Hydrographic and Impairment Statistics Database: PORE
type: Dataset
contact point: Organization
  fn: NPS IRMA Help
keyword: tmdl
keyword: ditch
keyword: hydrographic-and-impairment-statistics
keyword: marsh
keyword: clean-water-act
keyword: 303d
keyword: river
keyword: boundaries
keyword: total-maximum-daily-load
keyword: sea
keyword: designated-uses
keyword: amerigeoss
keyword: seep
keyword: national-hydrography-dataset
keyword: pore
keyword: inlandwaters
keyword: shoreline
keyword: wetlands
keyword: lake
keyword: national
keyword: hydrography
keyword: oceans
keyword: nhd
keyword: reservoir
keyword: his
keyword: regulatory
keyword: geoscientificinformation
keyword: ocean
keyword: resource-management
keyword: north-america
keyword: waterfall
keyword: geoss
keyword: united-states
keyword: water
keyword: hydrographic-statistics
keyword: pond
keyword: boundary
keyword: geo
keyword: impairment-statistics
keyword: stream
keyword: canal
keyword: spring
keyword: amerigeo
keyword: statistics
keyword: impairment
keyword: point-reyes-national-seashore
keyword: ckan
keyword: swamp
keyword: inland-waters
keyword: cwa
keyword: impaired-waters
theme: {"Geospatial Dataset"}
description: Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government Performance and Results Act of 1993 (GPRA). One water resources management goal established by the Department of the Interior under GRPA requires NPS to track the percent of its managed surface waters that are meeting Clean Water Act (CWA) water quality standards. This goal requires an accurate inventory that spatially quantifies the surface water hydrography that each bureau manages and a procedure to determine and track which waterbodies are or are not meeting water quality standards as outlined by Section 303(d) of the CWA. This project helps meet this DOI GRPA goal by inventorying and monitoring in a geographic information system for the NPS: (1) CWA 303(d) quality impaired waters and causes; and (2) hydrographic statistics based on the United States Geological Survey (USGS) National Hydrography Dataset (NHD). Hydrographic and 303(d) impairment statistics were evaluated based on a combination of 1:24,000 (NHD) and finer scale data (frequently provided by state GIS layers).
issued: 2019-02-08
modified: 2019-02-08
spatial: Location

US Migrating
type: Agent

PORE_HIS.xml
type: Distribution
access URL: https://irma.nps.gov/DataStore/DownloadFile/618886
media type: application/xml
description: Original FGDC metadata used to create this reference. Be aware that some of the fields, including file paths, may be out of date. This file should only be used for understanding additional documentation that is not already managed by Data Store.
format: XML
issued: 2022-08-07T15:48:51.590605
modified: 2025-11-20T01:27:13.915291

PORE_HIS.zip
type: Distribution
access URL: https://irma.nps.gov/DataStore/DownloadFile/618887
media type: application/zip
format: ZIP
issued: 2022-08-07T15:48:51.590613
modified: 2025-11-20T01:27:13.915693