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This USGS Data Release represents water and sediment quality data collected in the Grand Canyon region of northern Arizona. This dataset comprises water quality results from spring and stream sites in Grand Canyon that were sampled through a cooperative effort by U.S. National Park Service (NPS) personnel during 2016 and 2017. NPS personnel collected water samples from spring and stream sites in Grand Canyon. Water samples were filtered using a syringe and 0.45 µm filter and preserved with nitric acid. Filtered and preserved samples were analyzed by the USGS Geology, Geophysics, and Geochemistry Science Center Laboratory for a suite of elements using inductively coupled plasma - mass spectrometry (ICP-MS) methods...
Categories: Data
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This dataset comprises water quality results from monitoring sites on major tributaries of the Colorado River in the Grand Canyon region beginning in 2015. These tributary sites include Little Colorado River above the mouth near Desert View, Arizona (USGS site ID 09402300); Kanab Creek above the mouth near Supai, Arizona (USGS site ID 09403850); Havasu Creek above the mouth near Supai, Arizona (USGS site ID 09404115); House Rock Wash below Emmett Wash in Rider Canyon, Arizona (USGS site ID 363851111482000); and Paria River at Lees Ferry, Arizona (USGS site ID 09382000). Monitoring of the Little Colorado River, Kanab Creek, and Havasu Creek sites began in 2015, with other sites added later.
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This data release contains approximately three years of modeled chlorophyll-a—a proxy for planktonic algal biomass—transport through a 394-km portion of the Illinois River. Defined by four distinct reaches, model estimates include daily water balance, velocities, and algal biomass separated into its components of net growth, net loss, transported from upstream, and input from tributaries. First release: February 2024 Revised: April 2024 (ver. 1.1)
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This dataset includes pipe-flow monitoring data in sewers used to analyze the water budget at RecoveryPark in Detroit, Michigan. These are provided as 3 text comma separated format files at sewer locations that drain the study area. In addition, there are 6 text comma separated format files containing the Rhodamine dye tracer concentrations collected in the combined sewer locations for this study. The Dye tracer files constitute two separate dye tracer tests in different parts of the sewer system done in the same day.
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Optical sensors measuring fluorescence of dissolved organic matter (fDOM) are increasingly used in water quality studies because they provide proxy measurements for a variety of contaminants and constituents of concern including metals and wastewater effluent. Similarly, sensors measuring fluorescence of chlorophyll (fChl) and phycocyanin (fPC) have gained popularity to measure phytoplankton concentration, biomass, and even primary productivity. Optical sensors require calibration using a calibration standard solution which is diluted from a working stock solution. However, preparation of stock solutions is challenging because they are difficult to prepare accurately, need to be prepared in a laboratory setting,...
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This USGS data release contains datasets and metadata associated with identifying locations of groundwater seepage to streams in the Upper Shawsheen River Watershed in Massachusetts. Data were collected in August 2023 to characterize the spatial distribution of groundwater seeps along streambanks within Elm Brook, Hartwell Brook, and the Shawsheen River. Discharge measurements were made at 19 locations within the Upper Shawsheen River Watershed to help identify areas of groundwater influx. Thermal-infrared imaging was combined with field measurements of temperature to identify groundwater seepage to surface waters. This data release contains locations of discharge measurements, GPS locations of identified groundwater...
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This dataset is a collection of hyperspectral imagery profiles of algae, many associated with Harmful Algae Blooms (HABs). Data were collected using a microscope-based hyperspectral imaging system with the cooperation of the National Institute of Standards and Technology. Samples were collected from U.S. Geological Survey (USGS) water quality sampling efforts, to include water quality parameters and algal biomass. Data are shown in basic hyperspectral imagery form, normalized to 1.
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This dataset comprises sediment chemistry results from monitoring sites on the Colorado River and major tributaries of the Colorado River in the Grand Canyon region beginning in 2016. Main-stem Colorado River sites include Colorado River near Grand Canyon (USGS site ID 09402500) and Colorado River above Diamond Creek (USGS site ID 09404200). The tributary sites include Little Colorado River above the mouth near Desert View, Arizona (USGS site ID 09402300); Kanab Creek above the mouth near Supai, Arizona (USGS site ID 09403850); Havasu Creek above the mouth near Supai, Arizona (USGS site ID 09404115); House Rock Wash below Emmett Wash in Rider Canyon, Arizona (USGS site ID 363851111482000); and Paria River at Lees...
This USGS Data Release represents time series water quality data collected at select spring sites in the Grand Canyon region of northern Arizona. This dataset comprises time series water quality results from select spring sites in the Grand Canyon region that were sampled using a MiniSipper auto sampler. These spring sites include Salt Spring (USGS Site ID: 360439112094101) and Willow 1 Spring (Site ID: 363357112440801). The MiniSipper auto sampler collects up to 250 five-mL, 0.45 um filtered and acidified water samples. Samples are stored in a 500' teflon tubing sample coil and adjacent water samples are separated by air bubbles (Chapin and Todd, 2012). Water samples are analyzed for a suite of elements using...
Categories: Data
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Harmful algal blooms (HABs) have recently been observed in rivers, including the Illinois River in the Midwest United States. The Illinois River Basin has a history of eutrophication issues, primarily caused by the excessive loading of nitrogen and phosphorus from urban and agricultural sources. Recent events have seen the emergence of cyanobacterial harmful algal blooms in the area. This data release provides early warning indicator (EWI) metrics derived from a continuous chlorophyll concentration dataset obtained from seven water quality monitoring sites along the Illinois River. These metrics include the first-order autoregressive process (Ar1) and the standard deviation (SD) of chlorophyll, which serve as leading...


    map background search result map search result map Modeled transport components of daily chlorophyll-a in the Illinois River, 2018 through 2020 (version 1.1, April 2024) Stability testing results for stock solutions to standardize calibration of field fluorescence sensors Hyperspectral profiles of Harmful Algal Blooms (HABs) and other algae, 2022 Thermal Infrared Images of Groundwater Seeps in the Upper Shawsheen River Watershed, Massachusetts Data release: early warning indicators for harmful algal bloom assessments in the Illinois River, 2013 - 2020 Select pipe-flow monitoring data from RecoveryPark in Detroit, MI (2015–2021) Suspended sediment chemistry results from the Colorado River and tributaries in Grand Canyon Water quality results from Colorado River tributaries in Grand Canyon Select pipe-flow monitoring data from RecoveryPark in Detroit, MI (2015–2021) Thermal Infrared Images of Groundwater Seeps in the Upper Shawsheen River Watershed, Massachusetts Stability testing results for stock solutions to standardize calibration of field fluorescence sensors Water quality results from Colorado River tributaries in Grand Canyon Suspended sediment chemistry results from the Colorado River and tributaries in Grand Canyon Data release: early warning indicators for harmful algal bloom assessments in the Illinois River, 2013 - 2020 Modeled transport components of daily chlorophyll-a in the Illinois River, 2018 through 2020 (version 1.1, April 2024) Hyperspectral profiles of Harmful Algal Blooms (HABs) and other algae, 2022