data.iowa.gov

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Author
Iowa Department of Natural Resources
Description
Under Section 303(d) of the Clean Water Act, states are required from "time to time" to submit a list of waters for which effluent limits will not be sufficient to meet all state water quality standards. EPA has defined "time to time" to mean April 1 of even numbered years. The failure to meet water quality standards might be due to an individual pollutant, multiple pollutants, "pollution," or an unknown cause of impairment. The 303(d) listing process includes waters impaired by point sources and nonpoint sources of pollutants. States must also establish a priority ranking for the listed waters, taking into account the severity of pollution and uses. The EPA regulations that govern 303(d) listing can be found in the Code of Federal Regulations 40 CFR 130.7. The Iowa Department of Natural Resources compiles this impaired water list, or 303(d) listing. The 303(d) listing is composed of those lakes, wetlands, streams, rivers, and portions of rivers that do not meet all state water quality standards. These are considered "impaired waterbodies" and states are required to calculate total maximum daily loads (TMDLs) for pollutants causing impairments.
Category
Environmental Assessment
Tags
water quality, streams, rivers, impaired list
Rating
Current value: 0 out of 5
Data Provided By
Iowa Department of Natural Resources
Source Link
ftp://ftp.igsb.uiowa.edu/gis_library/IA_state/hydrologic/surface_waters/impaired_streams_2010.html
License
Public Domain
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The Socrata Open Data API (SODA) provides programmatic access to this dataset including the ability to filter, query, and aggregate data. For more more information, view the API docs for this dataset or visit our developer portal

API Endpoint:

Field Names:

CO_NUMBER
co_number
the_geom
the_geom
WBID
wbid
WATERBODY
waterbody
COUNTY
county
REGION
region
Location
location
IRCat2010
ircat_2010
Change2008
change_2008
Impairment
impairment
Legend
legend
IRCat2008
ircat_2008

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