Andrew C. Ziegler
.Welcome to Andy Ziegler's Profile.
Andy Ziegler became Director the USGS Kansas Water Science Center in 2010. Since 1985, when he started as a student hydrologic technician in Independence, Missouri, he has conducted numerous water-quality studies as a hydrologist, water-quality specialist, and Hydrologic Investigation Chief in Kansas from 1994-2010. In the past 33 years, his studies and reports include acidic mine drainage, geochemistry, transport of agricultural chemicals in ground and surface water, aquifer storage and recovery, reservoir sediment and quality studies, algal toxins, and the use of real-time water quality monitors and statistical analysis to continuously compute constituent concentrations and loads. Andy is an animated advocate in the national environmental monitoring community for the use of real-time water-quality monitors and statistical analysis to compute constituent concentrations and loads.
Science and Products
Filter Total Items: 19
Water Quality in the Equus Beds Aquifer and the Little Arkansas River Before Implementation of Large-Scale Artificial Recharge, South-Central Kansas, 1995-2005
Artificial recharge of the Equus Beds aquifer using runoff from the Little Arkansas River in south-central Kansas was first proposed in 1956 and was one of many options considered by the city of Wichita to preserve its water supply. Declining aquifer water levels of as much as 50 feet exacerbated concerns about future water availability and enhanced migration of saltwater into the aquifer from pas
Authors
Andrew C. Ziegler, Cristi V. Hansen, Daniel A. Finn
Cyanotoxin mixtures and taste-and-odor compounds in cyanobacterial blooms from the midwestern united states
The mixtures of toxins and taste-and-odor compounds present during cyanobacterial blooms are not well characterized and of particular concern when evaluating potential human health risks. Cyanobacterial blooms were sampled in twenty-three Midwestern United States lakes and analyzed for community composition, thirteen cyanotoxins by liquid chromatography/mass spectrometry and immunoassay, and two t
Authors
Jennifer L. Graham, Keith A. Loftin, Michael T. Meyer, Andrew C. Ziegler
Twelve Years of Monitoring Phosphorus and Suspended-Solids Concentrations and Yields in the North Fork Ninnescah River above Cheney Reservoir, South-Central Kansas 1997-2008
Cheney Reservoir, located on the North Fork Ninnescah River in south-central Kansas, is the primary water supply for the city of Wichita and an important recreational resource. Concerns about taste-and-odor occurrences in Cheney Reservoir have drawn attention to potential pollutants, including total phosphorus (TP) and total suspended solids (TSS). July 2009 was the 15th anniversary of the establi
Authors
Mandy L. Stone, Jennifer L. Graham, Andrew C. Ziegler
Guidelines and Procedures for Computing Time-Series Suspended-Sediment Concentrations and Loads from In-Stream Turbidity-Sensor and Streamflow Data
In-stream continuous turbidity and streamflow data, calibrated with measured suspended-sediment concentration data, can be used to compute a time series of suspended-sediment concentration and load at a stream site. Development of a simple linear (ordinary least squares) regression model for computing suspended-sediment concentrations from instantaneous turbidity data is the first step in the comp
Authors
Patrick P. Rasmussen, John R. Gray, G. Douglas Glysson, Andrew C. Ziegler
Transport and sources of suspended sediment in the Mill Creek Watershed, Johnson County, Northeast Kansas, 2006-07
The U.S. Geological Survey, in cooperation with the Johnson County Stormwater Management Program, evaluated suspended-sediment transport and sources in the urbanizing, 57.4 mi2 Mill Creek watershed from February 2006 through June 2007. Sediment transport and sources were assessed spatially by continuous monitoring of streamflow and turbidity as well as sampling of suspended sediment at nine sites
Authors
Casey J. Lee, Patrick P. Rasmussen, Andrew C. Ziegler, Christopher C. Fuller
Estimation of sediment sources using selected chemical tracers in the Perry lake basin, Kansas, USA
The ability to achieve meaningful decreases in sediment loads to reservoirs requires a determination of the relative importance of sediment sources within the contributing basins. In an investigation of sources of fine-grained sediment (clay and silt) within the Perry Lake Basin in northeast Kansas, representative samples of channel-bank sources, surface-soil sources (cropland and grassland), and
Authors
K. E. Juracek, A. C. Ziegler
Water quality of streams in Johnson County, Kansas, 2002-07
Water quality of streams in Johnson County, Kansas was evaluated from October 2002 through December 2007 in a cooperative study between the U.S. Geological Survey and the Johnson County Stormwater Management Program. Water quality at 42 stream sites, representing urban and rural basins, was characterized by evaluating benthic macroinvertebrates, water (discrete and continuous data), and/or streamb
Authors
T. J. Rasmussen
Science and Products
- Publications
Filter Total Items: 19
Water Quality in the Equus Beds Aquifer and the Little Arkansas River Before Implementation of Large-Scale Artificial Recharge, South-Central Kansas, 1995-2005
Artificial recharge of the Equus Beds aquifer using runoff from the Little Arkansas River in south-central Kansas was first proposed in 1956 and was one of many options considered by the city of Wichita to preserve its water supply. Declining aquifer water levels of as much as 50 feet exacerbated concerns about future water availability and enhanced migration of saltwater into the aquifer from pasAuthorsAndrew C. Ziegler, Cristi V. Hansen, Daniel A. FinnCyanotoxin mixtures and taste-and-odor compounds in cyanobacterial blooms from the midwestern united states
The mixtures of toxins and taste-and-odor compounds present during cyanobacterial blooms are not well characterized and of particular concern when evaluating potential human health risks. Cyanobacterial blooms were sampled in twenty-three Midwestern United States lakes and analyzed for community composition, thirteen cyanotoxins by liquid chromatography/mass spectrometry and immunoassay, and two tAuthorsJennifer L. Graham, Keith A. Loftin, Michael T. Meyer, Andrew C. ZieglerTwelve Years of Monitoring Phosphorus and Suspended-Solids Concentrations and Yields in the North Fork Ninnescah River above Cheney Reservoir, South-Central Kansas 1997-2008
Cheney Reservoir, located on the North Fork Ninnescah River in south-central Kansas, is the primary water supply for the city of Wichita and an important recreational resource. Concerns about taste-and-odor occurrences in Cheney Reservoir have drawn attention to potential pollutants, including total phosphorus (TP) and total suspended solids (TSS). July 2009 was the 15th anniversary of the establiAuthorsMandy L. Stone, Jennifer L. Graham, Andrew C. ZieglerGuidelines and Procedures for Computing Time-Series Suspended-Sediment Concentrations and Loads from In-Stream Turbidity-Sensor and Streamflow Data
In-stream continuous turbidity and streamflow data, calibrated with measured suspended-sediment concentration data, can be used to compute a time series of suspended-sediment concentration and load at a stream site. Development of a simple linear (ordinary least squares) regression model for computing suspended-sediment concentrations from instantaneous turbidity data is the first step in the compAuthorsPatrick P. Rasmussen, John R. Gray, G. Douglas Glysson, Andrew C. ZieglerTransport and sources of suspended sediment in the Mill Creek Watershed, Johnson County, Northeast Kansas, 2006-07
The U.S. Geological Survey, in cooperation with the Johnson County Stormwater Management Program, evaluated suspended-sediment transport and sources in the urbanizing, 57.4 mi2 Mill Creek watershed from February 2006 through June 2007. Sediment transport and sources were assessed spatially by continuous monitoring of streamflow and turbidity as well as sampling of suspended sediment at nine sitesAuthorsCasey J. Lee, Patrick P. Rasmussen, Andrew C. Ziegler, Christopher C. FullerEstimation of sediment sources using selected chemical tracers in the Perry lake basin, Kansas, USA
The ability to achieve meaningful decreases in sediment loads to reservoirs requires a determination of the relative importance of sediment sources within the contributing basins. In an investigation of sources of fine-grained sediment (clay and silt) within the Perry Lake Basin in northeast Kansas, representative samples of channel-bank sources, surface-soil sources (cropland and grassland), andAuthorsK. E. Juracek, A. C. ZieglerWater quality of streams in Johnson County, Kansas, 2002-07
Water quality of streams in Johnson County, Kansas was evaluated from October 2002 through December 2007 in a cooperative study between the U.S. Geological Survey and the Johnson County Stormwater Management Program. Water quality at 42 stream sites, representing urban and rural basins, was characterized by evaluating benthic macroinvertebrates, water (discrete and continuous data), and/or streambAuthorsT. J. Rasmussen - Science
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