This U.S. Geological Survey (USGS) Data Release provides discrete water-quality data collected from four sites on the Kansas River and four of its tributaries during July 2012 through September 2016. The water-quality constituents included in this data release are the cyanotoxins microcystin and cylindrospermopsin, the taste-and-odor compounds geosmin and 2-methylisoborneol, major ions, alkalinity, nutrients, suspended sediment, indicator bacteria, and actinomycetes bacteria.

This U.S. Geological Survey (USGS) Data Release provides continuously-measured water-quality data collected from two sites on Milford Lake, Kansas, during July 26-27 and August 30-31, 2015. All data are reported as raw measured values and are not rounded to USGS significant figures. Water-quality monitors were used to measure water temperature, specific conductance, turbidity, pH, chlorophyll, phycocyanin, and dissolved oxygen at fifteen-minute intervals. This dataset includes all continuously measured data collected at two short-term, fixed-site locations as part of a study to evaluate the spatial variability of harmful algal blooms in Milford Lake, Kansas.

This U.S. Geological Survey (USGS) Data Release provides continuously-measured water-quality data collected from two sites on Milford Lake, Kansas, during July 26-27 and August 30-31, 2015. All data are reported as raw measured values and are not rounded to USGS significant figures. Water-quality monitors were used to measure water temperature, specific conductance, turbidity, pH, chlorophyll, phycocyanin, and dissolved oxygen at fifteen-minute intervals. This dataset includes all continuously measured data collected at two short-term, fixed-site locations as part of a study to evaluate the spatial variability of harmful algal blooms in Milford Lake, Kansas.

This U.S. Geological Survey (USGS) Data Release provides spatial water-quality data collected from Indian Creek in Johnson County, Kansas, on May 23, 2013, July 23, 2014, July 30, 2015, and August 26, 2015. Continuous water-quality monitors were used to measure water temperature, specific conductance, pH, turbidity, dissolved oxygen, chlorophyll, phycocyanin, nitrate, and fluorescent dissolved organic matter (fDOM) at 30-second intervals along a 13.3-kilometer reach of Indian Creek. This data release was produced in compliance with the federal open-data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. This dataset includes all continuously (30-second intervals) measured spatial data collected as part of a study to describe the spatiotemporal variability of nutrients in Indian Creek.

This U.S. Geological Survey (USGS) Data Release provides spatial water-quality data collected from Indian Creek in Johnson County, Kansas, on May 23, 2013, July 23, 2014, July 30, 2015, and August 26, 2015. Continuous water-quality monitors were used to measure water temperature, specific conductance, pH, turbidity, dissolved oxygen, chlorophyll, phycocyanin, nitrate, and fluorescent dissolved organic matter (fDOM) at 30-second intervals along a 13.3-kilometer reach of Indian Creek. This data release was produced in compliance with the federal open-data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. This dataset includes all continuously (30-second intervals) measured spatial data collected as part of a study to describe the spatiotemporal variability of nutrients in Indian Creek.

This data release provides water-quality data collected and analyzed by the U.S. Geological Survey (USGS) and the Kansas Department of Health and Environment (KDHE) during 1972 through 2020. This data release includes a discrete water-quality concentration dataset (total dissolved solids, chloride, ammonia, nitrate, nitrite, nitrate plus nitrite, total Kjeldahl nitrogen, orthophosphate, total phosphorus, total suspended solids, and fecal coliform bacteria densities) used for characterization of water-quality trends in the Kansas River. This data release also includes two datasets containing annual flow-normalized and low-flow water-quality concentrations and loads (total dissolved solids, chloride, ammonia, dissolved inorganic nitrogen (computed by summing ammonia and nitrate plus nitrite), total nitrogen (computed by summing total Kjeldahl nitrogen and nitrate plus nitrite), orthophosphate, total phosphorus, total suspended solids, and fecal coliform bacteria densities), with confidence intervals, at the Kansas River at Wamego, KS (USGS station 06887500) and the Kansas River at De Soto, KS (USGS station 06892350). Annual flow-normalized and low-flow concentrations and loads were computed using the Exploration and Graphics for RivER Trends (EGRET) R package and Weighted Regressions on Time, Discharge, and Season (WRTDS) model (Hirsch and others, 2010; Hirsch and De Cicco, 2015). Confidence intervals for annual flow-normalized and low-flow concentrations and loads were computed using the EGRET Confidence Intervals (EGRETci) R package (Hirsch and others, 2015).

This data release provides water-quality data collected and analyzed by the U.S. Geological Survey (USGS) and the Kansas Department of Health and Environment (KDHE) during 1972 through 2020. This data release includes a discrete water-quality concentration dataset (total dissolved solids, chloride, ammonia, nitrate, nitrite, nitrate plus nitrite, total Kjeldahl nitrogen, orthophosphate, total phosphorus, total suspended solids, and fecal coliform bacteria densities) used for characterization of water-quality trends in the Kansas River. This data release also includes two datasets containing annual flow-normalized and low-flow water-quality concentrations and loads (total dissolved solids, chloride, ammonia, dissolved inorganic nitrogen (computed by summing ammonia and nitrate plus nitrite), total nitrogen (computed by summing total Kjeldahl nitrogen and nitrate plus nitrite), orthophosphate, total phosphorus, total suspended solids, and fecal coliform bacteria densities), with confidence intervals, at the Kansas River at Wamego, KS (USGS station 06887500) and the Kansas River at De Soto, KS (USGS station 06892350). Annual flow-normalized and low-flow concentrations and loads were computed using the Exploration and Graphics for RivER Trends (EGRET) R package and Weighted Regressions on Time, Discharge, and Season (WRTDS) model (Hirsch and others, 2010; Hirsch and De Cicco, 2015). Confidence intervals for annual flow-normalized and low-flow concentrations and loads were computed using the EGRET Confidence Intervals (EGRETci) R package (Hirsch and others, 2015).

This U.S. Geological Survey (USGS) Data Release provides continuously-measured water-quality data collected from two sites on Milford Lake, Kansas, during May 25-26, June 8-10, July 20-21, and September 14-15, 2016. All data are reported as raw measured values and are not rounded to USGS significant figures. Water-quality monitors were used to measure water temperature, specific conductance, turbidity, pH, chlorophyll, phycocyanin, dissolved oxygen, and fluorescent dissolved organic matter (fDOM) at fifteen-minute intervals. This dataset includes all continuously measured data collected at two short-term, fixed-site locations as part of a study to evaluate the spatial variability of harmful algal blooms in Milford Lake, Kansas.

This U.S. Geological Survey (USGS) Data Release provides continuously-measured water-quality data collected from two sites on Milford Lake, Kansas, during May 25-26, June 8-10, July 20-21, and September 14-15, 2016. All data are reported as raw measured values and are not rounded to USGS significant figures. Water-quality monitors were used to measure water temperature, specific conductance, turbidity, pH, chlorophyll, phycocyanin, dissolved oxygen, and fluorescent dissolved organic matter (fDOM) at fifteen-minute intervals. This dataset includes all continuously measured data collected at two short-term, fixed-site locations as part of a study to evaluate the spatial variability of harmful algal blooms in Milford Lake, Kansas.

The datasets provided here are the output from the Seasonal Kendall Trend (SKT) test and Weighted Regressions on Time, Discharge, and Season (WRTDS) model that characterize changes in water quality in rivers and streams across the Delaware River Basin. SKT results are compiled in "skt_out.csv" for all combinations of site, water-quality parameter, and trend period. WRTDS results are compiled in four datasets. If unspecified, generalized flow normalization (GFN) results are reported. Stationary flow normalization (SFN) results are indicated in the datasets. "wrtds_out_annResults.csv" contains the annual estimates of mean concentration and load and GFN and SFN estimates by site and parameter for the entire calibration period. "wrtds_out_annResultsCIs.csv" gives confidence intervals for GFN annual estimates. "wrtds_out_bootOut.csv" gives the results of the bootstrap trend test by site, parameter, and trend period. "wrtds_out_pairsOut.csv" gives the trend component estimates (concentration-discharge trend component (CQCT, also referred to as the "management" trend component (MTC)) and discharge trend component (QTC)) and related information, by site, parameter, trend period, and estimate type (i.e. concentration or load). Finally, the "eList" for each WRTDS model (site-parameter combination) is available in the zipped folder. References Cited: Hirsch, R.M., and De Cicco, L.A., 2015, User guide to Exploration and Graphics for RivEr Trends (EGRET) and dataRetrieval: R packages for hydrologic data (version 2.0, February 2015): U.S. Geological Survey Techniques and Methods book 4, chap. A10, 93 p., https://doi.org/10.3133/tm4A10.