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: 92
Comparison of instream methods for measuring hydraulic conductivity in sandy streambeds 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...
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 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...
Authors
Richard J. Lindgren, M.K. Landon
Relation of pathways and transit times of recharge water to nitrate concentrations using stable isotopes 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...
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 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...
Authors
G. N. Delin, R. W. Healy, M.K. Landon, J.K. Böhlke
Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone
Soil water collected from suction lysimeters and wick samplers buried in the unsaturated zone of a sand and gravel aquifer and extracted from soil cores were analyzed for stable oxygen and hydrogen isotope values. Soil water isotopic values differed among the three sampling methods in most cases. However, because each sampling method collected different fractions of the total soil-water...
Authors
M.K. Landon, G. N. Delin, S.C. Komor, C.P. Regan
Science and Products
Filter Total Items: 92
Comparison of instream methods for measuring hydraulic conductivity in sandy streambeds 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...
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 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...
Authors
Richard J. Lindgren, M.K. Landon
Relation of pathways and transit times of recharge water to nitrate concentrations using stable isotopes 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...
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 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...
Authors
G. N. Delin, R. W. Healy, M.K. Landon, J.K. Böhlke
Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone
Soil water collected from suction lysimeters and wick samplers buried in the unsaturated zone of a sand and gravel aquifer and extracted from soil cores were analyzed for stable oxygen and hydrogen isotope values. Soil water isotopic values differed among the three sampling methods in most cases. However, because each sampling method collected different fractions of the total soil-water...
Authors
M.K. Landon, G. N. Delin, S.C. Komor, C.P. Regan