Aliesha L Krall
Biography
Aliesha L. Diekoff has been a hydrologic technician with the US Geological Survey - Minnesota Water Science Center since 2011. In 2013, she earned a BS in Environmental Sciences, Policy, and Management with an emphasis in Water Resources from the University of Minnesota. During her time at the USGS, Aliesha has worked on projects studying groundwater and surface water interaction, assessing the influence of natural copper-nickel bedrocks on water quality, and assessing the enzyme-linked immunosorbent assay (ELISA) reliability as a screening tool for CEC in shallow groundwater.
Work Experience
- Collect groundwater and surface samples
- Measure water levels in wells
- Deploy, monitor, and process dataloggers
- Collect, process, and analyze slug tests data
- Develop synthetic hydrographs for ungaged stream sites
- Collect, process, and analyze water quality samples using ELISA
Technical Skills
- RStudio
- Microsoft suites (Word, Excel, Access, and PowerPoint)
- Adobe Illustrator
- Aqtesolv
USGS Training Courses
- QW 1297 – Water-Quality Data Toolbox
- QW 1028 – Field Water-Quality Methods for Groundwater and Surface Water
Other Publications
Diekoff, A.L., Jones, P.M., 2015, Results of slug tests used to characterize groundwater and surface-water interactions in White Bear Lake, Minnesota: U.S. Geological Survey Internal Report, 22 p.
Science and Products
Ecoflows: Developing Indices of Streamflow Alteration
The Minnesota Pollution Control Agency (MPCA) lists streamflow alteration as a key stressor on aquatic life in many watersheds. However, the MPCA currently does not have the information needed to quantitatively associate metrics from Index of Biological Integrity (IBI) surveys with metrics of streamflow alteration. We are using USGS streamgage data and MPCA IBI data to develop relations...
Predicting geogenic arsenic in drinking water wells in glacial aquifers, north-central USA: Accounting for depth-dependent features
Chronic exposure to arsenic (As) via drinking groundwater is a human health concern worldwide. Probabilities of elevated geogenic As concentrations in groundwater were predicted in complex, glacial aquifers in Minnesota, north‐central USA, a region that commonly has elevated As concentrations in well water. Maps of elevated As hazard were created...
Erickson, Melinda L.; Elliott, Sarah M.; Christenson, Catherine; Krall, Aliesha L. Concentrations of pharmaceuticals and other micropollutants in groundwater downgradient from large on-site wastewater discharges
Large subsurface treatment systems (LSTS) and rapid infiltration basins (RIB) are preferred onsite wastewater treatments compared to direct discharge of treated wastewater to streams and adjacent facilities. Discharge of these wastewater treatments may result in contaminant loading to aquifers that also serve as drinking water sources downgradient...
Elliott, Sarah M.; Erickson, Melinda L.; Krall, Aliesha L.; Adams, Byron A.
Wastewater indicators, hormones, sterols, antibiotics, and pharmaceuticals in soil at an agricultural field irrigated with domestic septage, central Minnesota, September 2014
Treated domestic septage can be used to irrigate agricultural fields as a disposal method or as a means to reuse water. Because traditional on-site treatment systems are not designed to remove wastewater indicators, hormones, sterols, antibiotics, and pharmaceuticals, land application of septage potentially results in soil contamination. Soils...
Elliott, Sarah M.; Erickson, Melinda L.; Krall, Aliesha L.; Adams, Byron A.
Simulation and assessment of groundwater flow and groundwater and surface-water exchanges in lakes of the northeast Twin Cities Metropolitan Area, Minnesota, 2003 through 2013: Chapter B of Water levels and groundwater and surface-water exchanges in lakes of the northeast Twin Cities Metropolitan Area, Minnesota, 2002 through 2015
Water levels during 2003 through 2013 were less than mean water levels for the period 1925–2013 for several lakes in the northeast Twin Cities Metropolitan Area in Minnesota. Previous periods of low lake-water levels generally were correlated with periods with less than mean precipitation. Increases in groundwater withdrawals and land-use changes...
Jones, Perry M.; Roth, Jason L.; Trost, Jared J.; Christenson, Catherine A.; Diekoff, Aliesha L.; Erickson, Melinda L.
smwrGraphs—An R package for graphing hydrologic data, version 1.1.2
This report describes an R package called smwrGraphs, which consists of a collection of graphing functions for hydrologic data within R, a programming language and software environment for statistical computing. The functions in the package have been developed by the U.S. Geological Survey to create high-quality graphs for publication or...
Lorenz, David L.; Diekoff, Aliesha L.
Statistical analysis of lake levels and field study of groundwater and surface-water exchanges in the northeast Twin Cities Metropolitan Area, Minnesota, 2002 through 2015: Chapter A of Water levels and groundwater and surface-water exchanges in lakes of the northeast Twin Cities Metropolitan Area, Minnesota, 2002 through 2015
Water levels declined from 2003 to 2011 in many lakes in Ramsey and Washington Counties in the northeast Twin Cities Metropolitan Area, Minnesota; however, water levels in other northeast Twin Cities Metropolitan Area lakes increased during the same period. Groundwater and surface-water exchanges can be important in determining lake levels where...
Jones, Perry M.; Trost, Jared J.; Diekoff, Aliesha L.; Rosenberry, Donald O.; White, Eric A.; Erickson, Melinda L.; Morel, Daniel L.; Heck, Jessica M.