data.iowa.gov

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Author
Iowa Department of Natural Resources
Description
This dataset represents the centroids of lakes, reservoirs, and wetlands that were listed as "impaired" in Iowa's 2014 Section 305(b) Water Quality Assessment and the 303(d) Impaired Waters Report. Together, these two reports are known as Iowa's 2012 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).
Category
Environmental Assessment
Tags
water quality, waterbodies, lakes, impaired list
Rating
Current value: 0 out of 5
Data Provided By
Iowa Department of Natural Resources
License
Public Domain
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Size
  • 500x425

  • 760x646

  • 950x808

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425x425 is the minimum size

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:

OBJECTID
objectid
SegID_1_13
seg_id_1_13
OBJECTID_1
objectid_1
the_geom
the_geom
SegID
seg_id
Waterbody
waterbody
WBID
wbid
List
list
IRCategory
ircategory
Imp_Use
imp_use
CauseStres
cause_stres
UseSupport
use_support
Yr_Imp
yr_imp
Location
location
Rationale
rationale
WBType
wbtype
NoImp4WB
no_imp_4_wb
Co_Number
co_number
County
county
X_UTM
x_utm
Y_UTM
y_utm

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Socrata OData documentation

Tableau users should select the OData v2 endpoint option.

OData V4 Endpoint:

OData V2 Endpoint:

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