Regions for regional regression equations

Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage area as the only explanatory variable. The island was divided into 2 regions to minimize residuals. The region division that resulted in lower and more balanced residuals runs primarily north-south near the center of the island, mostly along an 8-digit hydrologic unit code (HUC8) boundary. The division line runs through a HUC8 polygon on the southern end of the island, but care was taken to include entire watersheds and consideration was given where hydrologic and physiographic properties differed. This data release includes geographic information system files that define the polygons for both regions.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220722134805
identifier USGS:5fa06e49d34e198cb79192a3
metadata_type geospatial
modified 20210920
old-spatial {"type": "Polygon", "coordinates": [[[-67.272184561, 17.925619247], [-67.272184561, 18.517125578], [ -65.588508126, 18.517125578], [ -65.588508126, 17.925619247], [-67.272184561, 17.925619247]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash a1bee260256b90381e919529ba44451654423f47
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-67.272184561, 17.925619247], [-67.272184561, 18.517125578], [ -65.588508126, 18.517125578], [ -65.588508126, 17.925619247], [-67.272184561, 17.925619247]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • ckan
  • floods
  • geo
  • geoss
  • huc
  • inlandwaters
  • national
  • north-america
  • regression-analysis
  • river-discharge
  • statistical-analysis
  • streamflow
  • streamflow-monitoring
  • united-states
  • usgs-5fa06e49d34e198cb79192a3
  • watershed
  • watershed-boundary-dataset
  • wbd
isopen False
license_id notspecified
license_title License not specified
maintainer Patrick J Ryan
maintainer_email pryan@usgs.gov
metadata_created 2025-11-22T07:54:59.813929
metadata_modified 2025-11-22T07:54:59.813933
notes Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage area as the only explanatory variable. The island was divided into 2 regions to minimize residuals. The region division that resulted in lower and more balanced residuals runs primarily north-south near the center of the island, mostly along an 8-digit hydrologic unit code (HUC8) boundary. The division line runs through a HUC8 polygon on the southern end of the island, but care was taken to include entire watersheds and consideration was given where hydrologic and physiographic properties differed. This data release includes geographic information system files that define the polygons for both regions.
num_resources 2
num_tags 20
title Regions for regional regression equations