Haylie Brown
Haylie is a hydrologist at the Wyoming-Montana Water Science Center based out of Helena, Montana.
Haylie began her career with the USGS in 2022 as a hydrologic technician, and later transitioned into the role of a hydrologist. Her current work focuses on flood frequency analysis, and various sediment projects, including sediment transport and sediment fingerprinting. Her main research interest is fluvial geomorphology.
Education and Certifications
BS in Geoscience and a certificate in GIS, University of Montana
MS in Earth Science, University of Northern Colorado focusing on fluvial geomorphology
Science and Products
Characterizing Hydrologic and Geomorphic Processes in a Spring-Fed, Cold-Desert Headwater Stream
The role of natural versus human-influenced factors in sedimentation of Littlefield Creek, a small, high-desert creek in south-central Wyoming is currently unknown. In general, there is little empirical information about both hydrologic and geomorphic processes (together described as hydrogeomorphic) in these types of streams. To develop a better understanding of hydrogeomorphic processes, their...
Peak-Flow Frequency Analysis for Selected Montana Streamgages
Peak-flow frequency information is needed for flood-plain mapping, design of highway infrastructure, and many other purposes across Montana. The USGS Wyoming-Montana Water Science Center has an ongoing project working to update peak-flow frequency estimates at USGS streamgages across the state.
Peak-flow frequency analyses for selected streamgages in Wyoming, based on data through water year 2022 (ver. 1.1, July 2025) Peak-flow frequency analyses for selected streamgages in Wyoming, based on data through water year 2022 (ver. 1.1, July 2025)
The USGS Wyoming-Montana Water Science Center (WY–MT WSC) completed a report (Siefken and others, 2025) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. This data release, published in cooperation with the Wyoming Water Development Office, presents peak-flow frequency analyses for selected streamgages in Wyoming, based on data...
Streamflow, water quality, and energy development characteristics and water-quality trends for selected sites in the Green River and Muddy Creek drainage basins, southwestern Wyoming, water years 2006–16 Streamflow, water quality, and energy development characteristics and water-quality trends for selected sites in the Green River and Muddy Creek drainage basins, southwestern Wyoming, water years 2006–16
Energy resource development in southwestern Wyoming has been rapidly expanding since the early 2000s to include innovative technologies for extracting oil and gas and enhancing renewable energy. In response to concerns about the potential negative effects of energy development on natural resources, the Wyoming Landscape Conservation Initiative was created to implement a long-term...
Authors
Steven K. Sando, Cheryl A. Eddy-Miller, Roy Sando, Sara L. Caldwell Eldridge, Seth E. Younger, Haylie M. Brown
The influence of riparian zone grazing on channel stability in an arroyo The influence of riparian zone grazing on channel stability in an arroyo
The introduction of large herds of domesticated grazing animals by European immigrants in the late 19th century is one primary hypothesis used to explain the initiation of arroyo cutting in the American West. But studies designed to quantify the effects of grazing on watershed hydrology and sedimentation have had conflicting results that are often scale dependent. We used a before-and...
Authors
Jason S. Alexander, Cheryl A. Eddy-Miller, Jacob B. Stout, Haylie M. Brown
Suspended-sediment and phosphorus response in a fire-affected central Montana headwater catchment Suspended-sediment and phosphorus response in a fire-affected central Montana headwater catchment
Purpose Eutrophication and nuisance filamentous algal blooms (i.e. Cladophora) are increasingly common occurrences throughout much of the western United States. Wildfire may be contributing to the frequency and magnitude of algal blooms through excess sediment and nutrient loading to streams and rivers. Our objective was to evaluate the effects the 2021 Woods Creek Fire had on sediment...
Authors
Gregory D. Clark, Michael W. Suplee, Haylie M. Brown, Molly A. Moloney, Rodney R. Caldwell
Fluvial sediment dynamics in the Shoshone River and tributaries around Willwood Dam, Park County, Wyoming Fluvial sediment dynamics in the Shoshone River and tributaries around Willwood Dam, Park County, Wyoming
Sedimentation affects many of the aging reservoirs in the United States. Dams and water diversions from rivers have been central elements of infrastructure supporting agricultural irrigation in the arid and semiarid regions of the Western United States for more than a century. The Willwood Irrigation District diversion dam (hereafter referred to as “Willwood Dam”) in Park County, Wyoming...
Authors
Jason S. Alexander, Haylie M. Brown, Cheryl A. Eddy-Miller, Jason Burckhardt, Laura Burckhardt, Christopher A. Ellison, Carmen McIntyre, Travis Moger, Lindsay Patterson, Chace Tavelli, David Waterstreet, Mahonri Williams
Science and Products
Characterizing Hydrologic and Geomorphic Processes in a Spring-Fed, Cold-Desert Headwater Stream
The role of natural versus human-influenced factors in sedimentation of Littlefield Creek, a small, high-desert creek in south-central Wyoming is currently unknown. In general, there is little empirical information about both hydrologic and geomorphic processes (together described as hydrogeomorphic) in these types of streams. To develop a better understanding of hydrogeomorphic processes, their...
Peak-Flow Frequency Analysis for Selected Montana Streamgages
Peak-flow frequency information is needed for flood-plain mapping, design of highway infrastructure, and many other purposes across Montana. The USGS Wyoming-Montana Water Science Center has an ongoing project working to update peak-flow frequency estimates at USGS streamgages across the state.
Peak-flow frequency analyses for selected streamgages in Wyoming, based on data through water year 2022 (ver. 1.1, July 2025) Peak-flow frequency analyses for selected streamgages in Wyoming, based on data through water year 2022 (ver. 1.1, July 2025)
The USGS Wyoming-Montana Water Science Center (WY–MT WSC) completed a report (Siefken and others, 2025) documenting methods for peak-flow frequency analysis following implementation of the Bulletin 17C guidelines. This data release, published in cooperation with the Wyoming Water Development Office, presents peak-flow frequency analyses for selected streamgages in Wyoming, based on data...
Streamflow, water quality, and energy development characteristics and water-quality trends for selected sites in the Green River and Muddy Creek drainage basins, southwestern Wyoming, water years 2006–16 Streamflow, water quality, and energy development characteristics and water-quality trends for selected sites in the Green River and Muddy Creek drainage basins, southwestern Wyoming, water years 2006–16
Energy resource development in southwestern Wyoming has been rapidly expanding since the early 2000s to include innovative technologies for extracting oil and gas and enhancing renewable energy. In response to concerns about the potential negative effects of energy development on natural resources, the Wyoming Landscape Conservation Initiative was created to implement a long-term...
Authors
Steven K. Sando, Cheryl A. Eddy-Miller, Roy Sando, Sara L. Caldwell Eldridge, Seth E. Younger, Haylie M. Brown
The influence of riparian zone grazing on channel stability in an arroyo The influence of riparian zone grazing on channel stability in an arroyo
The introduction of large herds of domesticated grazing animals by European immigrants in the late 19th century is one primary hypothesis used to explain the initiation of arroyo cutting in the American West. But studies designed to quantify the effects of grazing on watershed hydrology and sedimentation have had conflicting results that are often scale dependent. We used a before-and...
Authors
Jason S. Alexander, Cheryl A. Eddy-Miller, Jacob B. Stout, Haylie M. Brown
Suspended-sediment and phosphorus response in a fire-affected central Montana headwater catchment Suspended-sediment and phosphorus response in a fire-affected central Montana headwater catchment
Purpose Eutrophication and nuisance filamentous algal blooms (i.e. Cladophora) are increasingly common occurrences throughout much of the western United States. Wildfire may be contributing to the frequency and magnitude of algal blooms through excess sediment and nutrient loading to streams and rivers. Our objective was to evaluate the effects the 2021 Woods Creek Fire had on sediment...
Authors
Gregory D. Clark, Michael W. Suplee, Haylie M. Brown, Molly A. Moloney, Rodney R. Caldwell
Fluvial sediment dynamics in the Shoshone River and tributaries around Willwood Dam, Park County, Wyoming Fluvial sediment dynamics in the Shoshone River and tributaries around Willwood Dam, Park County, Wyoming
Sedimentation affects many of the aging reservoirs in the United States. Dams and water diversions from rivers have been central elements of infrastructure supporting agricultural irrigation in the arid and semiarid regions of the Western United States for more than a century. The Willwood Irrigation District diversion dam (hereafter referred to as “Willwood Dam”) in Park County, Wyoming...
Authors
Jason S. Alexander, Haylie M. Brown, Cheryl A. Eddy-Miller, Jason Burckhardt, Laura Burckhardt, Christopher A. Ellison, Carmen McIntyre, Travis Moger, Lindsay Patterson, Chace Tavelli, David Waterstreet, Mahonri Williams