Filters: partyWithName: Christopher P Konrad (X) > partyWithName: Water Resources (X) > Categories: Data (X)

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Trends in annual peak streamflow quantiles for 2,683 U.S. Geological Survey streamgages in the conterminous United States Measures used to assess trends in the 10th, 50th, and 90th quantiles of annual peak streamflow from 1916-2015 at 2,683 U.S. Geological Survey stations and within 191 4-digit HUCs in the conterminous United States. Linear quantile regression was applied to the selected quantiles of log-transformed annual peak streamflow to represent trends for a range of flood frequencies from small, common floods to large, infrequent floods. Comparative trends in pairs of quantiles were characterized as coherent, convergent, or divergent by comparing the slopes of linear quantile regression equations. Categories: Data; Tags: Alabama, Arizona, Arkansas, California, Colorado, All tags... Connecticut, Conterminous United States, Delaware, District of Columbia, Florida, Georgia, Hydrology, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vermont, Virginia, Washington, Water Resources, West Virginia, Wisconsin, Wyoming, drought, floods, regression analysis, streamflow, surface water (non-marine), Fewer tags Non-linear baseflow separation model with parameters and results (ver. 2.0, October 2022) This data release provides source code and an R workspace with functions comprising a non-linear baseflow separation model, calibrated values of parameters and estimates of the baseflow component of daily streamflow at selected streamflow gages. Parameter values were determined by calibration of the model. Estimates of the baseflow component include daily values and the total baseflow as a fraction of streamflow for the analysis period. The file 'run_bf_sep.zip' in the directory 'Nonlinear Baseflow Model Source Code, Functions, and Scripts" has a complete set of model functions, parameters for 13,208 USGS streamflow gages, and a script to run the model. Instructions and software requirements for running the model... Categories: Data, Data Release - Revised; Tags: USGS Science Data Catalog (SDC), United States, baseflow, hydrograph separation, mathematical modeling, All tags... streamflow, Fewer tags Basin characteristics and travel time metrics for 100 sites in the southeastern United States The dataset has basin characteristics (drainage area, land use, and reservoir storage), parameters for a relation between streamflow and velocity, and travel time metrics at 100 gaged sites in the southeastern United States. Categories: Data; Tags: Hydrology, Land Use Change, USGS Science Data Catalog (SDC), United States, Water Quality, All tags... river systems, streamflow, Fewer tags Nonlinear Baseflow Model Parameters for USGS and other Agency Gages (ver. 2.0, October 2022) Site-specific parameters for a non-linear baseflow separation model determined by automated calibration to maximize baseflow. The file "bf_param_usgs.csv" has parameter values for 13,208 sites where USGS operated a streamflow gage and calculated daily streamflow for at least 300 days from water year 1981 to 2020. The file "bf_param_wa_ecy.csv" has parameter values for 41 sites where the Washington Department of Ecology operated a streamflow gage from water year 1991 to 2019. The parameters may need to be re-calibrated at a site for some applications. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Longitudinal profile and off-channel habitats of the lower Cedar River, Washington Field survey of the longitudinal profile and off-channel habitats (side channels and alcoves) of the lower Cedar River from Landsburg to Renton, WA were conducted in 2010 and 2013 respectively. The longitudinal profile is provided as an ASCII text file with fields delimited by commas. Digital maps with the locations of off-channel habitats are provided as ArcGIS shapefiles. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Cedar River, King County, Washington, Geomorphology, USGS Science Data Catalog (SDC), Water Resources, All tags... aquatic habitats, fluvial geomorphology, Fewer tags Attributes related to sediment supply, transport capacity, and bed material of 97 streams in the Midwestern U.S. (2013) Physical attributes of 97 streams in the Midwestern US characterizing sediment supply, sediment transport capacity, and stream bed material. Attributes include basin characteristics compiled with geographic information system and statistical summaries of field measurements of channel form, bed material, and suspended sediment. Data were used by Konrad and Gellis, 'Factors influencing fine sediment on stream bed in the Midwestern US' (manuscript in review) to develop regression models of fine sediment in Midwestern streams. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Midwestern United States, USGS Science Data Catalog (SDC), fine sediment, fluvial geomorphology, stream quality Baseflow Time Series for Selected USGS Gages (ver. 2.0, October 2022) Daily estimates of baseflow derived from a non-linear, baseflow separation model. The file "baseflow_western_washington.csv" has daily baseflow estimates for 268 sites in western Washington for the period from water year 1981 to 2020 used for estimating groundwater recharge in lowland areas. The file "baseflow_rsqa.csv" has daily baseflow estimates for 462 sites that were sampled as part of the US Geological Survey Regional Stream Qualtiy Assessment (RSQA). Values are only provided for days when water samples were collected. Missing values indicate gaps in the streamflow record. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Water-quality and stream-habitat metrics calculated for the National Water-Quality Assessment Program's Regional Stream Quality Assessment conducted in the southeast United States in support of ecological and habitat stressor models, 2014 This data release includes metrics from the Regional Stream Quality Assessment (RSQA) from the Southeast Region for habitat stressors related to water-quality and habitat substrate. The goals of RSQA are to characterize multiple water-quality factors that are stressors to aquatic life ‐ contaminants, nutrients, sediment, and streamflow alteration – and to develop a better understanding of the relation of these stressors to ecological conditions in streams throughout the region. In order to characterize water-quality variables and stream-habitat measurements as an aggregation of multiple measurements over a sampling period, and in support of ecological stressor modelling, metrics (summary statistics or indices) were... Categories: Data; Tags: Alabama, Aquatic Biology, Ecological, Environmental Health, Georgia, All tags... Habitat, Metrics, North Carolina, South Carolina, Southeast United States, Stressors, Substrate, USGS Science Data Catalog (SDC), Virginia, Water Quality, Water quality, biota, inlandWaters, Fewer tags Measures of the vulnerability of runoff to drought during 2015 in the western United States Measures used to assess the vulnerability of streamflow in 326 river basins to the 2015 drought in the western United States. Categories: Data; Tags: USGS Science Data Catalog (SDC), Western United States, drought, streamflow Nutrient and algal response values from a mesocosm experiment used to estimate algal growth rates These data have been collected as part of a cooperative project between the U.S. Geological Survey (USGS) and the U.S Environmental Protection Agency. This project began in 2016 and consisted of a mesocosm experiment quantifying short term responses by a transplanted natural diatom dominant algae community exposed to gradients of nitrogen, phosphorous, and a mixture of both nitrogen and phosphorus. The data consist of water quality parameters such as temperature and pH as well as aqueous nutrient concentrations and algae responses, including chlorophyll a concentrations, algae dry mass, algae ash-free dry mass, and intra-cellular phosphorus and nitrogen in algae. Algae growth rates were estimated from these data... Categories: Data; Tags: Aquatic Biology, Droop, Ecology, Environmental Health, Monod, All tags... Nitrogen, Phosphorus, QUAL, USGS Science Data Catalog (SDC), WASP, Water Quality, biota, diatom growth rate, mesocosm, water quality model parameterization, Fewer tags Baseflow Fractions at USGS Gages for Water Years 1981 to 2020 (ver. 2.0, October 2022) Simulated daily baseflow was summed from water year 1981 to 2020 and divided by observed streamflow at 13,208 sites where US Geological Survey operated a streamflow gage and calculated daily streamflow for at least 300 days. Days with negative flows (tidal systems) are not included. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Nonlinear Baseflow Model Source Code, Functions, and Scripts (ver. 2.0, October 2022) Source code, an R workspace with functions comprising a non-linear baseflow separation model, and a complete set of files to run the model in a compressed file including a script that will demonstrate how to run the model. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Network Analysis of USGS Streamflow Gages Note: this data release has been deprecated. Please see new data release here: https://doi.org/10.5066/P9C8NYTO. This data release has components of an analysis of the coverage, resolution, and representation of national public interests in streamflow information by the USGS streamflow gaging network that was active in water year 2020. The workflow for the analysis is implemented as scripts and functions in the statistical programming language R. The spatial framework for the analysis is based on from the National Hydrography Dataset medium resolution (1:100,000) segments, 12-digit Hydrologic Unit from the Watershed Boundary Dataset, and sites where USGS operated a streamflow gage in Water Year 2020. The analysis... Categories: Data; Tags: Hydrology, Information Sciences, United States, Water Quality, Water Resources, All tags... field monitoring stations, streamflow, Fewer tags