cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5066/p96tx8ae
title: Bathymetry and Velocity Data from Surveys at Highway Bridges crossing the Missouri River in Kansas City, Missouri, in August 2019, August 2020, and October 2020

description: These data are high-resolution bathymetry (riverbed elevation) and depth-averaged velocities in ASCII format, generated from hydrographic and velocimetric surveys near highway bridge structures over the Missouri River in Kansas City, Missouri, in August 2019, as well as special surveys at two of the sites in August and October 2020 before and after installation of scour countermeasures. Hydrographic data were collected using a high-resolution multibeam echosounder mapping system (MBMS), which consists of a multibeam echosounder (MBES) and an inertial navigation system (INS) mounted on a marine survey vessel. Data were collected as the vessel traversed the river along planned survey lines distributed throughout the reach. Data collection software integrated and stored the depth data from the MBES and the horizontal and vertical position and attitude data of the vessel from the INS in real time. Data processing required computer software to extract bathymetry data from the raw data files and to summarize and map the information. Velocity data for the August 2019 surveys were collected using an acoustic Doppler current profiler (ADCP) mounted on a survey vessel equipped with a differential global positioning system (DGPS). Data were collected as the vessel traversed the river along planned transect lines distributed throughout the reach. Velocity data were processed using the Velocity Mapping Toolbox (Parsons and others, 2013), and smoothed using neighboring nodes. There are 12 zip files for 8 sites available for download containing the bathymetric data and depth-averaged velocities. The files follow the format of &quot;site-##_MissouriRiver_HWY#_YYYY-MM.zip&quot;, where &quot;site-##&quot; is the site number from 06 to 13, &quot;HWY#&quot; is the highway type and route number, and &quot;YYYY-MM&quot; is the survey date (year and month). The files for the 2019-08 surveys contain two comma-delimited text files, one with the bathymetry and uncertainty data and one with the depth-averaged velocity data, as well as associated metadata. The files for the 2020-08 and 2020-10 surveys before and after installation of scour countermeasures at sites 08 and 12 do not include velocity data, but contain only the comma-delimited bathymetry and uncertainty data for a smaller area near the main channel pier and associated metadata. Reference cited: Parsons, D.R., Jackson, P.R., Czuba, J.A., Engel, F.L., Rhoads, B.L., Oberg, K.A., Best, J.L., Mueller, D.S., Johnson, K.K., and Riley, J.D., 2013, Velocity Mapping Toolbox (VMT) A process and visualization suite for moving-vessel ADCP measurements: Earth Surface Processes and Landforms, v. 38, no. 11, p. 1244-1260., https://doi.org/10.1002/esp.3367
DOI: 10.5066/p92f1rou
title: Observed and modeled daily streamflow values for 74 U.S. Geological Survey streamgage locations in the Trinity and Mobile-Tombigbee River basins in the Southeast United States: 2000--2009

description: The data and R scripts contained in this data release are provided as support for a manuscript titled, "Copula theory as a generalized framework for flow-duration curve based streamflow estimates in ungaged and partially gaged catchments" (Worland and others, 2019) submitted to Water Resources Research. The dv_input.csv contains the measured daily streamflow values for 37 streamgages in the Mobile-Tombigbee River Basin, 4-digit hydrologic unit code (HUC4) 0316, and 37 gages in the Trinity River Basin, HUC4 codes 1201, 1202, 1203, and 1204. The coord_input.csv contains the coordinates and the basin area (squared meters) for the gages in each basin. The R scripts generate daily streamflow estimates using 16 different estimation methods. Additionally, the R scripts also provide a function for estimating leave-one-out cross validated correlations between sites using an ordinary kriging approach. The dv_output.csv files contains the predicted daily streamflow values using the 16 streamflow estimation methods.
DOI: 10.5066/p9aegxy0
title: Peak-streamflow trends and change-points and basin characteristics for 2,683 U.S. Geological Survey streamgages in the conterminous U.S.

description: This data release contains drainage basin characteristics and peak-streamflow trend and change-point results for 2,683 U.S. Geological Survey (USGS) streamgages in the conterminous U.S. Data include streamgage identification number, name, drainage area, latitude, longitude, percent urban land use, dam storage, streamgage classification, record completeness status, lag-1 autocorrelation, trend slopes and significance, peaks-over-threshold counts, and change point years and values for median and scale. Also included is an R script containing the Mann-Kendall trend test for three different null hypotheses of the serial structure of the time-series data: independence, short-term persistence, and long-term persistence.
DOI: 10.5066/p9irl3gv
title: Colorado River Mile System, Grand Canyon, Arizona

description: These data represent the centerline and measured increments at hundredths, tenths and whole miles, along the centerline of the Colorado River beginning at Glen Canyon Dam near Page, Arizona and terminating near the inflow s of Lake Mead in the Grand Canyon region of Arizona, USA. The centerline was digitized using Color Infra-Red (CIR) orthophotography collected in March 2000 as source information and a LiDAR-derived river shoreline representing 8,000 cubic feet per second (CFS)as the defined extent of the river. Every effort was made to follow the main flow of the river while keeping the line approximately equidistant from both shorelines. The centerline feature class has been created to more accurately map locations along the Colorado River downstream of the Glen Canyon Dam. River miles and river kilometers were developed from measurements along this line. The incremental point feature classes were derived from the centerline of the Colorado River datasets. Specifically, the points were generated from nodes extracted from the centerline endpoints of the tenth mile line feature class. The Grand Canyon Monitoring and Research Center (GCMRC) river mileage was cross-checked with commercially available river guides and always fell within one mile of the guides, usually corresponding within a half mile. Additionally, these data were subjected to internal review by GCMRC scientists and commercial boatmen with decades of river travel experience on the Colorado River. River Mile 0 was measured from the USGS concrete gage and cableway at Lees Ferry, Arizona -- as per the Colorado River Compact of 1922 -- with negative river mile numbers used in Glen Canyon and positive river mile numbers downstream in Marble and Grand Canyons. These data were updated in March 2015 using newer ortho-rectified imagery collected in May of 2009 and 2013, both at approximately 8,000 CFS. Due to extended drought conditions that have persisted in the U.S. Southwest, lake levels have dropped dramatically, especially at Lake Mead. A stretch of the Colorado River corridor that was part of Lake Mead in year 2000 has returned to a flowing river once again, and with a different channel that has not previously existed. All changes to the original centerline are downstream of River Mile 260 which is just upstream of Quartermaster Canyon in western Grand Canyon. New river miles and river kilometers were developed from this updated centerline.
DOI: 10.5066/f7ns0rz3
title: Input data and results of WRTDS models and seasonal rank-sum tests to determine trends in the quality of water in New Jersey streams, water years 1971-2011

description: This USGS data release represents the input data used to identify trends in New Jersey streams, water years 1971-2011 and the results of Weighted Regression on Time, Discharge, and Season (WRTDS) models and seasonal rank-sum tests. The data set consists of CSV tables and Excel workbooks of:

 trends_InputData_NJ_1971_2011: Reviewed water-quality values and qualifiers at selected stream stations in New Jersey over water years 1971-2011

 trends_WRTDS_AnnualValues_NJ_1971_2011: Annual concentrations and fluxes for each water-quality characteristic at each station from WRTDS models

 trends_WRTDS_Changes_NJ_1971_2011: Changes and trends in flow-normalized concentrations and fluxes determined from WRTDS models

 trends_SeasonalRankSum_results_NJ_1971_2011: Results of seasonal rank-sum tests to identify step trends between concentrations in the 1970s, 1980s, 1990s, and 2000s at selected stations on streams in New Jersey.

These data support the following publication:

Hickman, R.E., and Hirsch, R.M., 2017, Trends in the quality of water in New Jersey streams, water years 1971-2011: U.S. Geological Survey Scientific Investigations Report 2016-5176, 58 p., https://doi.org/10.3133/sir20165176.
DOI: 10.5066/f7057dfs
title: Seismically triggered landslides in the area above the San Fernando Valley

description: This inventory was originally created by Morton (1971) describing the landslides triggered by a sequence of earthquakes, with the largest being the M 6.6 San Fernando, California earthquake that occurred on 9 February 1971 at 14:00:41 UTC. Care should be taken when comparing with other inventories because different authors use different mapping techniques. This inventory includes landslides triggered by a sequence of earthquakes rather than a single mainshock. Please check the author methods summary and the original data source for more information on these details and to confirm the viability of this inventory for your specific use.

With the exception of the data from USGS sources, the inventory data and associated metadata were not acquired by the U.S. Geological Survey (USGS) and thus have not been reviewed for accuracy and completeness by the USGS. They are presented as part of this data series for convenience of the user only, as part of an effort to make published ground-failure inventories more accessible from a single aggregated site. No warranty, expressed or implied, is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
DOI: 10.5066/p9efdwzp
title: Assessment of water-quality in the California Sacramento-San Joaquin Delta during a North Delta directed flow action: August - October 2018

description: This report documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in the Sacramento-San Joaquin River Delta of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll . Data-collection cruises were conducted under three different environmental/flow conditions in August, September, and October 2018 that coincided with conditions prior to, during, and following a directed flow action or pulse of agricultural return water organized by the California Department of Water Resources and California Natural Resources Agency.
DOI: 10.5066/p9p4h3zx
title: Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2018

description: Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay River Input Monitoring (RIM) stations for the period 1985 through 2018. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the RIM watersheds. To determine the trend in loads, the annual load results are flow normalized to integrate out the year-to-year variability in river discharge. The trend in load is derived from the flow-normalized load timeseries and represents the change in load resulting from changes in sources, delays associated with storage or transport of historical inputs, and (or) implemented management actions. Four data tables are provided that describe nitrogen, phosphorus, and suspended-sediment conditions across the RIM: (1) Annual Loads, (2) Monthly Loads, (3) Trends in Annual Loads, and (4) Average Yield (mass per unit area). Additionally, essential WRTDS Input and Output files are provided.
DOI: 10.5066/p99ljjzz
title: Land Area in Coastal Louisiana (1932 to 2016) - Land Area Spatial Data - Multi-date Composites for Specific Years
DOI: 10.5066/f7639p1n
title: ADCP Data in Support of Water and Suspended-Sediment Flux Measurements at the Golden Gate, 2016-2017

description: Field observations of water and suspended-sediment fluxes at the Golden Gate were made over one ebb tide and one flood tide on three occasions: 1) 21-22 March 2016, following a large storm event that triggered the first flow into Yolo Bypass flood control structure since 2011; 2) 23 June of 2016, during a period of low freshwater inflow and 3) 27-28 February 2017, following several large storms of the wettest winter in northern California in recorded history. On each occasion, flux of water and suspended sediment were estimated using data from a boat-mounted acoustic Doppler current profiler. This instrument provided high-resolution velocity and acoustic backscatter (ABS) data at a cross-section ("transect") near the estuary-ocean boundary, approximately 1 km landward (east) of the Golden Gate Bridge. Discrete water samples collected in situ were analyzed for suspended-sediment concentration (SSC) and related to ABS to allow quantification of sediment concentrations and fluxes.
DOI: 10.5066/f71v5c3b
title: Total phosphorus and water flux at a restored hydrologic connection at Ottawa National Wildlife Refuge in 2013 and 2014

description: This tabular data set contains estimates of total phosphorus concentration and mass, as well as measurements of water discharge and volume at a diked wetland pool (Pool 2B) that was reconnected to a Lake Erie tributary (Crane Creek) via a water control structure in March 2011. Sampling occurred during 2013 and 2014. In addition, this data set contains evaluations of movement of total phosphorus and water through the reconnecting structure, frequency of changes in flow direction through the reconnecting structure, and dissolved oxygen measurements in the reconnected wetland pool.
DOI: 10.5066/p9u8c82v
title: Aqueous and Solid Phase Chemistry of Sequestration and Re-oxidation of Chromium in Experimental Microcosms with Sand and Sediment from Hinkley, CA

description: Cr(VI) contaminated groundwater at Hinkley is undergoing bioremediation using added ethanol as a reductant in a volume of the aquifer defined as the In-situ Reduction Zone (IRZ). This treatment effectively reduces Cr(VI) to Cr(III) which is rapidly sequestered by sorption to aquifer particle surfaces and by co-precipitation within iron or manganese bearing minerals forming in place as reduction proceeds. Successful mitigation of the extant Cr(VI) plume is projected to require 90 to 220 years, at which time ethanol loading will likely cease. This projection assumes that Cr(VI) removal is permanent and that no Cr(III) will oxidize back to Cr(VI) in the event of changing hydrological conditions resulting in oxygen rich water re-entering the IRZ. We undertook laboratory microcosm experiments to explore the process of reductive sequestration and the potential for re-oxidation. In reduction experiments, batch microcosms were prepared with materials from sites within the aquifer, up-gradient of the Cr(VI) regulatory plume. Control microcosms were prepared using cleaned quartz sand and iron (Fe)-coated sand. Unfiltered Mojave River groundwater and an added tracer of 50Cr were reacted with microcosm materials for two years. During this time, bio-reduction was stimulated by repeated additions of diluted ethanol to maintain reduced conditions within appropriate ranges; avoiding sulfate reducing or methanogenic conditions as much as possible while mimicking field conditions. To evaluate the potential for re-oxidation of Cr(III), additional batch microcosms of site materials and mixtures of Fe- and Mn-coated sand were first reduced for more than 1 year and subsequently exposed to air and allowed to oxidize for up to 2 years. Cr(VI) was released during oxidation of all materials. The amount of Cr(VI) released and when it was released varied among substrates. Our results showed that the nature and locus of Cr(III) sequestration influenced it's vulnerability to re-oxidation back to Cr(VI). This data release includes three tables in *.csv format with the preliminary experiment (preliminary.csv), reduction experiment (reduction.csv), and the oxidation experiment (oxidation.csv) along with a Google Earth file of the well sites (wells.kmz).
DOI: 10.5066/f7qj7ftf
title: Inventory of landslides triggered by the 2014 Ms 6.5 Ludian earthquake

description: This inventory was originally created by Xu and others (2014) describing the landslides triggered by the M 6.2 Sichuan-Yunnan-Guizhou Region, China earthquake, also known as the Ludian earthquake, that occurred on 3 August 2014 at 08:30:13 UTC. Care should be taken when comparing with other inventories because different authors use different mapping techniques. This inventory also could be associated with other earthquakes such as aftershocks or triggered events. Please check the author methods summary and the original data source for more information on these details and to confirm the viability of this inventory for your specific use.

With the exception of the data from USGS sources, the inventory data and associated metadata were not acquired by the U.S. Geological Survey (USGS) and thus have not been reviewed for accuracy and completeness by the USGS. They are presented as part of this data series for convenience of the user only, as part of an effort to make published ground-failure inventories more accessible from a single aggregated site. No warranty, expressed or implied, is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
DOI: 10.5066/f7t72fhb
title: Bathymetry and Backscatter from 2013 Interferometric Swath Bathymetry Systems Survey of Columbia River Mouth, Oregon and Washington

description: High-resolution swath bathymetry and backscatter were collected in the Mouth of the Columbia River (MCR) as part of the Office of Naval Research (ONR) funded River and Inlet Dynamics Experiment in 2013. The goal of the U.S. Geological Survey's component of the research was to evaluate the various hydrodynamic and sediment transport processes in the Columbia River estuary entrance using a combination of field observations coupled with Delft3D model simulations. The MCR is a dynamic estuary inlet with large waves, large tidal currents, and a significant river discharge, resulting in a strong estuarine circulation. The field component of the study consisted of an intensive in-situ experiment with bottom-mounted instrument tripods, mobile instrument platforms, GPS-equipped drifters, and collection of spatial maps of bed sediment grain-size and swath surveys of bathymetry and backscatter. The swath bathymetric surveys revealed ubiquitous seafloor bed forms throughout the estuary entrance. The bathymetric data are used to set bottom boundary conditions for the numerical models of hydrodynamics and to explore the characteristics of the seafloor roughness. Bottom roughness is an important boundary condition in hydrodynamic models of shallow environments and bed form size and roughness are poorly predicted. The purpose of this data release is to make available the methods, the meta-data, and the processed bathymetry and backscatter data from the May 13-25, 2013 Interferometric swath survey of the Mouth of the Columbia River.
DOI: 10.5066/p9fv5lg5
title: Gravity data of the Hinkley area, southern California

description: This dataset contains gravity data collected in the HInkley area in the Mojave Desert of southern California.
DOI: 10.5066/f7445jpq
title: Compilation of BLM Monitoring Reports Assessing Post Wildfire Seeding of Rangelands, 2001-2009

description: Post-fire rehabilitation seeding in the U.S. Intermountain West, primarily conducted by the Bureau of Land Management, is designed to reduce the risk of erosion and weed invasion while increasing desirable plant cover. Seeding effectiveness is typically monitored for three years following treatment, after which a closeout report is prepared. We evaluated 220 third-year closeout reports describing 214 aerial and 113 drill seedings implemented after wildfires from 2001 through 2006. Each treatment was assigned a qualitative success rating of good, fair, poor, or failure based on information in the reports. Seeding success varied by both treatment (aerial or drill) and year. Aerial seedings were rated 13.6% good, 18.3% fair, 29.6% poor, and 38.5% failure. Drill seedings were rated as 30.1% good, 24.8% fair, 23.0% poor, and 22.1% failure. Logistic regression analysis found that aerial seedings were more successful with increasing elevation, long-term average precipitation, and precipitation received in the first and third years following treatment. Drill seeding success was best explained by elevation only, suggesting that these treatments are less sensitive to long-term average and precipitation received after treatment than aerial seedings. We found monitoring reports did not report seeding success consistently using quantiative objectives, control areas to proived adequate comparisons, and did not provide maps, making them difficult to assess spatially. Providing additional information in monitoring reports about important factors that can influence seeding success such as pre-fire vegetation would be useful for the creation of a decision analysis tool to aid land managers who are confronted with whether or not to perform post-fire rehabilitation treatments given limited resources and budgets.
DOI: 10.5066/p93bay64
title: A spatially and temporally intensive sampling study of benthic community and bivalve metrics in the Sacramento-San Joaquin Delta, 2007-18

description: Phytoplankton is an important and limiting food source in the Sacramento-San Joaquin Delta and San Francisco Bay; the decline of phytoplankton biomass is one possible factor in the pelagic organism decline and specifically in the decline of the protected delta smelt. The bivalves Corbicula fluminea and Potamocorbula amurensis (hereafter Corbicula and Potamocorbula, respectively) have been shown to control phytoplankton biomass in several locations throughout the system, and their distribution and population dynamics are therefore of great interest. As one element of the Department of Water Resources' (DWR) and the Bureau of Reclamation's (BOR) Environmental Monitoring Program (EMP), the Generalized Random Tessellation Stratified (GRTS) program examines the spatial and temporal extent of both Corbicula and Potamocorbula control on phytoplankton. The GRTS benthic monitoring program is one element of DWR's and BOR's EMP wherein the impact of water project operations on the estuary are determined. These impacts are determined by changes in benthic fauna presence, abundance and distribution of the benthos associated with physical factors in the estuary, and the detection of newly introduced species in the estuary. DWR expanded their benthic monitoring program to include spatially intensive sampling (GRTS) in spring and fall of every year beginning in 2007. The GRTS program samples 175 benthic stations (fifty stations that are monitored every year and 125 randomly selected new stations that are changed yearly) throughout the Delta and northern San Francisco Bay in one week in May and October.