Sean J. Zeiger

Sean J. Zeiger
Lincoln University of Missouri · Department of Agriculture and Environmental Sciences

Ph.D.

About

32
Publications
3,780
Reads
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294
Citations
Introduction
Sean J. Zeiger was appointed Assistant Professor at Lincoln University of Missouri during 2020. Current research interests include measuring and modeling influences of hydroclimate extremes, land use change, and outcomes of best management practices on water quantity and quality in representative experimental watersheds of the Midwest US. Sean is currently working on an Evans-Allen agricultural research project at Lincoln University Farms nested within Moreau River Basin, central Missouri.
Additional affiliations
September 2020 - present
Lincoln University of Missouri
Position
  • Professor (Assistant)
Description
  • Investigating hydroclimate, land use and best management practice influences on water quantity and quality using a nested-scale experimental watershed study design.
October 2018 - December 2018
Missouri State University
Position
  • Instructor
Description
  • Teach three undergraduate courses including: (1) Weather and Climate, (2) Physical Geography, and (3) Conservation of Natural Resources
October 2016 - February 2020
University of Missouri
Position
  • PostDoc Position
Description
  • Use water quantity/quality data collected at nested-gauges to improve understanding of land-use impacts to environmental flows in a mixed-use (urban, agricultural, forested) watershed. Responsibilities are not limited to: modeling, and publish research.
Education
May 2014 - July 2016
University of Missouri
Field of study
  • Natural Resources - Water Resources
August 2011 - May 2014
University of Missouri
Field of study
  • Natural Resources - Water Resources
August 2008 - May 2011
Drury University
Field of study
  • Dual major: Biology - Environmental Science

Publications

Publications (32)
Book
Full-text available
Anthropogenic and natural disturbances to freshwater quantity and quality is a greater issue for society than ever before. To successfully restore water resources in impaired watersheds requires understanding the interactions between hydrology, climate, land use, water quality, ecology, social and economic pressures. Current understanding of these...
Article
Full-text available
Karst terrain confounds efforts to parameterize and calibrate The Soil and Water Assessment Tool (SWAT). The purpose of this study was to use SWAT to simulate long-term natural (e.g. climate) and human (e.g. land use) impacts to streamflow, sediment and nutrient loading in a karst catchment. Sub-objectives were to: (1) perform a rigorous model perf...
Article
There is an immediate need to use available modeling tools to quantify environmental flows targets where changing climate and human activity has altered hydroecologically important streamflow regimes. A model performance assessment was undertaken using observed data collected from five nested gauging sites in a mixed land use watershed of the centr...
Poster
Full-text available
There is an immediate need to quantify and model environmental flows in watersheds where changing climate and human activity has altered hydroecologically important streamflow regimes, water quality variables, and physical habitat. A model performance assessment was undertaken using observed data collected from five nested gauging sites in a mixed...
Poster
Full-text available
A Soil and Water Assessment Tool (SWAT) scenario modeling study. Results show differences between: (1) observed environmental flows, and (2) SWAT simulated pre-settlement environmental flows at five nested gauging sites in Hinkson Creek Watershed, a mixed-land-use watershed of the central US.
Article
Full-text available
Land managers are often inadequately informed to make management decisions in contemporary watersheds, in which sources of impairment are simultaneously shifting due to the combined influences of land use change, rapid ongoing human population growth, and changing environmental conditions. There is, thus, a great need for effective collaborative ad...
Article
Full-text available
Land use can radically degrade stream physical habitat via alterations to channel geomorphology and sedimentological characteristics. However, independent and combined influences such as those of agricultural and urban land use practices on channel geomorphology and substrate composition remain poorly understood. To further understanding of mixed l...
Article
Flow frequency is an important hydrologic statistic to consider in environmental flows assessment. However, there is a paucity of focused interdisciplinary hydrologic assessments that quantify human development influence on flow frequency of small streams (drainage area < 282 km²). Relationships between urban land use and land cover (LULC) and flow...
Article
There is an ongoing need for multidisciplinary investigations that will lead to policy changes that target and reduce natural and anthropic alterations to hydroecological indices important for regional environmental flows management. The hydroecological indices assessed in this study were all deemed ecologically relevant due to causal linkages with...
Article
Full-text available
Competing influences of climate, watershed characteristics, and human activities can confound classic hydrologic process assumptions and, therefore, management efforts in mixed-land-use watersheds. Seven water years (WY2009–2015) of sub-hourly rainfall and stream flow data were collected from five nested gauging sites in a mixed-land-use watershed...
Article
Full-text available
Determining environmental flow requirements to sustain aquatic ecosystem health remains a challenge. The purpose of this research was to quantify the extent of current flow alterations relative to baseline hydrologic conditions of a simulated historic flow regime prior to anthropogenic flow disturbance (i.e., pre-settlement flows). Results allowed...
Article
The purpose of this research was to assess the difference between Soil and Water Assessment Tool (SWAT) simulated pre-development and contemporary developed loading regimes in a mixed-land-use watershed of the central United States (US). Native land cover based on soil characteristics was used to simulate pre-development loading regimes using The S...
Technical Report
Full-text available
An Ozarks Environmental Water Resources Institute (OEWRI) technical report was prepared to guide watershed management efforts of Watershed Committee of the Ozarks. The SWAT model was used to simulate bacteria (E. coli) loading in Little Sac Watershed, Missouri. Outcomes of Best Management Practices (BMP's) were showcased. Results highlight potent...
Article
Full-text available
There is a need for research that advances understanding of flow alterations in contemporary watersheds where natural and anthropogenic interactions can confound mitigation efforts. Event-based flow frequency, timing, magnitude, and rate of change were quantified at five-site nested gauging sites in a representative mixed-land-use watershed of the...
Article
Rapid urbanization and agricultural development have altered flow and pollutant loading regimes resulting in poorly understood pollutant transport regimes and inadequately conceived management practices. Four years of hydrologic and water quality data (i.e. stream flow, suspended sediment, nitrate, nitrite, total ammonium, total inorganic nitrogen,...
Article
Full-text available
Rapid urbanization and agricultural development have altered flow and pollutant loading regimes resulting in poorly understood pollutant transport regimes and inadequately conceived management practices. Four years of hydrologic and water quality data (i.e., stream flow, suspended sediment, nitrate, nitrite, total ammonium, total inorganic nitrogen...
Article
Full-text available
Accurate mean areal precipitation (MAP) estimates are essential input forcings for hydrologic models. However, the selection of the most accurate method to estimate MAP can be daunting because there are numerous methods to choose from (e.g., proximate gauge, direct weighted average, surface-fitting, and remotely sensed methods). Multiple methods (n...
Conference Paper
Full-text available
A nested-scale watershed study design was used to monitor water quantity and quality of an impaired 3rd order stream in a rapidly urbanizing mixed-land-use watershed of the central USA. Grab samples were collected at each gauging site (n=836 samples x 5 gauging sites) and analyzed for suspended sediment, total phosphorus, and inorganic nitrogen spe...
Conference Paper
Full-text available
The impacts of land use on flow and pollutant loading regimes are poorly understood in mixed-land-use watersheds. Stream water quantity and quality was monitored using a nested-scale experimental watershed study design in a rapidly urbanizing mixed-land-use watershed of the central USA. Agricultural land use decreased by 18.4% and urban land use in...
Conference Paper
Full-text available
Advancements in watershed management are both a major challenge, and urgent need of this century. The experimental watershed study (EWS) approach provides critical baseline and long-term information that can improve decision-making, and reduce misallocation of mitigation investments. Historically, the EWS approach was used in wildland watersheds to...
Article
Full-text available
Impacts of urban land use can include increased stormwater runoff temperature (Tw) leading to receiving water quality impairment. There is therefore a need to target and mitigate sources of thermal pollution in urban areas. However, complex relationships between urban development, stormwater runoff and stream water heating processes are poorly unde...
Article
To improve quantitative understanding of mixed-land-use impacts on nutrient yields, a nested-scale experimental watershed study design (n = 5) was applied in a 303(d), clean water act impaired urbanizing watershed of the lower Missouri River Basin, USA. From 2010–2013, water samples (n = 858 sample days per site) were analyzed for total inorganic n...
Article
Hydrologic models that rely on site specific linear and non-linear regression water temperature (Tw) subroutines forced solely with observed air temperature (Ta) may not accurately estimate Tw in mixed-use urbanizing watersheds where hydrogeological and land use complexity may confound common Tw regime assumptions. A nested-scale experimental water...

Questions

Question (1)
Question
I'm working on a rainfall-runoff analysis of 7 years of observed 30 minute precipitation and streamflow time series data. I have delineated individual storms appropriately using time series algorithms in Excel, however, estimating the center of mass of precipitation and the base time of stream flow response for each storm is complicated.
I wanted to check with the community before I manually calculate those variables from around 700 events x 5 monitoring sites (~3,500 events) one-by-one.
Anyone know of a time series filter algorithm, or software to filter out those hydrograph analysis variables for thousands of storms at once?
I have sound estimates of interstorm duration, rainfall duration, rainfall total, time of rise, time of peak flow, flow at time of rise, and peak flow for each storm if that helps. 

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Projects

Project (1)
Project
Measuring and modeling influences of climate extremes, land use change, and best management practices on water quantity and quality in the central US.