Filters: Contacts: David M Wolock (X) > partyWithName: David M Wolock (X) > partyWithName: Daren M Carlisle (X)

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Matched ecological assessment and stream gaging data for the CONUS Ecological assessment data from the USGS National Water-Quality Assessment Program and the USEPA National River and Stream Assessment were reviewed and records were retained from sampling sites co-located with active USGS stream gages. A limited amount of ancillary data, including location, physical watershed features, and basic water chemistry data for each site were also retained. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Ecology, National Water Quality Program, USGS Science Data Catalog (SDC), United States, All tags... biological diversity, stream-gage measurement, Fewer tags Trends in selected streamflow metrics at reference streamgages in the conterminous United States, 1955-2014 This dataset includes four tables related to annual trends in streamflow metrics at 599 reference streamgages in the conterminous United States for the period 1955-2014. Reference streamgages are defined here as gages with drainage basins that are minimally impacted by anthropogenic effects such as reservoirs or urbanization. The four tables are: 1) computed annual values for 16 streamflow metrics, 2) trend estimates for the 16 streamflow metrics for the period 1955-2014, 3) metric names and definitions, and 4) location information (latitude and longitude) for the 599 sites. The computed annual values for the 16 streamflow metrics are: low flow magnitude, low flow frequency, low flow duration, high flow magnitude,... Categories: Data; Tags: Conterminous U.S., Sen slope, USGS Science Data Catalog (SDC), Water Resources, reference sites, All tags... streamflow metrics, trends, Fewer tags Natural Monthly Flow Estimates for the Conterminous United States, 1950-2015 This metadata record describes monthly estimates of natural stream flows for greater than 2.5 million stream reaches, defined by the National Hydrography Dataset (NHD) Version 2.0, in the conterminous United States for the period 1950-2015. A statistical machine learning technique - random forest modeling - was applied to estimate natural flows using 200 potential predictor variables. The dataset is organized by level 3 ecoregions, with each ecoregion having its own directory. Separate .csv files for each stream reach in the NHD network belonging to a given ecoregion are contained within the respective ecoregion directories. The stream reach .csv files are named as the NHD COMID corresponding to that stream reach.... Tags: Conterminous United States, National Water Quality Program, USGS Science Data Catalog (SDC), Water Resources, hydrology, All tags... river reaches, streamflow, water resources, Fewer tags Empirical Models for Estimating Baseline Streamflows in California and their Likelihood of Anthropogenic Modification The dataset contain estimates of natural monthly streamflow for 135,118 stream segments in California, USA, from 1950 to 2012. These estimates were made using statistical models described in Carlisle and others, 2016, Open File Report 2016-1189. Segments are identified per the medium resolution National Hydrography Dataset (NHD), Version 1. The dataset also contains observed monthly streamflows and estimates of natural monthly streamflows for 894 USGS stream gages in California, USA. Categories: Data; Tags: California, California, National Hydrography Dataset, National Water Quality Program, Statistical model, All tags... Streamflow, Streamflow alteration, USGS Science Data Catalog (SDC), Water Resources, Fewer tags