-
Federal
Base flow estimation via optimal hydrograph separation at CONUS watersheds and comparison to the National Hydrologic Model - Precipitation-Runoff Modeling System by HRU calibrated version
Department of the Interior —
Optimal hydrograph separation (OHS) is a two-component, hydrograph separation method that uses a two-parameter, recursive digital filter (RDF) constrained via... -
Federal
Baseflow Time Series (ver. 3.0, December 2025)
Department of the Interior —
Daily estimates of baseflow derived from a non-linear, baseflow separation model. The files "baseflow_huc_01_02_03.csv", "baseflow_huc_04_05.csv",... -
Federal
Base flow estimation via optimal hydrograph separation at CONUS watersheds and comparison to the National Hydrologic Model - Precipitation-Runoff Modeling System by HRU calibrated version
Department of the Interior —
Optimal hydrograph separation (OHS) is a two-component, hydrograph separation method that uses a two-parameter, recursive digital filter (RDF) constrained via... -
Federal
Real and synthetic data used to test the Two-tracer Ratio-based Mixing Model (TRaMM)
Department of the Interior —
This USGS Data Release represents the synthetic and real data from hydrologically diverse streams used to test the performance and limitations of the Two-tracer... -
Federal
Point Locations of 849 Continuous Record Streamflow Gages Used to Estmate Annual and Average Values of Water-Budget Components Based on Hydrograph Separation and PRISM Precipitation in the Appalachian Plateaus Region, 1900-2011
Department of the Interior —
As part of the U.S. Geological Survey’s Groundwater Resources Program study of the Appalachian Plateaus aquifers, estimates of annual water-budget components were... -
Federal
Average Estimates of Water-Budget Components Based on Hydrograph Separation and PRISM Precipitation for Gaged Basins in the Appalachian Plateaus Region, 1900-2011
Department of the Interior —
As part of the U.S. Geological Survey’s Groundwater Resources Program study of the Appalachian Plateaus aquifers, estimates of annual water-budget components were... -
Federal
Average-annual streamflow, runoff and baseflow, estimated for the period of record using six hydrograph-separation methods, for 312 gaged basins in the Northwestern Volcanic Aquifer Study Area, USA, 1904-2015.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
Annual streamflow, runoff and baseflow, estimated for the period of record using six hydrograph-separation methods, for 312 gaged basins in the Northwest Volcanic Aquifer Study Area, USA, 1904-2015.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
BFS Model Source Code, Functions, and Scripts (ver. 3.0, December 2025)
Department of the Interior —
Source code for functions comprising a non-linear baseflow separation model, and a complete set of files to run the model in a compressed file, run_bfs.zip, including... -
Federal
Hydrograph-separation results for 225 streams in the Chesapeake Bay watershed derived by using PART, HYSEP (Fixed, Local minimum, Slide), BFI, and a Recursive Digital Filter with streamflow data ranging from 1913 through 2016
Department of the Interior —
This U.S. Geological Survey (USGS) data release contains daily-mean streamflow and estimated-daily base flow for 225 streamgages in the Chesapeake Bay watershed... -
Federal
Non-linear baseflow separation model with parameters and results (ver. 3.0, December 2025)
Department of the Interior —
This data release contains source code for a non-linear baseflow separation model, calibrated values of parameters, and daily time series of the calculated baseflow... -
Federal
Baseflow Fractions for Water Years 1981 to 2020 (ver. 3.0, December 2025)
Department of the Interior —
Simulated daily baseflow was summed from water year 1981 to 2020 and divided by observed streamflow at 11,985 sites with streamflow gages. Daily baseflow was limited... -
Federal
BFS Model Parameters (ver. 3.0, December 2025)
Department of the Interior —
Site-specific parameters for a non-linear baseflow separation model determined by automated calibration to maximize baseflow. The file "bf_param.csv" has parameter... -
Federal
Datasets and scripts used for estimating streamflow and base flow within the nontidal Chesapeake Bay riverine system, water years 2006-15
Department of the Interior —
This U.S. Geological Survey (USGS) data release contains estimated daily streamflow and base flow for HUC12 in the nontidal areas of the Chesapeake Bay watershed,... -
Federal
Table 1. Station descriptions for 312 continuous-record streamflow gages, used to estimate runoff and baseflow using six hydrograph-separation methods, in the Northwest Volcanic Aquifer Study Area, USA.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
Polygon locations and contributing area for 312 gaged basins, used to estimate runoff and baseflow using six hydrograph-separation methods, in the Northwest Volcanic Aquifer Study Area, USA.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
Point locations of 312 continuous-record streamflow gages, used to estimate runoff and baseflow using six hydrograph-separation methods, in the Northwest Volcanic Aquifer Study Area, USA.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
Hydrologic disturbance classification used to describe anthropogenic impairments for gaged basins located in the Northwest Volcanic Aquifer Study Area, USA.
Department of the Interior —
The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative... -
Federal
Annual Estimates of Water-Budget Components Based on Hydrograph Separation and PRISM Precipitation for Gaged Basins in the Appalachian Plateaus Region, 1900-2011
Department of the Interior —
As part of the U.S. Geological Survey’s Groundwater Resources Program study of the Appalachian Plateaus aquifers, estimates of annual water-budget components were... -
Federal
Estimates of Baseflow, Runoff, and Ground-Water Recharge Base on Streamflow-Hydrograph Methods: Pennsylvania
Department of the Interior —
The U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources (PA DCNR), Bureau of Geological Survey,...