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

2016 Impaired Streams of Iowa

Metadata Updated: September 8, 2023

This dataset contains line work representing streams and rivers listed as "impaired" in Iowa's 2016 Section 305(b) Water Quality Assessment and the 303(d) Impaired Waters Report. Together, these two reports are known as Iowa's 2016 Integrated Report. Waterbodies in Iowa each have specific designations based on what they are commonly used for-recreation, such as swimming or fishing; drinking water; or maintaining a healthy population of fish and other aquatic life. Every two years, Iowa must report on its progress in meeting water quality goals to the U.S. Environmental Protection Agency (EPA). The state prepares one report called the 305(b) Water Quality Assessment or 305(b) list. This 305(b) list categorizes waterbodies to reflect: those that meet all the designated uses (category 1), those in which data availability is insufficient to determine whether any or all designated uses are being met (categories 2 and 3), and those waters in which the water quality prevents it from fully meeting its designated use, and is thus considered "impaired". New impairments (or category 5 listings) are placed on the "303(d) Impaired Waters Report", commonly referred to as the "impaired waters list." This is named after section 303(d) of the Federal Clean Water Act and means that the stream or lake needs a water quality improvement plan written (also known by a technical name, "Total Maximum Daily Load," or "TMDL"). The water quality improvement plan outlines water quality problems, identifies sources of the problem(s), identifies needed reductions in pollutants and offers possible solutions. Water quality improvement plans are approved by the EPA and then the waters are moved from the 303(d) list back to the 305(b) list as category 4 listings (waters considered impaired, but a water quality improvement plan has been written).

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 September 8, 2023

Metadata Source

Harvested from Iowa metadata

Additional Metadata

Resource Type Dataset
Metadata Created Date January 20, 2023
Metadata Updated Date September 8, 2023
Publisher data.iowa.gov
Maintainer
Identifier https://data.iowa.gov/api/views/te62-pyd9
Data First Published 2019-02-26
Data Last Modified 2023-08-30
Category Environmental Assessment
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 fe5e6ebf-a8be-4064-9be5-1bc557fcea6c
Harvest Source Id b99375b9-0a36-4269-920a-6778122ddb87
Harvest Source Title Iowa metadata
Homepage URL https://data.iowa.gov/d/te62-pyd9
License http://creativecommons.org/publicdomain/zero/1.0/legalcode
Source Datajson Identifier True
Source Hash 357ca5eeb5b85c68d2a8c3c5bffbd6a43bdd4663b27c9a305b164aec16fa137e
Source Schema Version 1.1

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