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Nicholas Corson-Dosch

Nicholas Corson-Dosch is a hydrologist at the USGS Oregon Water Science Center.

Science and Products

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oregon water science center

USGS Oregon Water Science Center Lunchtime Seminar Series (Winter, 2022)

The role of USGS Water Science Centers in western water resource challenges
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Oregon Water Science Center
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USGS Oregon Water Science Center Lunchtime Seminar Series (Winter, 2022)

The role of USGS Water Science Centers in western water resource challenges
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piezometer

Vertical Hydraulic Gradient at the Sediment-Water Interface in Upper Klamath Lake

"The goal of this project is to characterize the vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake."
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Oregon Water Science Center
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Vertical Hydraulic Gradient at the Sediment-Water Interface in Upper Klamath Lake

"The goal of this project is to characterize the vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake."
Learn More

Groundwater Model Archive and Workflow for Neversink/Rondout Basin, New York, Source Water Delineation

This model archive contains model files and a complete repeatable workflow for source water delineation for groundwater supply wells in the Neversink/Rondout Basins of New York. The U.S. Geological Survey, in cooperation with the NYSDEC and NYSDOH, began an investigation in 2019 with the general objectives of (1) improving understanding of the regional groundwater flow system (2) delineating areas
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Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

MODFLOW, MT3D-USGS and VS2DH simulations used to estimate groundwater and nutrient inflow to Upper Klamath Lake, Oregon

One-dimensional vertical models of GW flow (MODFLOW-2005) and solute transport (MT3D-USGS) were calibrated (UCODE) to 2014 observed dissolved silica (Si, 0.2-micron filtered) porewater concentrations in the upper 0.1 m of lakebed sediment to estimate GW flow and Si exchange across the lakebed interface. The Si-based calibrated GW flow rates were then used in conjunction with observed dissolved pho
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Water Resources

Depth-to-water data and calculated vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake, Oregon, 2017

Ten groundwater piezometers and lake-level stilling wells were deployed in Upper Klamath Lake (UKL), Oregon during May through October 2017. Piezometers and stilling wells were deployed in pairs so that water levels could be measured relative to a common measuring point (MP) at each location. Piezometers were installed in the lakebed sediment, with screens from 3.92 to 4.92 feet below the sediment
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Oregon Water Science Center

Benthic vertical hydraulic gradients in Upper Klamath Lake, Oregon, 2017

Groundwater piezometers and lake stilling wells were deployed as paired sets at 10 locations in Upper Klamath Lake in south-central Oregon from May to October 2017 to measure hydraulic heads in and beneath the lake. Continuous water-level data from piezometers and stilling wells were then used to calculate the vertical hydraulic gradient (VHG) across the sediment-water interface to determine the d
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Water Resources, Oregon Water Science Center

Evaluating the dynamics of groundwater, lakebed transport, nutrient inflow and algal blooms in Upper Klamath Lake, Oregon, USA

Transport of nutrients to lakes can occur via surface-water inflow, atmospheric deposition, groundwater (GW) inflow and benthic processes. Identifying and quantifying within-lake nutrient sources and recycling processes is challenging. Prior studies in hypereutrophic Upper Klamath Lake, Oregon, USA, indicated that ~60% of the early summer phosphorus (P) load to the lake was internal and hypothesiz
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Water Resources

Risk-based wellhead protection decision support: A repeatable workflow approach

Environmental water management often benefits from a risk-based approach where information on the area of interest is characterized, assembled, and incorporated into a decision model considering uncertainty. This includes prior information from literature, field measurements, professional interpretation, and data assimilation resulting in a decision tool with a posterior uncertainty assessment acc
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Water Resources, New York Water Science Center, Oregon Water Science Center, Upper Midwest Water Science Center
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Lunchtime Seminar Series (Fall 2018)

Our lunchtime seminars are held Tuesdays from 12pm to 1 pm PT. The science lectures are held at the USGS Oregon Water Science Center at 2130 SW 5th...

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