Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Base-Flow Index, 2002
type: Dataset
description: This tabular data set represents the mean base-flow index expressed as a percent, compiled for every catchment of MRB_E2RF1 catchments of Major River Basins (MRBs, Crawford and others, 2006). Base flow is the component of streamflow that can be attributed to ground-water discharge into streams. The source data set is Base-Flow Index for the Conterminous United States (Wolock, 2003). The MRB_E2RF1 catchments are based on a modified version of the U.S. Environmental Protection Agency's (USEPA) ERF1_2 and include enhancements to support national and regional-scale surface-water quality modeling (Nolan and others, 2002; Brakebill and others, 2011). Data were compiled for every catchment of MRB_E2RF1 catchments for the conterminous United States covering New England and Mid-Atlantic (MRB1), South Atlantic-Gulf and Tennessee (MRB2), the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy (MRB3), the Missouri (MRB4), the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf (MRB5), the Rio Grande, Colorado, and the Great basin (MRB6), the Pacific Northwest (MRB7) river basins, and California (MRB8).
issued: 2025-11-21T02:55:39.226435
modified: 20201117
spatial: Location
contact point: Organization
  fn: Michael E. Wieczorek
keyword: amerigeo
keyword: amerigeoss
keyword: base-flow-index
keyword: cali
keyword: california
keyword: catchment
keyword: ckan
keyword: cogb
keyword: conterminous-united-states
keyword: environment
keyword: geo
keyword: geoscientificinformation
keyword: geoss
keyword: glmr
keyword: great-lakes-ohio-upper-mississippi-and-souris-red-rainy
keyword: inlandwaters
keyword: lmtg
keyword: lower-mississippi-arkansas-white-red-and-texas-gulf
keyword: major-river-basins
keyword: missouri
keyword: mori
keyword: mrb
keyword: mrb1
keyword: mrb2
keyword: mrb3
keyword: mrb4
keyword: mrb5
keyword: mrb6
keyword: mrb7
keyword: mrb8
keyword: mrbe2rf1
keyword: mrbe2rf1ws
keyword: national
keyword: nawqa
keyword: nema
keyword: new-england-and-mid-atlantic
keyword: north-america
keyword: pacific-northwest
keyword: panw
keyword: rio-grande-colorado-and-great-basin
keyword: sagt
keyword: south-atlantic-gulf-and-tennessee
keyword: sparrow
keyword: united-states
theme: {geospatial}

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-07-28T19:28:27.416985
modified: 2025-11-21T02:55:39.204879
access URL: https://water.usgs.gov/lookup/getspatial
media type: application/http

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-07-28T19:28:27.416978
modified: 2025-11-21T02:55:39.204446
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.e03b1d5a-2420-4767-9f65-ee12380014a6.xml
media type: text/xml

US Migrating
type: Agent