Matthew K Landon
Matthew Landon has been a Hydrologist with the U.S. Geological Survey since 1990.
He received a M.S. in Geology from the University of Minnesota in 1993 and a B.S. in Geology from the University of Kansas in 1987. He has conducted studies of groundwater hydrology and geochemistry in Minnesota, Nebraska, California, and Southeast Asia. He has been with the USGS California Water Science Center in San Diego since 2005, serving as Program Chief for the Groundwater and Geochemistry Projects Group from 2012-2016 and the California Oil, Gas, and Groundwater Projects Group since 2016.
Science and Products
Filter Total Items: 87
Effects of topography on the transport of agricultural chemicals to groundwater in a sand-plain setting
Geochemical data were collected to investigate the effects of topography and focused recharge on the transport of agricultural chemicals to groundwater through sandy soils. The research was done at a topographically high (upland) site and a depressional (lowland) site within a corn field. Agricultural chemicals that move readily with water were most directly affected by focused recharge to the low
Authors
G. N. Delin, M.K. Landon
Preliminary description of a model of ground-water flow and ground-water/surface-water interaction for predevelopment , 1941-50, and 1950-97 development conditions in part of the Republican River Basin, Nebraska, Kansas, and Colorado as of April 26, 2002
No abstract available.
Authors
Matthew K. Landon
Preliminary data used in a study of ground-water flow and ground-water/surface-water interaction in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.
Authors
Michaela R. Johnson, Matthew K. Landon
Preliminary code, input, and output for the Deep Percolation and Irrigation Requirement Model (DPIRM) for simulating rates of ground-water recharge and pumpage for irrigation in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.
Authors
Matthew K. Landon, J.F. Cornwall
Preliminary data used in estimating ground-water recharge, pumpage, and evapotranspiration in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.
Authors
Michaela R. Johnson, Matthew K. Landon
Streamflow gain/loss in the Republican River Basin, Nebraska, October 1998
This arc and point data set contains streamflow-measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along the Republican River and tributaries in Nebraska during October 25 to 28, 1998 (Boohar, 2000). The streamflow measurements were made to obtain data on ground-water/surface-water interaction. Flow was observed visually to be zero, was measured, or was est
Authors
Michalea R. Johnson, Jennifer S. Stanton, James F. Cornwall, Matthew K. Landon
Effects of surface run-off on the transport of agricultural chemicals to ground water in a sandplain setting
An experiment was conducted at a depressional (lowland) and an upland site in sandy soils to evaluate the effects of surface run-off on the transport of agricultural chemicals to ground water. Approximately 16.5 cm of water was applied to both sites during the experiment, representing a natural precipitation event with a recurrence interval of approximately 100 years. Run-off was quantified at the
Authors
G. N. Delin, M.K. Landon
Comparison of instream methods for measuring hydraulic conductivity in sandy streambeds
Streambed hydraulic conductivity (K) values were determined at seven stream transects in the Platte River Basin in Nebraska using different instream measurement techniques. Values were compared to determine the most appropriate technique(s) for use in sandy streambeds. Values of K determined from field falling‐ and constant‐head permeameter tests analyzed using the Darcy equation decreased as perm
Authors
M.K. Landon, D.L. Rus, Harvey F. Edwin
Effects of ground-water withdrawals on the Rock River and associated valley aquifer, eastern Rock County, Minnesota
A better understanding of the ground-water and surface-water resources of the Rock River Valley in southwestern Minnesota was needed due to concerns surrounding future reliable sources of water for public supply. The Rock River Valley aquifer consists of a surficial sand and gravel unit that underlies the entire Rock River Valley and a buried sand and gravel unit that is present only in the vicini
Authors
Richard J. Lindgren, M.K. Landon
Relation of pathways and transit times of recharge water to nitrate concentrations using stable isotopes
Oxygen and hydrogen stable isotope values of precipitation, irrigation water, soil water, and ground water were used with soil-moisture contents and water levels to estimate transit times and pathways of recharge water in the unsaturated zone of a sand and gravel aquifer. Nitrate-nitrogen (nitrate) concentrations in ground water were also measured to assess their relation to seasonal recharge. Sta
Authors
M.K. Landon, G. N. Delin, S.C. Komor, C.P. Regan
Effects of topography and soil properties on recharge at two sites in an agricultural field
Field experiments were conducted from 1992 to 1995 to estimate ground water recharge rates at two sites located within a 2.7-hectare agricultural field. The field lies in a sand plain setting in central Minnesota and is cropped continuously in field corn. The sites are located at a topographically high (upland) site and a topographically low (lowland) site in an effort to quantify the effects of d
Authors
G. N. Delin, R. W. Healy, M.K. Landon, J.K. Böhlke
Science and Products
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Filter Total Items: 87
Effects of topography on the transport of agricultural chemicals to groundwater in a sand-plain setting
Geochemical data were collected to investigate the effects of topography and focused recharge on the transport of agricultural chemicals to groundwater through sandy soils. The research was done at a topographically high (upland) site and a depressional (lowland) site within a corn field. Agricultural chemicals that move readily with water were most directly affected by focused recharge to the lowAuthorsG. N. Delin, M.K. LandonPreliminary description of a model of ground-water flow and ground-water/surface-water interaction for predevelopment , 1941-50, and 1950-97 development conditions in part of the Republican River Basin, Nebraska, Kansas, and Colorado as of April 26, 2002
No abstract available.AuthorsMatthew K. LandonPreliminary data used in a study of ground-water flow and ground-water/surface-water interaction in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.AuthorsMichaela R. Johnson, Matthew K. LandonPreliminary code, input, and output for the Deep Percolation and Irrigation Requirement Model (DPIRM) for simulating rates of ground-water recharge and pumpage for irrigation in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.AuthorsMatthew K. Landon, J.F. CornwallPreliminary data used in estimating ground-water recharge, pumpage, and evapotranspiration in part of the Republican River Basin, Nebraska, Kansas, and Colorado
No abstract available.AuthorsMichaela R. Johnson, Matthew K. LandonStreamflow gain/loss in the Republican River Basin, Nebraska, October 1998
This arc and point data set contains streamflow-measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along the Republican River and tributaries in Nebraska during October 25 to 28, 1998 (Boohar, 2000). The streamflow measurements were made to obtain data on ground-water/surface-water interaction. Flow was observed visually to be zero, was measured, or was estAuthorsMichalea R. Johnson, Jennifer S. Stanton, James F. Cornwall, Matthew K. LandonEffects of surface run-off on the transport of agricultural chemicals to ground water in a sandplain setting
An experiment was conducted at a depressional (lowland) and an upland site in sandy soils to evaluate the effects of surface run-off on the transport of agricultural chemicals to ground water. Approximately 16.5 cm of water was applied to both sites during the experiment, representing a natural precipitation event with a recurrence interval of approximately 100 years. Run-off was quantified at theAuthorsG. N. Delin, M.K. LandonComparison of instream methods for measuring hydraulic conductivity in sandy streambeds
Streambed hydraulic conductivity (K) values were determined at seven stream transects in the Platte River Basin in Nebraska using different instream measurement techniques. Values were compared to determine the most appropriate technique(s) for use in sandy streambeds. Values of K determined from field falling‐ and constant‐head permeameter tests analyzed using the Darcy equation decreased as permAuthorsM.K. Landon, D.L. Rus, Harvey F. EdwinEffects of ground-water withdrawals on the Rock River and associated valley aquifer, eastern Rock County, Minnesota
A better understanding of the ground-water and surface-water resources of the Rock River Valley in southwestern Minnesota was needed due to concerns surrounding future reliable sources of water for public supply. The Rock River Valley aquifer consists of a surficial sand and gravel unit that underlies the entire Rock River Valley and a buried sand and gravel unit that is present only in the viciniAuthorsRichard J. Lindgren, M.K. LandonRelation of pathways and transit times of recharge water to nitrate concentrations using stable isotopes
Oxygen and hydrogen stable isotope values of precipitation, irrigation water, soil water, and ground water were used with soil-moisture contents and water levels to estimate transit times and pathways of recharge water in the unsaturated zone of a sand and gravel aquifer. Nitrate-nitrogen (nitrate) concentrations in ground water were also measured to assess their relation to seasonal recharge. StaAuthorsM.K. Landon, G. N. Delin, S.C. Komor, C.P. ReganEffects of topography and soil properties on recharge at two sites in an agricultural field
Field experiments were conducted from 1992 to 1995 to estimate ground water recharge rates at two sites located within a 2.7-hectare agricultural field. The field lies in a sand plain setting in central Minnesota and is cropped continuously in field corn. The sites are located at a topographically high (upland) site and a topographically low (lowland) site in an effort to quantify the effects of dAuthorsG. N. Delin, R. W. Healy, M.K. Landon, J.K. Böhlke