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) Study site reconnaissance will include searching the literature for previous work performed in the region, searching online databases for site information and data from previous studies, using historic maps and imagery to characterize the quality of proposed sites for flood and lake level reconstructions, and
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https://www.usgs.gov/centers/florence-bascom-geoscience-center/science/natural-drought-and-flood-histories-lacustrine
) Study site reconnaissance will include searching the literature for previous work performed in the region, searching online databases for site information and data from previous studies, using historic maps and imagery to characterize the quality of proposed sites for flood and lake level reconstructions, and

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https://www.usgs.gov/programs/ecosystems-land-change-science-program/science/natural-drought-and-flood-histories
Methods: Preliminary study site research will include searching the literature for previous work performed in the region, searching online databases for site information and data from previous studies, using historic maps and imagery to characterize the quality of proposed sites for flood and lake level

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https://www.usgs.gov/centers/colorado-water-science-center/science/water-energy-and-biogeochemical-budgets-webb-loch
Analyses of temporal and spatial variations in the depth and water content of seasonal snowpacks was another area of extensive research at the Loch Vale WEBB site

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https://www.usgs.gov/programs/environmental-health-program/science/synthesis-mercury-distribution-and-bioaccumulation
This synthesis project resulted in the compilation, analysis, and interpretation of spatial and temporal patterns of Hg and MeHg occurrence in air, soil, vegetation, sediments, fish, and wildlife across western North America, which provided the most comprehensive evaluation to date (2016) on the distribution of Hg and

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https://www.usgs.gov/publications/some-climatic-indicators-period-ad-1200-1400-new-mexico
This work is a preliminary attempt to obtain independent evidence from pollen concerning the probable nature of the vegetation and thus the climate in a period known to be characterized by narrow tree rings

Food Web Changes Dampen Expected Reductions in Lake Trout Mercury Levels

https://www.usgs.gov/programs/environmental-health-program/science/food-web-changes-dampen-expected-reductions-lake
strategies to reduce exposure levels for fish and people who consume them

A Holocene paleosecular variation from 14C-dated volcanic rocks in

https://www.usgs.gov/publications/a-holocene-paleosecular-variation-14c-dated-volcanic-rocks-western-north-america
western North America | U.S. Geological Survey Here's how you know Here's how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock

Age of the Morton and Montevideo gneisses and related rocks

https://www.usgs.gov/publications/age-morton-and-montevideo-gneisses-and-related-rocks-southwestern-minnesota
, southwestern Minnesota | U.S. Geological Survey Here's how you know Here's how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A

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https://www.usgs.gov/centers/az-water/science/lower-colorado-river-monthly-data-report
Here's how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock () or https:// means you’ve safely connected to the .gov website.