David J Holtschlag

Datasets to reproduce the exploratory Bayesian network developed in USGS SIR 2018-5053 for estimating water-quality parameters at streamgage 03374100 White River at Hazleton, Indiana, 1973-2016

This U.S. Geological Survey (USGS) data release contains the data used in the USGS Scientific Investigations Report 2018-5053 entitled "An exploratory Bayesian network for estimating the magnitudes and uncertainties of selected water-quality parameters at streamgage 03374100 White River at Hazleton, Indiana, from partially observed data." The four datasets, which contain only ASCII characters in a column-oriented format, are: (1) sel_qw_parm_full_time_series.csv: A comma-delimited file containing an irregular time series of 713 rows of discrete water-quality measurements that start on February 21, 1973 and end on September 14, 2016. (2) baye_network_initialize.cas: This tab-delimited file can be used to initialize...

Categories: Data; Tags: Bayesian, Bayesian network, Hazleton, Hydrogeology, Indiana, All tags... USGS Science Data Catalog (SDC), Water Quality, Water Resources, White River, conditional probability, d-separation (directional separation), directed acyclic graph (DAG), stream-gage measurement, streamflow, surface water (non-marine), surface water quality, water quality, Fewer tags

Data on Factors Affecting Spatial and Temporal Variations of Annual Summer Median Water Yields in Southwestern Michigan, 1945-2015

Median summer water yields and resultant flows are used in Michigan to regulate large water withdrawals to help prevent negative effects on characteristic fish populations. Large water withdrawals commonly are associated with irrigation in rural areas. In an earlier statewide report, an index-flow statistic for the period of record, defined as the median flow during the summer month of lowest flow, was used to characterize median summer flows and associated water yields. In this report, the annual series of median summer water yields for the period July 1 through September 30 within the period of record is used to characterize median summer water yields. For 27 streamgages included in both reports, the average index...

Categories: Data; Tags: Allegan County, Michigan, Barry County, Michigan, Berrien County, Michigan, Branch County, Michigan, Calhoun County, Michigan, All tags... Cass County, Michigan, Clinton County, Michigan, Eaton County, Michigan, Elkhart County, Indiana, Gratiot County, Michigan, Hillsdale County, Michigan, Hydrologic Unit 0405, Ingham County, Michigan, Ionia County, Michigan, Jackson County, Michigan, Kalamazoo County, Michigan, Kent County, Michigan, Lagrange County, Indiana, Montcalm County, Michigan, Noble County, Indiana, Ottawa County, Michigan, St. Joseph County, Indiana, St. Joseph County, Michigan, Steuben County, Indiana, USGS Science Data Catalog (SDC), Van Buren County, Michigan, Water Resources, air temperatue, hydrologic soil group, irrigation, mixed effect regression model, precipitation, trend, water yield, Fewer tags

Attributions for nonstationary peak streamflow records in the Midwest region, 1941-2015 and 1966-2015, and supporting information

This dataset contains four core comma separated values (csv) files (50-year monotonic, 75-year monotonic, 50-year change point, and 75-change point). Each of the four core csv files includes the USGS gage identifier, various statistical values, primary and secondary attribution, level of evidence, and comments/citations. The comments/citations column should include any sources, in addition to the statistical values in the csv, that were needed to decide on the correct attribution.

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Datasets, Flooding, Peak-flow, Trends, United States

The U.S. Geological Survey Dakota Water Science Center, in cooperation with the Federal Highway Administration, analyzed annual peak-flow data to determine if trends are present and provide attribution of trends where possible. Work for the national trend attributions for nonstationary annual peak-flow records was broken into seven regions that are loosely based off of two-digit hydrologic unit watershed boundaries. Each of the regions made attributions for nonstationary annual peak-flow records using both monotonic trends and change point for 50 (1966-2015) and 75 (1941-2015) year trends. Each child page contains four supporting comma separated values (csv) files (50-year monotonic, 75-year monotonic, 50-year change...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Datasets, Flooding, Hydrology, Peak-flow, Trends, All tags... USGS Science Data Catalog (SDC), Water Resources, Fewer tags

Code, data, executables, and other information used to run Unit Flows in Networks of Channels (UFINCH) - A method for simulating unit and daily flows in networks of channels described by NHDPlus using continuous flow data at U.S. Geological Survey streamgages

This U.S. Geological Survey (USGS) data release contains the code, data, executables, and other information necessary to run the application Unit Flows in Networks of Channels (UFINCH). The UFINCH application is a computer code that utilizes the geospatial stream connectivity and catchment geometry described in National Hydrography Dataset Plus value added attributes (NHDPlus Version 2) to simulate unit (15-minute) flows in networks of channels, generally by use of daily flows at the most downstream stream segment in a basin at which a USGS streamgage is located. Preliminary testing indicates that UFINCH may be most applicable for simulating unregulated, non-estuarial, flows in basins as large as 3,000 square miles...

Types: Citation; Tags: Hawaii, NHDPlus geospatial data describing stream networks, NWIS daily flows, National Water Quality Program, Puerto Rico, All tags... USGS Science Data Catalog (SDC), United States, Virgin Islands of the United States, geospatial datasets, stream-gage measurement, streamflow, surface water (non-marine), Fewer tags