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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A Method for High Performance Liquid Chromatography Analysis of Volatile Fatty Acids in Water A Method for High Performance Liquid Chromatography Analysis of Volatile Fatty Acids in Water
A method was developed to measure the presence and concentration of the organic volatile fatty acids (VFA) formate, malate, lactate, acetate, and propionate in aqueous samples using high performance liquid chromatography (HPLC) and ultraviolet absorbance detection. This dataset includes a method detection limit (MDL) study, along with appropriate quality control samples, used to verify...
Compilation of actual evapotranspiration and vegetation indices along critical riparian zones on the Navajo Nation from 2013-2023 Compilation of actual evapotranspiration and vegetation indices along critical riparian zones on the Navajo Nation from 2013-2023
These data were compiled for monitoring riparian zone trends and changes in the Navajo Nation as part of a study to document riparian ecosystem health and its water use in support of potential restoration efforts. The objective of our study was to monitor the short and medium-term effects on the riparian vegetation in relation to evapotranspiration changes, drought, and other...
Geospatial data, flood-frequency analysis, and surface-water model archive for streamflow extents and hydraulic characteristics of Meadow Valley Wash at Stuart Ranch, near Rox, Nevada Geospatial data, flood-frequency analysis, and surface-water model archive for streamflow extents and hydraulic characteristics of Meadow Valley Wash at Stuart Ranch, near Rox, Nevada
This U.S. Geological Survey data release consists of multiple datasets used to simulate the streamflow extents and hydraulic characteristics of Meadow Valley Wash at Stuart Ranch near Rox, Nevada. Streamflow extents equal the maximum area of flow inundation and were estimated using a two-dimensional (2D) hydraulic model. The modeled extents represent baseflow and six annual exceedance
Carbonate Budgets, Structure-from-Motion Products, and Topographic Complexity Measurements From Restored and Non-restored Areas of Coral Reefs in the Lower Florida Keys Carbonate Budgets, Structure-from-Motion Products, and Topographic Complexity Measurements From Restored and Non-restored Areas of Coral Reefs in the Lower Florida Keys
During the summers of 2022 and 2023, U.S. Geological Survey (USGS) researchers conducted underwater surveys aimed at quantifying the impact that past coral restoration by Mote Marine Laboratory had on the reef-accretion process. The surveys were conducted along paired transects representing restored and non-restored areas of eight offshore reefs and three patch-reef sites in the Lower...
Diver-Based Structure-from-Motion Imagery From Coral Reef Restoration Surveys in the Lower Florida Keys: July 2022 and July 2023 Diver-Based Structure-from-Motion Imagery From Coral Reef Restoration Surveys in the Lower Florida Keys: July 2022 and July 2023
During the summers of 2022 and 2023, U.S. Geological Survey (USGS) researchers conducted underwater photographic surveys aimed at quantifying the impact that past coral restoration by Mote Marine Laboratory had on the reef-accretion process. A total of 39,840 non-georeferenced diver-based images were collected. The surveys were conducted along paired transects (approximately 10x2 meter...
Per- and polyfluoroalkyl substances (PFAS) and wastewater indicator compounds measured in polar organic chemical integrative samplers (POCIS), and cyanotoxin concentrations measured in solid phase adsorption toxin trackers (SPATTs), in the lower Columbia Per- and polyfluoroalkyl substances (PFAS) and wastewater indicator compounds measured in polar organic chemical integrative samplers (POCIS), and cyanotoxin concentrations measured in solid phase adsorption toxin trackers (SPATTs), in the lower Columbia
This data release contains the analytical results of three contaminant classes in water using two types of passive sampling devices. Samples were collected at eight sites in the lower Columbia River and two sites in the lower Willamette River in Oregon and Washington. A Polar Organic Compound Integrating Sampler (POCIS) and a Solid-Phase Adsorption Toxin Tracker (SPATT) sampler were...