Leah E Kammel Lenoch
Leah Lenoch is a scientist in the Web Communications Branch of the USGS Water Resources Mission Area.
Education and Certifications
M.S. Hydrologic Sciences - 2014, University of California-Davis
B.S. Biological Systems Engineering - 2011, University of Wisconsin-Madison
Science and Products
Stream corridor sources of suspended sediment and sediment-bound phosphorus from an urban tributary to the Great Lakes
Potential sources of suspended sediment and sediment-bound phosphorus (sedP) were studied in the Kinnickinnic River (51 square kilometers), a heavily urbanized tributary to Lake Michigan (90% urban land use) in Milwaukee, Wisconsin. The river is 60% concrete lined channels, with few unlined reaches. From September 2019 through August 2020, an integrated study of sediment budget and sediment finger
Authors
James Blount, Leah Lenoch, Faith Fitzpatrick
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco Estuary, Calif
Authors
Adrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew J. Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven Sadro
Stream corridor and upland sources of fluvial sediment and phosphorus from a mixed urban-agricultural tributary to the Great Lakes
Like many impaired Great Lakes tributaries, Apple Creek, Wisconsin (119 km2) has Total Maximum Daily Load (TMDL) targets for reducing suspended sediment and total phosphorus by 51.2 % and 64.2 %, respectively. From August 2017 - October 2018, a stream sediment budget and fingerprinting integrated study was conducted to quantify upland and stream corridor sources of suspended sediment and sediment-
Authors
James Blount, Leah Kammel, Faith Fitzpatrick
Whole-ecosystem experiment illustrates short timescale hydrodynamic, light, and nutrient control of primary production in a terminal slough
Estuaries are among the most productive of aquatic ecosystems. Yet the collective understanding of patterns and drivers of primary production in estuaries is incomplete, in part due to complex hydrodynamics and multiple controlling factors that vary at a range of temporal and spatial scales. A whole-ecosystem experiment was conducted in a deep, pelagically dominated terminal channel of the Sacrame
Authors
Luke C. Loken, Steven Sadro, Leah Lenoch, Paul Stumpner, Randy A Dahlgren, Jon R. Burau, Erwin E Van Nieuwenhuyse
Dispersion and stratification dynamics in the upper Sacramento River deep water ship channel
Hydrodynamics control the movement of water and material within and among habitats, where time-scales of mixing can exert bottom-up regulatory effects on aquatic ecosystems through their influence on primary production. The San Francisco Estuary (estuary) is a low-productivity ecosystem, which is in part responsible for constraining higher trophic levels, including fishes. Many research and habita
Authors
Leah Lenoch, Paul Stumpner, Jon R. Burau, Luke C. Loken, Steven Sadro
Assessment of multiple ecosystem metabolism methods in an estuary
Ecosystem metabolism is a key ecological attribute and easy to describe, but quantifying metabolism in estuaries is challenging. Properly scaling measurements through time and space requires consideration of hydrodynamics and mixing water from heterogeneous sources, making any estimation uncertain. Here, we compared three methods for modeling ecosystem metabolism in a portion of the Sacramento-San
Authors
Luke C. Loken, Erwin E Van Nieuwenhuyse, Randy A Dahlgren, Leah Kammel, Paul Stumpner, Jon R. Burau, Steven Sadro
Stream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes
Fine-grained sediment and phosphorous are major contaminants in the Great Lakes and their tributaries. Plum Creek, Wisconsin (92 km2), a tributary to the Lower Fox River, has a Total Maximum Daily Load
(TMDL) requiring reductions of suspended sediment and phosphorus loading by 70% and 77%, respectively. In 2016-18, an integrated sediment fingerprinting and stream corridor-based sediment budget s
Authors
Faith A. Fitzpatrick, James Blount, Leah Kammel, David L. Hoover, Allen C. Gellis, Barbara C. Scudder Eikenberry
Predicting the occurrence of chemicals of emerging concern in surface water and sediment across the U.S. portion of the Great Lakes Basin
Chemicals of emerging concern (CECs) are introduced into the aquatic environment via various sources, posing a potential risk to aquatic organisms. Previous studies have identified relationships between the presence of CECs in water and broad-scale watershed characteristics. However, relationships between the presence of CECs and source-related watershed characteristics have not been explored acro
Authors
Richard L. Kiesling, Sarah M. Elliott, Leah E. Kammel, Steven J. Choy, Stephanie E. Hummel
A model for evaluating stream temperature response to climate change in Wisconsin
Expected climatic changes in air temperature and precipitation patterns across the State of Wisconsin may alter future stream temperature and flow regimes. As a consequence of flow and temperature changes, the composition and distribution of fish species assemblages are expected to change. In an effort to gain a better understanding of how climatic changes may affect stream temperature, an approac
Authors
Jana S. Stewart, Stephen M. Westenbroek, Matthew G. Mitro, John D. Lyons, Leah E. Kammel, Cheryl A. Buchwald
Non-USGS Publications**
Leah E. Kammel, Gregory B. Pasternack, Duane A. Massa & Paul M. Bratovich
(2016) Near-census ecohydraulics bioverification of Oncorhynchus mykiss spawning microhabitat
preferences, Journal of Ecohydraulics, 1:1-2, 62-78, DOI: 10.1080/24705357.2016.1237264
(2016) Near-census ecohydraulics bioverification of Oncorhynchus mykiss spawning microhabitat
preferences, Journal of Ecohydraulics, 1:1-2, 62-78, DOI: 10.1080/24705357.2016.1237264
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Kinnickinnic River Geochemistry and Rapid Geomorphic Assessments, Waukesha County, Wisconsin
From September 2019 to October 2020 a stream sediment budget and sediment fingerprinting integrated study was conducted to quantify upland and stream corridor sources of suspended sediment and sediment-bound phosphorus using the Sediment Source Assessment Tool (SedSAT) methods with a suite of trace elements. Upland source samples were collected at 45 randomly selected sites in the watershed. Passi
Nutrient Addition Experiment in the Sacramento River Deep Water Ship Channel
Data were collected in the Sacramento River Deep Water Ship Channel (West Sacramento, CA) in support of a whole-ecosystem experiment investigating whether phytoplankton production and biomass would respond to nitrate additions, which could potentially be exported to food-limited regions in the Sacramento-San Joaquin Delta. The experiment was conducted from July 2 to September 18, 2019. Publicati
Surface water and bottom sediment chemical data and landscape variable input datasets for predicting the occurrence of chemicals of emerging concern in 25 U.S. river basins in the Great Lakes basin
This data release includes concentrations of contaminants of emerging concern (CEC), by chemical class, for sites sampled within 25 river basins in the U.S. portion of the Great Lakes basin and associated watershed characteristics. The CEC data include concentrations in surface water and sediment samples that were collected during 2010-2014. During the first 3 years, sample sites near mostly urban
Science and Products
- Publications
Stream corridor sources of suspended sediment and sediment-bound phosphorus from an urban tributary to the Great Lakes
Potential sources of suspended sediment and sediment-bound phosphorus (sedP) were studied in the Kinnickinnic River (51 square kilometers), a heavily urbanized tributary to Lake Michigan (90% urban land use) in Milwaukee, Wisconsin. The river is 60% concrete lined channels, with few unlined reaches. From September 2019 through August 2020, an integrated study of sediment budget and sediment fingerAuthorsJames Blount, Leah Lenoch, Faith FitzpatrickHydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco Estuary, CalifAuthorsAdrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew J. Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven SadroStream corridor and upland sources of fluvial sediment and phosphorus from a mixed urban-agricultural tributary to the Great Lakes
Like many impaired Great Lakes tributaries, Apple Creek, Wisconsin (119 km2) has Total Maximum Daily Load (TMDL) targets for reducing suspended sediment and total phosphorus by 51.2 % and 64.2 %, respectively. From August 2017 - October 2018, a stream sediment budget and fingerprinting integrated study was conducted to quantify upland and stream corridor sources of suspended sediment and sediment-AuthorsJames Blount, Leah Kammel, Faith FitzpatrickWhole-ecosystem experiment illustrates short timescale hydrodynamic, light, and nutrient control of primary production in a terminal slough
Estuaries are among the most productive of aquatic ecosystems. Yet the collective understanding of patterns and drivers of primary production in estuaries is incomplete, in part due to complex hydrodynamics and multiple controlling factors that vary at a range of temporal and spatial scales. A whole-ecosystem experiment was conducted in a deep, pelagically dominated terminal channel of the SacrameAuthorsLuke C. Loken, Steven Sadro, Leah Lenoch, Paul Stumpner, Randy A Dahlgren, Jon R. Burau, Erwin E Van NieuwenhuyseDispersion and stratification dynamics in the upper Sacramento River deep water ship channel
Hydrodynamics control the movement of water and material within and among habitats, where time-scales of mixing can exert bottom-up regulatory effects on aquatic ecosystems through their influence on primary production. The San Francisco Estuary (estuary) is a low-productivity ecosystem, which is in part responsible for constraining higher trophic levels, including fishes. Many research and habitaAuthorsLeah Lenoch, Paul Stumpner, Jon R. Burau, Luke C. Loken, Steven SadroAssessment of multiple ecosystem metabolism methods in an estuary
Ecosystem metabolism is a key ecological attribute and easy to describe, but quantifying metabolism in estuaries is challenging. Properly scaling measurements through time and space requires consideration of hydrodynamics and mixing water from heterogeneous sources, making any estimation uncertain. Here, we compared three methods for modeling ecosystem metabolism in a portion of the Sacramento-SanAuthorsLuke C. Loken, Erwin E Van Nieuwenhuyse, Randy A Dahlgren, Leah Kammel, Paul Stumpner, Jon R. Burau, Steven SadroStream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes
Fine-grained sediment and phosphorous are major contaminants in the Great Lakes and their tributaries. Plum Creek, Wisconsin (92 km2), a tributary to the Lower Fox River, has a Total Maximum Daily Load (TMDL) requiring reductions of suspended sediment and phosphorus loading by 70% and 77%, respectively. In 2016-18, an integrated sediment fingerprinting and stream corridor-based sediment budget sAuthorsFaith A. Fitzpatrick, James Blount, Leah Kammel, David L. Hoover, Allen C. Gellis, Barbara C. Scudder EikenberryPredicting the occurrence of chemicals of emerging concern in surface water and sediment across the U.S. portion of the Great Lakes Basin
Chemicals of emerging concern (CECs) are introduced into the aquatic environment via various sources, posing a potential risk to aquatic organisms. Previous studies have identified relationships between the presence of CECs in water and broad-scale watershed characteristics. However, relationships between the presence of CECs and source-related watershed characteristics have not been explored acroAuthorsRichard L. Kiesling, Sarah M. Elliott, Leah E. Kammel, Steven J. Choy, Stephanie E. HummelA model for evaluating stream temperature response to climate change in Wisconsin
Expected climatic changes in air temperature and precipitation patterns across the State of Wisconsin may alter future stream temperature and flow regimes. As a consequence of flow and temperature changes, the composition and distribution of fish species assemblages are expected to change. In an effort to gain a better understanding of how climatic changes may affect stream temperature, an approacAuthorsJana S. Stewart, Stephen M. Westenbroek, Matthew G. Mitro, John D. Lyons, Leah E. Kammel, Cheryl A. BuchwaldNon-USGS Publications**
Leah E. Kammel, Gregory B. Pasternack, Duane A. Massa & Paul M. Bratovich
(2016) Near-census ecohydraulics bioverification of Oncorhynchus mykiss spawning microhabitat
preferences, Journal of Ecohydraulics, 1:1-2, 62-78, DOI: 10.1080/24705357.2016.1237264**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
- Data
Kinnickinnic River Geochemistry and Rapid Geomorphic Assessments, Waukesha County, Wisconsin
From September 2019 to October 2020 a stream sediment budget and sediment fingerprinting integrated study was conducted to quantify upland and stream corridor sources of suspended sediment and sediment-bound phosphorus using the Sediment Source Assessment Tool (SedSAT) methods with a suite of trace elements. Upland source samples were collected at 45 randomly selected sites in the watershed. PassiNutrient Addition Experiment in the Sacramento River Deep Water Ship Channel
Data were collected in the Sacramento River Deep Water Ship Channel (West Sacramento, CA) in support of a whole-ecosystem experiment investigating whether phytoplankton production and biomass would respond to nitrate additions, which could potentially be exported to food-limited regions in the Sacramento-San Joaquin Delta. The experiment was conducted from July 2 to September 18, 2019. PublicatiSurface water and bottom sediment chemical data and landscape variable input datasets for predicting the occurrence of chemicals of emerging concern in 25 U.S. river basins in the Great Lakes basin
This data release includes concentrations of contaminants of emerging concern (CEC), by chemical class, for sites sampled within 25 river basins in the U.S. portion of the Great Lakes basin and associated watershed characteristics. The CEC data include concentrations in surface water and sediment samples that were collected during 2010-2014. During the first 3 years, sample sites near mostly urban