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Model Archive: Simulation of Rhodamine Dye Concentration and Larval Drift, Kootenai River, Idaho
This archive contains results of lagrangian particle-tracking (LPT) simulations of both the dispersal of rhodamine dye and larval drift. The LPT model is a research effort and the simulations here provide some of the first experimental validation of the results for dispersal of a conservative constituent (Rhodamine WT-20). The larval drift simulations however have not been validated and...
Average Annual Loads and Yields of Nitrate and Phosphorus from Illinois Watersheds (HUC8s) for Three Periods between 1997 and 2022
This data release supports "Diverging trends in nitrate and phosphorus loads and yields across Illinois watersheds, 1997–2022" (Kamrath and others, 2024) and the State of Illinois's Nutrient Loss Reduction Strategy (NLRS; Illinois Environmental Protection Agency [IEPA] and others, 2015). This data release contains estimates of incremental nitrate (NO3) and total phosphorus (TP) loads and...
Future Projections of the Western U.S. Montane Snowpack from 2016-2095
Data includes monthly-average projected changes to climate for a 23-member ensemble of CMIP6 SSP2-4.5 GCMs downscaled using NASA’s Land Information System. Average snow outputs are generated using these climate projections for 20-year periods between 2016 and 2095. More information on this data, and comparisons versus various community snow projections in mountainous regions can be found...
Modeling the Impacts of Sand Placement Strategies on Barrier Island Evolution in a Semi-enclosed Bay System: Model Input and Results
The impacts of five proposed restoration alternatives at Little Dauphin Island, Alabama (AL) were assessed using process-based numerical models to simulate annual scale sediment transport and storm-driven morphological change. The five restoration alternatives include a no-action scenario representing a continuous island (R0), a tidal inlet channel realignment (R1), a sand spit (sand...
Coastal Multibeam Bathymetry and Backscatter Data Collected in August 2024 From Breton Island, Louisiana
As part of the restoration monitoring component of the Deepwater Horizon early restoration project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS–SPCSMC), conducted a bathymetric survey near Breton Island, Louisiana (LA). During this study, multibeam bathymetry and acoustic backscatter data were collected...
Data on tiger salamander body mass, behavioral activity, and insecticide residues
We evaluated potential effects of deltamethrin and fipronil on tiger salamander (Ambystoma mavortium) body mass, behavioral activity, and insecticide tissue residues. Insecticides were applied at realistic concentrations in mesocosms mimicking prairie dog burrows, which are used as refuge by salamanders under natural conditions. Treatments included (1) deltamethrin dust, (2) prairie dog...
Walrus Haulout Audio Recordings Near Point Lay 2024
This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...
Water Level, Water Temperature, and Vegetation Biomass at the Nisqually River Delta, WA
This dataset contains water level, water temperature, and vegetation data from 12 locations within the Nisqually River Delta, Washington from 2010 to 2015. This dataset was part of a larger monitoring effort to document hydrological and vegetation changes throughout the Nisqually River Delta following large scale estuarine restoration (dike removal) in 2009.
Greater Sage-Grouse Survival Encounter Histories and Counts in Association with Precipitation, Temperature, and Drought in the Great Basin, USA
A suite of tables filled with greater sage-grouse (Centrocercus urophasianus; hereafter sage-grouse) survival data and environmental covariate values, extracted to sage-grouse nest, brood, and general locations, as well as lek locations. We quantified 8 indicators of temperature and/or moisture conditions across time spans representing lags of 0-1.5 years, while accounting for other...
Standardized Precipitation Evapotranspiration Index (SPEI) Projections for the Contiguous United States Based on the CMIP5 MACAv2-METDATA Downscaled Climate Dataset
The dataset consists of projections of 1-12 months Standardized Precipitation Evapotranspiration Index (SPEI) between 1950-2099 for the contiguous United States from 20 climate models and 2 emission scenarios at a 4km spatial resolution. The SPEI dataset was developed using the SPEI package in R (Beguería & Vicente-Serrano, 2023). SPEI quantifies standardized departures in the balance...
At-site flood frequency estimates for 64 urban streamgages in Alabama and Mississippi using data through water year 2024
This dataset contains site information and results of flood frequency analysis for 64 urban streamflow gaging stations (streamgages) operated by the U.S. Geological Survey (USGS) in Alabama and Mississippi. Site information and annual peak-flow data from the 1885 - 2024 water years were obtained from the USGS National Water Information System (NWIS) database (U.S. Geological Survey, 2025...
Radiocarbon ages, whole-rock chemistry, and electron probe microanalysis of lavas (1877, 1832, 1823, Kealaalea Hills, and Keanakākoʻi Tephra periods) from Kīlauea's summit and Southwest Rift Zone, Island of Hawaiʻi
This dataset includes radiocarbon ages, wavelength dispersive X-ray fluorescence (WD-XRF) major-oxide and trace-element whole-rock analyses, and glass, olivine, and pyroxene analyses by electron microprobe (EPMA) of spatter and lava samples from the summit and Southwest Rift Zone of Kīlauea volcano, Island of Hawaiʻi. All of the radiocarbon ages were analyzed by DirectAMS in Bothell...