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Freshness: newest result fetched 27 d ago · median age of these results 27 d · 7 of 30 carry a fetch time

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https://www.usgs.gov/faqs/how-can-a-1000-year-rainfall-not-result-a-1000-year-flood
gov website belongs to an official government organization in the United States

Why do the values for the 100-year flood seem to change with every flood

https://www.usgs.gov/faqs/why-do-values-100-year-flood-seem-change-every-flood
The estimates of the flood quantiles are calculated using actual data collected at a site

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https://www.usgs.gov/mission-areas/water-resources/science/usgs-flood-information
The white pipe on the left houses the data loggers for the streamgage at this site

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https://www.usgs.gov/faqs/what-a-1000-year-flood
gov website belongs to an official government organization in the United States

Does an increase in the 100-year flood estimate originate from climate

https://www.usgs.gov/faqs/does-increase-100-year-flood-estimate-originate-climate-or-land-use-change
gov website belongs to an official government organization in the United States

Areas of Concern: Effects of Contaminants of Emerging Concern on Avian

https://www.usgs.gov/special-topics/great-lakes-restoration-initiative/science/areas-concern-effects-contaminants
The source of the PFASs at that location were a former air force base which conducted extensive fire-fighting training exercises at that site

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https://www.usgs.gov/special-topics/water-science-school/our-water-our-lives-floods
The site colors indicate the level of flooding – please see the Legend tab in the top blue header for details

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https://www.usgs.gov/programs/VHP/volcano-updates
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/media/audio/magnitude-89-near-east-coast-japan
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/centers/alaska-science-center/science/alaska-earthquake-and-tsunami-hazards
This site provides important links to a number of hazard related internet sites that provide important

USGS Response to April 2026 Michigan and Wisconsin Floods | U.S.

https://www.usgs.gov/centers/upper-midwest-water-science-center/news/usgs-response-april-2026-michigan-and-wisconsin
By late April, teams had completed 110 site visits in Michigan and 167 in Wisconsin, performing high‑water streamflow measurements at flooded monitoring sites and evaluating storm‑related damage to equipment

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https://www.usgs.gov/observatories/hvo/science/monitoring-earthquakes-hawaii
This type of seismometer is significantly more expensive than other options and is more sensitive to local site conditions

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https://www.usgs.gov/media/audio/hurricanes-and-extreme-storms-coastal-hazards-assessments-and-changes
So let your cooler head prevail—make tracks to www

Advanced Quantitative Precipitation Information System Enhances Flood

https://www.usgs.gov/programs/cmhrp/news/advanced-quantitative-precipitation-information-system-enhances-flood
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/programs/environmental-health-program/science/beyond-microcystins-a-new-look-cyanotoxins-lake-erie
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/centers/washington-water-science-center/science/coal-transport
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/special-topic/water-science-school/science/why-ocean-salty
By some estimates, if the salt in the ocean could be removed and spread evenly over the Earth's land surface it would form a layer more than 500 feet (166 meters) thick, about the height of a 40-story office building (Source: NOAA)

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https://www.usgs.gov/centers/new-york-water-science-center/news
To learn more about USGS’s role providing science to decision makers before, during and after Ida, visit https://www

USGS looks back 2,000 years to study the relationship between hurricanes

https://www.usgs.gov/news/featured-story/usgs-looks-back-2000-years-study-relationship-between-hurricanes-and-climate
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/staff-profiles/keith-a-loftin
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/centers/pcmsc/science/global-seabed-mineral-resources
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/science/science-explorer/climate/droughts-and-climate-change
gov website belongs to an official government organization in the United States

What a Super El Niño could mean for Alaska’s seabirds, salmon, and

https://www.usgs.gov/mission-areas/ecosystems/news/what-a-super-el-nino-could-mean-alaskas-seabirds-salmon-and-seas
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/centers/ny-water/science/geospatial-applications
gov website belongs to an official government organization in the United States

Mercury Concentrations in Seston, Mussels, Water, Sediments, and

https://www.usgs.gov/data/mercury-concentrations-seston-mussels-water-sediments-and-preyfish-lake-huron-2022
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/programs/environmental-health-program/science/decoding-harmful-algal-blooms-unraveling-mystery
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/centers/new-york-water-science-center/software
gov website belongs to an official government organization in the United States

Mercury Concentrations in Waters, Seston, Mussels, Sediment, and Prey

https://www.usgs.gov/data/mercury-concentrations-waters-seston-mussels-sediment-and-prey-fish-lake-ontario-2023
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/media/videos/magnitude-92-1964-great-alaska-earthquake
gov website belongs to an official government organization in the United States

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https://www.usgs.gov/media/videos/1964-quake-great-alaska-earthquake
gov website belongs to an official government organization in the United States