Anya Leach
Anya C. Leach is a Physical Scientist in the Watersheds and Fluvial Systems Section at the Washington Water Science Center.
Anya studies groundwater-surface water interactions, thermal dynamics, and sediment transport within local and regional stream networks. She is interested in the impacts of climate change, wildfire, and land use on the thermal and sediment regimes within a fluvial system.
Professional Experience
Physical Scientist, USGS Washington Water Science Center (Tacoma, WA) 2022 - Present
Research Technician, Coastal Studies Institute, East Carolina University (Outer Banks, NC) 2020 - 2022
Research Assistant, Great Lakes Research Center, Michigan Technological University (Houghton, MI) 2017 - 2019
Education and Certifications
M.S. Environmental Engineering, Michigan Technological University, 2019
B.S. Physics, West Virginia University, 2015
Science and Products
Sediment and dissolved oxygen data to support fine sediment intrusion in Chinook salmon spawning gravels, Sauk River, Washington
This Data Release contains supporting data to evaluate fine sediment infiltration into gravels in identified locations of Chinook spawning habitat at three sites on the Sauk River, located in western Washington. Fine sediment infiltration into the river substrate that salmonid fish species use to spawn has been shown to increase mortality during the incubation and pre-emergence phase when salmonid
Stream Temperature Models of White River Watershed, Mount Rainier National Park, Washington
Water temperature is an important characteristic of stream conditions with implications for water quality and stream dwelling organisms. This Data Release contains spatial stream network (SSN) objects and R scripts to run SSN models to predict mean monthly stream temperature and 7-day average daily maximum (Max7DAD) during August and September in the White River watershed within Mount Rainier Nati
Water Temperature Dynamics in the Quillayute River Basin, Washington, 2021 - 2023
The Quillayute River Basin in northwestern Washington consists of the Quillayute River and the river systems of its major tributaries, the Dickey, Sol Duc, and Bogachiel Rivers. With a drainage area of 629 square miles, the Quillayute River Basin provides important habitat for 23 distinct runs of anadromous steelhead and salmon, representing one of the largest and most productive watersheds on the
Quantifying fine sediment infiltration in spawning gravel used by Chinook salmon (Oncorhynchus tshawytscha) in the Sauk River Basin, Washington, 2018–21
Fine sediment can infiltrate into river substrate that salmonid fish species (Oncorhynchus spp.) use to spawn. High levels of sediment infiltration can increase egg-to-fry mortality, which corresponds to the period when salmonids are still residing in the subsurface gravels. This study quantifies fine sediment infiltration of Chinook salmon (Oncorhynchus tshawytscha) spawning habitat during the eg
Authors
Kristin L. Jaeger, Scott W. Anderson, Anya C. Leach, Scott T. Morris
Spatial variability of water temperature within the White River basin, Mount Rainier National Park Washington
Water temperature is a primary control on the occurrence and distribution of cold-water species. Rivers draining Mount Rainier in western Washington, including the White River along its northern flank, support several cold-water fish populations, but the spatial distribution of water temperatures, particularly during late-summer base flow between August and September, and the climatic, hydrologic,
Authors
Andrew Gendaszek, Anya Clare Leach, Kristin Jaeger
Science and Products
Sediment and dissolved oxygen data to support fine sediment intrusion in Chinook salmon spawning gravels, Sauk River, Washington
This Data Release contains supporting data to evaluate fine sediment infiltration into gravels in identified locations of Chinook spawning habitat at three sites on the Sauk River, located in western Washington. Fine sediment infiltration into the river substrate that salmonid fish species use to spawn has been shown to increase mortality during the incubation and pre-emergence phase when salmonid
Stream Temperature Models of White River Watershed, Mount Rainier National Park, Washington
Water temperature is an important characteristic of stream conditions with implications for water quality and stream dwelling organisms. This Data Release contains spatial stream network (SSN) objects and R scripts to run SSN models to predict mean monthly stream temperature and 7-day average daily maximum (Max7DAD) during August and September in the White River watershed within Mount Rainier Nati
Water Temperature Dynamics in the Quillayute River Basin, Washington, 2021 - 2023
The Quillayute River Basin in northwestern Washington consists of the Quillayute River and the river systems of its major tributaries, the Dickey, Sol Duc, and Bogachiel Rivers. With a drainage area of 629 square miles, the Quillayute River Basin provides important habitat for 23 distinct runs of anadromous steelhead and salmon, representing one of the largest and most productive watersheds on the
Quantifying fine sediment infiltration in spawning gravel used by Chinook salmon (Oncorhynchus tshawytscha) in the Sauk River Basin, Washington, 2018–21
Fine sediment can infiltrate into river substrate that salmonid fish species (Oncorhynchus spp.) use to spawn. High levels of sediment infiltration can increase egg-to-fry mortality, which corresponds to the period when salmonids are still residing in the subsurface gravels. This study quantifies fine sediment infiltration of Chinook salmon (Oncorhynchus tshawytscha) spawning habitat during the eg
Authors
Kristin L. Jaeger, Scott W. Anderson, Anya C. Leach, Scott T. Morris
Spatial variability of water temperature within the White River basin, Mount Rainier National Park Washington
Water temperature is a primary control on the occurrence and distribution of cold-water species. Rivers draining Mount Rainier in western Washington, including the White River along its northern flank, support several cold-water fish populations, but the spatial distribution of water temperatures, particularly during late-summer base flow between August and September, and the climatic, hydrologic,
Authors
Andrew Gendaszek, Anya Clare Leach, Kristin Jaeger