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This is a Non-Federal dataset covered by different Terms of Use than Data.gov. See Terms

Iowa Watershed Boundaries: Watersheds (HUC 10)

Metadata Updated: December 8, 2023

The Watershed Boundary Dataset (WBD) defines the areal extent of surface water drainage to a point, accounting for all land and surface areas. Watershed Boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. The intent of defining Hydrologic Units (HU) for the Watershed Boundary Dataset is to establish a base-line drainage boundary framework, accounting for all land and surface areas. At a minimum, the WBD is being delineated and georeferenced to the USGS 1:24,000 scale topographic base map meeting National Map Accuracy Standards (NMAS). Hydrologic units are given a Hydrologic Unit Code (HUC). For example, a hydrologic region has a 2-digit HUC. A HUC describes where the unit is in the country and the level of the unit.

"A hydrologic unit is a drainage area delineated to nest in a multi-level, hierarchical drainage system. Its boundaries are defined by hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream or similar surface waters. A hydrologic unit can accept surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, non-contributing, and diversions to form a drainage area with single or multiple outlet points. Hydrologic units are only synonymous with classic watersheds when their boundaries include all the source area contributing surface water to a single defined outlet point."

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. See Terms License: See this page for license information.

Downloads & Resources

Dates

Metadata Created Date January 20, 2023
Metadata Updated Date December 8, 2023

Metadata Source

Harvested from Iowa metadata

Additional Metadata

Resource Type Dataset
Metadata Created Date January 20, 2023
Metadata Updated Date December 8, 2023
Publisher data.iowa.gov
Maintainer
Identifier https://data.iowa.gov/api/views/jp2y-4hkt
Data First Published 2019-02-26
Data Last Modified 2023-12-05
Category Physical Geography
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.iowa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 82bd1c00-bc64-4d54-bf35-e65c99fe44a8
Harvest Source Id b99375b9-0a36-4269-920a-6778122ddb87
Harvest Source Title Iowa metadata
Homepage URL https://data.iowa.gov/d/jp2y-4hkt
License http://creativecommons.org/publicdomain/zero/1.0/legalcode
Source Datajson Identifier True
Source Hash 2d5a31a1448f0152ebb743c71adbfb7d13a2b43faffb85d376217c824d6dd82c
Source Schema Version 1.1

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