Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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Elemental concentrations in biofilm and bed sediment collected from streams in the Clark Fork Basin, Montana, July 2023 (ver. 1.1, March 2026) Elemental concentrations in biofilm and bed sediment collected from streams in the Clark Fork Basin, Montana, July 2023 (ver. 1.1, March 2026)
This data release includes laboratory analyses for biofilm and bed-sediment samples collected from streams in the Clark Fork Basin, spanning from Butte to near Missoula, Montana. Samples were collected by the U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency as part of a long-term monitoring program. Biofilm samples were collected once at 19 sites...
Geochemical and isotopic data for the Mountain Pass Intrusive Suite, California Geochemical and isotopic data for the Mountain Pass Intrusive Suite, California
The dataset includes .csv spreadsheets which provide whole rock geochemical data for the alkaline silicate rock and carbonatite rock samples for the Mountain Pass Intrusive Suite that were analyzed as part of this study, as well as whole rock Rb-Sr and Sm-Nd isotopic data for whole rock alkaline silicate samples. The .csv files containing this data are associated with individual data...
Landslide susceptibility modeling results and maps covering the northwestern, northeastern, southern, and southeastern parts of Minnesota, USA Landslide susceptibility modeling results and maps covering the northwestern, northeastern, southern, and southeastern parts of Minnesota, USA
In unconsolidated glacial sediments and exhumed bedrock of Minnesota, USA, landslides may occur on low-relief steep slopes generated by post-glacial fluvial network development and drainage of glacial lakes. As part of an investigation to understand the link between various environmental variables, post-glacial landscape development, and a previously mapped landslide inventory, we...
MODPATH6 datasets using MODFLOW and SEAWAT input for development of groundwater contributing areas for estimating low-flow statistics for the Plymouth-Carver aquifer area and Cape Cod, Massachusetts MODPATH6 datasets using MODFLOW and SEAWAT input for development of groundwater contributing areas for estimating low-flow statistics for the Plymouth-Carver aquifer area and Cape Cod, Massachusetts
Existing simulated groundwater head and water-budget output files from MODFLOW models for the Plymouth-Carver region (Masterson and others, 2009), the Hyannis Ponds Cape model (LeBlanc and others, 2019), and a SEAWAT model of lower Cape Cod (Masterson, 2004) were used in a new MODPATH version 6 (MP6) (Pollock, 2012) particle-tracking analyses. In the MODPATH6 analyses, endpoints...
Lower Salinas Valley Hydrologic Models: Input Inflow Data Lower Salinas Valley Hydrologic Models: Input Inflow Data
This dataset provides time series for the ungaged watershed inflows and associated inflow points for the Lower Salinas Valley Hydrologic Models (SVHM), including the Salinas Valley Integrated Hydrologic Model (SVIHM) and the Salinas Valley Operational Model (SVOM). Monthly outflows from watersheds that do not have gages that surround the Salinas River Valley are used in the Lower Salinas...
Daily twelve-digit hydrologic unit code aggregations of snow water equivalent, soil moisture, and actual evapotranspiration estimates from the National Hydrologic Model Precipitation Runoff Modeling System forced with CONUS404-BA Daily twelve-digit hydrologic unit code aggregations of snow water equivalent, soil moisture, and actual evapotranspiration estimates from the National Hydrologic Model Precipitation Runoff Modeling System forced with CONUS404-BA
This data release contains three variables from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System (NHM-PRMS) version 1.1 modeling application forced with CONUS404-BA (Markstrom and others, 2024) from January 1st, 1980 through September 25th, 2021 that are summarized to a twelve-digit hydrologic unit code for the spatial extent of the conterminous...