Statewide base-flow estimates for Oregon, water years 1980–2023
Base flow, the groundwater contribution to streamflow, is beneficial data for analysis of groundwater-flow systems. This data release includes base-flow estimates and streamflow data for 471 Oregon streamgage sites. Categories of data include: (1) site information, (2) water year estimates of base flow and streamflow, and (3) daily estimates of base flow. Water-year base-flow estimates are considered most reliable; daily estimates are provided for completion and summarization purposes only. Daily discharge (streamflow) data from water years 1980–2023 were obtained from the United States Geological Survey (USGS; https://waterdata.usgs.gov) and the Oregon Water Resources Department (OWRD; https://apps.wrd.state.or.us/apps/sw/hydro_report/) online databases and used to estimate base flow using three methods: low-flow, graphical hydrograph separation (GHS), and chemical hydrograph separation (CHS). Specific conductance (SC) data from continuous SC monitoring at streamgages were obtained from the USGS database and used for CHS base-flow analysis at 15 sites. Data are in .csv file and .txt file format.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Anna-Turi Maher", "@type": "vcard:Contact", "hasEmail": "mailto:annamaher@usgs.gov" } |
| description | Base flow, the groundwater contribution to streamflow, is beneficial data for analysis of groundwater-flow systems. This data release includes base-flow estimates and streamflow data for 471 Oregon streamgage sites. Categories of data include: (1) site information, (2) water year estimates of base flow and streamflow, and (3) daily estimates of base flow. Water-year base-flow estimates are considered most reliable; daily estimates are provided for completion and summarization purposes only. Daily discharge (streamflow) data from water years 1980–2023 were obtained from the United States Geological Survey (USGS; https://waterdata.usgs.gov) and the Oregon Water Resources Department (OWRD; https://apps.wrd.state.or.us/apps/sw/hydro_report/) online databases and used to estimate base flow using three methods: low-flow, graphical hydrograph separation (GHS), and chemical hydrograph separation (CHS). Specific conductance (SC) data from continuous SC monitoring at streamgages were obtained from the USGS database and used for CHS base-flow analysis at 15 sites. Data are in .csv file and .txt file format. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P17DGTTB", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.682fa1e5d4be027fab6e2d8b.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_682fa1e5d4be027fab6e2d8b |
| keyword |
[ "Deschutes River Basin", "Goose and Summer Lakes Basin", "Grand Ronde River Basin", "Hood River Basin", "John Day River Basin", "Klamath River Basin", "Malheur Lake (Harney) Basin", "Malheur River Basin", "Mid-Coast Basin", "North Coast Basin", "Oregon", "Owyhee River Basin", "Powder River Basin", "Rogue River Basin", "Sandy River Basin", "South Coast Basin", "USGS:682fa1e5d4be027fab6e2d8b", "Umatilla River Basin", "Umpqua River Basin", "Willamette River Basin", "base flow", "environment", "groundwater flow", "hydrographic datasets", "hydrology", "inlandWaters", "stream discharge" ] |
| modified | 2025-08-01T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -124.5500, 41.9800, -116.4600, 46.2700 |
| theme |
[ "geospatial" ] |
| title | Statewide base-flow estimates for Oregon, water years 1980–2023 |
