Data includes medium and large animal feeding operation sites as defined by the U.S. Environmental Protection Agency (EPA). The EPA defines a medium site as a facility with a capacity of 300-999 animal units and a large site as a facility with a capacity of 1,000 or more animal units. Values provided for each animal species type equates to animal units, not the number of animals per head. “Animal unit” means a unit of measurement based upon the product of multiplying the number of animals of each category by a special equivalency factor. For example, swine weighing more than 55 pounds have an AU factor of 0.4, a herd of 750 head multiplied by 0.4 equals 300 animal units. Animal units are defined in IAC 567 Chapter 65. More information regarding calculating animal unit capacity can be found at https://www.iowadnr.gov/Portals/idnr/uploads/afo/fs_mmp.pdf. Note - facilities below 500 animal units in the state of Iowa have no permitting or manure management plan requirements. Therefore, facilities with a capacity of 300-499 shown in this data likely will not have a construction permit or any type of manure management plan.This geodatabase contains 3 feature classes: animal_feeding_operations, AFO_open_feedlots, and AFO_confinements. XML metadata can be found in the gdb folder.

"Protected Water Area" means a water area permanently designated by the Natural Resource Commission for inclusion in the protected water area system."Protected water area system" means a total comprehensive program that includes the goals and objectives, the state plan, the individual management plans, the prospective protected water areas, the protected water areas, the acquisition of fee title and conservation easements and other agreements, and the administration and management of such areas.The PWA General Plan identifies a voluntary protection zone which is a minimum of 50 feet adjacent to the river and the natural, historical, and/or archaeological areas, and other areas where visual degradation would adversely impact the scenic qualities of the river route.

description: The Natural Resources Geographic Information System (NRGIS) Library is a Geographic Information System (GIS) repository developed and maintained by the GIS Section of the Iowa Department of Natural Resources (DNR). It is a collection of more than 20,000 geographically referenced databases. The purpose of the NRGIS Library is to improve the availability, integration, and analysis of natural resource information and improve decisions to carry out agency responsibilities related to the management, protection and development of Iowa's natural resources. The NRGIS Library is seen as a one-stop repository for all of Iowa's natural resource, geographic information.; abstract: The Natural Resources Geographic Information System (NRGIS) Library is a Geographic Information System (GIS) repository developed and maintained by the GIS Section of the Iowa Department of Natural Resources (DNR). It is a collection of more than 20,000 geographically referenced databases. The purpose of the NRGIS Library is to improve the availability, integration, and analysis of natural resource information and improve decisions to carry out agency responsibilities related to the management, protection and development of Iowa's natural resources. The NRGIS Library is seen as a one-stop repository for all of Iowa's natural resource, geographic information.

(In progress)1930s: This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture from 1936-1941.1950s: This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture in the 1950s.1960s: This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture in the 1960s.1970s: This imagery is provided through a project funded by the Iowa DNR in cooperation with the Iowa USDA Natural Resources Conservation Service, and ISU GIS Facility. The source aerial photos for this map service were acquired by the US Department of Agriculture from May 1967 to October 1974.1980s: This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility. The source aerial photos for this map service were acquired by the National High Altitude Program (NHAP) from May 1981 to August 1986.1990s: Digital Orthophoto Quads (DOQs) are aerial photos in which displacements caused by camera orientation and terrain have been removed. DOQs combine the image characteristics of a photograph with the geometric qualities of a map. The DOQs on this site are from aerial photos taken from 1990-2000 through the US Geological Survey.

This resource is a metadata compilation for 20 map data layers including vector and raster data developed to assess site suitability for heat pump development including karst potential, known wells, contaminant sources, hydrogeologic properties in the Dubuque County area. The data layers are hosted by the Iowa Geological and Water Survey. Data are stored in Web Mercator projection ESPG:102113 and are available as ESRI ArcGIS Server layers at http://programs.iowadnr.gov/arcgis/rest/services/Projects/Geothermal/MapServer. This dataset is delivered as an ESRI file geodatabase. The data were provided by the Iowa Geological and Water Survey under the AASG Geothermal Data project for distribution.

This feature service gives users access to the State Parks Data created by the Iowa DNR

This data set is representational of the trout streams in Iowa. It is compiled from the "Iowa Trout Fishing Guide" published by the DNR.

Published to allow joining of spreadsheet data to county geometry in ESRI Maps for Office or Map Analysis Tools, contains Iowa DOM County Code (1-99) as a small integer, Census County FIPS as a both an string and integer. This data was originally created by the Iowa DNR and digitized from USGS 7.5' topographic maps.Click on the data tab above to see an example of expected data. OCIO has a tutorial on how to join your spreadsheet to this Feature layer to create a new feature layer with your county based information. Please contact patrick.wilke-brown@iowa.gov.

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."

Represents DNR's Wildlife Management Areas in Iowa. Created and maintained by the Iowa DNR

This data download is intended to provide information on Iowa's wetlands. In particular, data recorded in the National Wetland Inventory. This data was mapped from the 2002 CIR Aerial Photography.

Point locations of wells entered into the Iowa DNR Private Well Tracking System. Includes private well permits, well test registration, abandoned well registration, and well renovation registration administered by the grants-to-counties program.

Antidegradation refers to federal and state regulations designed to maintain existing uses of surface waters and to protect high quality waters from unnecessary pollution. An Outstanding Iowa Water (OIW) is defined as the following: "A surface water that IDNR has classified as an outstanding state resource water in the water quality standards." An OIW receives Tier 2 ½ protection. Tier 2 ½ Review is defined as follows: "Policies and procedures that prohibit any lowering of water quality in unique waters as identified in the water quality standards unless the lowering is temporary and limited, results from expansion of existing sources, or serves to maintain or enhance the value, quality, or use of the OIW, as determined by the Director of IDNR on a case-by-case basis."

Combined database of all wells with uniform attributes from detailed individual well databases (see General and Entity Attribute sections of metadata for individual shape files). All_wells is intended to serve as a metadata-level well database. Large overlaps are known to exist among databases; however, all are preserved as found in order to preserve program-specific information. For example a well may derive geologic data from the Geologic Sampling Points database, public water supply data from the SDWIS Wells database and Water Allocation information from the Water Use (WACOP) database. Each of these will be represented by a record within All_wells.

Facilities with operating permits for Public Water Supplies (systems that serve 25 or more people) for drinking water. This data is from the Iowa DNR's Safe Drinking Water Information System (SDWIS). This layer represents each public water supply system at one point.

This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture from 1936-1941.

Spill incidents reported to Iowa DNR and tracked in the Hazardous Substance Incident database. These Emergency Release Notifications are tracked for Section 304 of the Emergency Planning and Community Right-to-Know Act (EPCRA) and 567 IAC Chapter 131.

This shape file represents Iowa Historic Cemeteries. Originally it was based on an Iowa DNR point file marking cemetery locations as found on 7.5 min. USGS quad maps. IDCA remapped all of these cemeteries as polygons to show the actual size (area and perimeter). Additional cemeteries have been added over the years and continue to be added as ID'd.

1800s General Land Office Survey Map of Iowa from survey conducted from 1836 through 1859. The source of the images is scanned microfilm of plats from the State Archives. These plats represent maps drawn from the original field notes by the Surveyor General's Dubuque office. This data is provided by the Iowa DNR Geological Survey Bureau.

Structures, projects, or sites which were issued a Floodplain Development Permit by the Iowa DNR.