decrease in phosphorus concentrations in the Carson River. Nonetheless, concentrations of total phosphorus and suspended sediment still commonly exceed beneficial-use criteria established for the Carson River by the Nevada Division of...
Authors
Nancy L. Alvarez, Ralph L. Seiler

Science and Products

link
Carson River, Nev.

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. The USGS provides science support on water quality and quantity, as well as on the impacts of climate change on water resources in the basin.
By
Nevada Water Science Center
link

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. The USGS provides science support on water quality and quantity, as well as on the impacts of climate change on water resources in the basin.
Learn More

Discharge, nutrient, and suspended sediment data for selected streams in the Lake Tahoe watershed

A time series of nutrient and mean daily discharge data were used to create models of daily concentration and loads for selected streams of the Lake Tahoe watershed. A total of 15 sites have records ranging from as early as 1972 to 2017. Nutrients in the data set include nitrate, ammonium, Kjeldahl Nitrogen, orthophosphate, and total phosphorus. Total suspended sediment concentrations...
By
California Water Science Center

Supplemental Data for Groundwater Contributions to Excessive Algal Growth in the East Fork Carson River, Carson Valley, West-Central Nevada, 2010 and 2012

This data release contains two tabular data sets of water-quality data collected on the East Fork Carson River. EFCR_CQW.xlsx is a Microsoft Excel workbook containing continuous water-quality data collected by the Nevada Division of Environmental Protection (NDEP) at a site on the East Fork Carson River over two time periods in 2010 and 2012. Data were collected at U.S. Geological Survey...
By
Nevada Water Science Center

Trends in nitrogen, phosphorus, and sediment concentrations and loads in streams draining to Lake Tahoe, California, Nevada, USA

Lake Tahoe, a large freshwater lake of the eastern Sierra Nevada in California and Nevada, has 63 tributaries that are sources of nutrients and sediment to the lake. The Tahoe watershed is relatively small, and the surface area of the lake occupies about 38% of the watershed area (1313 km2). Only about 6% of the watershed is urbanized or residential land, and as part of a plan to...
Authors
Joseph L. Domagalski, Eric D. Morway, Nancy L. Alvarez, Juliet Hutchins, Michael R. Rosen, Robert Coats
By
Water Resources Mission Area, California Water Science Center, Nevada Water Science Center, Wildland Fire Science

Groundwater contributions to excessive algal growth in the East Fork Carson River, Carson Valley, west-central Nevada, 2010 and 2012

Excessive algal growth and low dissolved oxygen concentrations were observed during low streamflow conditions during summer months along a 5,800-foot reach of the East Fork Carson River in Carson Valley, west-central Nevada. Algal growth from nutrient enrichment of a stream reduces aquatic diversity, threatens fish ecology and stream health, and can be a recreational nuisance. In...
Authors
Nancy L. Alvarez, Randy A. Pahl, Michael R. Rosen
By
Water Resources Mission Area, Nevada Water Science Center

Sources of phosphorus to the Carson River upstream from Lahontan Reservoir, Nevada and California, Water Years 2001-02

Discharge of treated municipal-sewage effluent to the Carson River in western Nevada and eastern California ceased by 1987 and resulted in a substantial decrease in phosphorus concentrations in the Carson River. Nonetheless, concentrations of total phosphorus and suspended sediment still commonly exceed beneficial-use criteria established for the Carson River by the Nevada Division of...
Authors
Nancy L. Alvarez, Ralph L. Seiler
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