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This dataset includes high-frequency sensor data collected during four consecutive summers from buoys deployed at main channel and backwater sites in Pool 8 of the Upper Mississippi River from 2015-2018. It also includes the event-specific concentration-discharge metrics (hysteresis and slope) calculated by combining the water quality sensor data with discharge data from a nearby USGS gage in Winona, MN (05378500). High-frequency sensor data were collected using water quality buoys (PISCES monitoring platforms; EMM350 Water Monitoring Pontoon Platform | ysi.com | ysi.com; Yellow Springs, Ohio) set up with EXO2 Multiparameter Sondes (YSI, Inc, Yellow Springs, Ohio) to monitor hourly or bi-hourly concentrations of...
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These data were compiled as part of a long-term (1964 - 2022) water quality monitoring program at Lake Powell. Objectives of our study were to release a consistent record of long-term water quality data. The 58-year limnology dataset captures some water quality parameters (temperature, salinity, major ions, total suspended solids) from reservoir filling to present day. It also contains a 38-year record of secchi depth, and a ~30-year record of nutrients, phytoplankton, and zooplankton assemblages. The data were collected from various sites within the Lake Powell reservoir and the Glen Canyon dam. Regular monthly sampling occurred at three sites near the dam and reservoir-wide sampling was generally conducted quarterly,...
Categories: Data, Data Release - Revised; Tags: Arizona, Aztec Creek, Bridge Creek, Cathedral Canyon, Clear Creek, All tags...
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This data release contains a 17-year record (2005-2022) of discrete chlorophyll data from inland waters, collected from across the nation and territories. These data are from discrete samples (collected in the field and analyzed in the laboratory) from plankton (suspended algae) and periphyton (benthic algae) from lakes, streams, rivers, reservoirs, canals, and other sites. These data are gathered to support process and remote sensing modeling and prediction of Harmful Algal Blooms (HABs). The chlorophyll data were compiled from the Water Quality Portal (WQP) and USGS National Water Quality Lab (NWQL). Data for uncorrected chlorophyll a, corrected chlorophyll a, and pheophytin from EPA Methods 445 and 446 are included...
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Real-time, high frequency (1-second sample interval), georeferenced water quality data was collected in Utah Lake, Utah. Utah Lake is located approximately 45 miles south of Salt Lake City, Utah, and approximately 5 miles west of Provo, Utah. Data was collected on 8/10/16 over an approximate 6.5-hour period (8:00 – 14:30 h PST) while underway. Sample water was continuously pumped through a pickup tube mounted at the stern of the vessel. Sample was pre-filtered using a 178 um in-line strainer, passed through a de-bubbler, and diverted through a 0.2 micron filter to various water quality instrumentation. Data was handled by a Campbell Scientific CR-6 data logger and recorded continuously to a Microsoft Excel file....
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Real-time, high frequency (1-second sample interval) GPS location, water quality, and water isotope (δ2H, δ18O) data was collected in the Cache Slough Complex (CSC), located in the northern San Francisco Bay Delta (SFBD). Data was collected on 10/01/2014 for an approximate 4-hour period (10:30 – 14:30 h PST) while underway on the R/V Mary Landsteiner, a 26-foot USGS vessel. Sample water was pumped continuously through a pickup tube, passed through a 178 micron pre-filter, a de-bubbler, and diverted through a 0.2 micron filter and an unfiltered flow path to water quality instrumentation. The real-time data were recorded using a Campbell Scientific CR-6 data logger. Water isotopes (δ2H, δ18O) were logged to a separate...
    map background search result map search result map High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA High-speed, continuous water quality mapping of Utah Lake, Salt Lake City, UT Limnology data from Lake Powell, desert southwest USA (ver. 2.0, Sept. 2023) A national harmonized dataset of discrete chlorophyll from lakes and streams (2005-2022) Continuous water quality sensor data from the main channel and a backwater of the Upper Mississippi River from 2015-2018 High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA High-speed, continuous water quality mapping of Utah Lake, Salt Lake City, UT Continuous water quality sensor data from the main channel and a backwater of the Upper Mississippi River from 2015-2018 Limnology data from Lake Powell, desert southwest USA (ver. 2.0, Sept. 2023) A national harmonized dataset of discrete chlorophyll from lakes and streams (2005-2022)