Idaho DEQ American Rescue Plan Act (ARPA) Water Infrastructure Grants Interactive MapLast updated: 10/21/2025

Idaho 2012 Final Integrated ReportEvery two years, DEQ is required by the federal Clean Water Act to conduct a comprehensive analysis of Idaho's water bodies to determine whether they meet state water quality standards and support beneficial uses or if additional pollution controls are needed. This analysis is summarized in Idaho's Integrated Report.The Integrated Report is submitted to the US Environmental Protection Agency (EPA) for approval and made available to the public. The report serves as a guide for developing and implementing water quality improvement plans (total maximum daily loads) to protect water quality and achieve federal and state water quality standards.An Integrated Report must be approved by EPA before it can be used by a State to guide its management decisions. Idaho's 2012 Integrated Report. was submitted to EPA for review on January 28, 2014, and approved by EPA on July 11, 2014 (EPA Approval Letter).305(b) Shapefile Download (Inside Idaho)IDEQ Integrated Report Home PageFinal 2012 Integrated Report (PDF)Final 2012 305B Interactive Mapping Project (ArcGIS Server 10.5.1)Idaho DEQ Water Quality Standards (Beneficial Uses) Map Package

This map viewer identifies stormwater post-construction permitting authorities and requirements for development projects in NC. The contact is Bethany Georgoulias at bethany.georgoulias@ncdenr.gov or (919) 807-6372.

This interactive map layer provides geographic locations and key details for environmental incidents voluntarily reported and documented in the DEQ's Environmental Incident Database. The database includes information reported to the DEQ regarding spills, releases, and other events that may pose a risk to the environment or public health. Each point on the map represents a reported incident and contains information such as the report number, the date the incident was reported, the party responsible, the location, and the substance or chemical involved. This tool is intended to help the public and other stakeholders access information about environmental incidents in their areas of interest.

NOTE: Due to the size of this file, it can only be downloaded as a File Geodatabase.This statewide shapefile contains the freshwater surface water classifications for all named streams in North Carolina. This data was first uploaded on March 6, 2015 and originally pulled from BIMS in November 2014. To learn more about what classifications are, see the Classifications and Standards/Rule Review Branch website. Download this dataset from the DEQ Open Data PageThe Tile Layer for this Feature Layer is DWR Surface Water Classifications.Attributes:BIMS_INDEX: Index number BIMS_Names: Stream Name BIMS_Descr: Description of stream segment (from - to) BIMS_Class: Surface Water Classification BIMS_Date: Date the classification was given to that segment ClassURL: Link to the Classifications website that defines each classification Name: River Basin Contacts:Data Contact: Chris VentaloroLayer/Service Contact: Melanie Williams Updates: 05/24/2016: Changed the URL for the classifications page; fixed the Clear Creek (FBR) line segment; re-uploaded this as a new feature service with the ability to overwrite. 6/1/2017: Geometry for Index Numbers 18-(71) of the Cape Fear River and 18-88-1 of Walden Creek were missing from the feature service. The geometry was corrected with the existing file on local servers and the online feature service was overwritten. This feature layer can be found in the NC Surface Water Classification map application.

This web application contains layers to help the public better utilize the artificial reef and oyster sanctuaries of North Carolina. Data Uploaded Spring 2016. Reef and Oyster material digitized between November 2014 and June 2015. Source: NCDMF Coverage Area: Statewide estuarine and benthic waterways Layers Artificial Reefs (Locations of Reef Sites) Oyster Sanctuaries (Location of Oyster Sanctuary Sites) Boundaries (Reef and Oyster Sanctuary Boundaries) Artificial Reef Materials (Material digitized based on Side Scan Sonar Imagery) Oyster Sanctuary Materials (Material digitized based on Side Scan Sonar Imagery) Web Mapping Service: Web Map Application: Data/Service Contact: Curt Weychert, Amy Comer, Michael Griffin. The data included in this application will be reevaluated yearly for the need of any updates. Link to Web Map: http://ncdenr.maps.arcgis.com/home/webmap/viewer.html?webmap=0e9e3b03d44c4666a2cdbdd00f575fc6

This dataset includes impaired rivers, streams, and waterbodies listed in Montana's 305(b)/303(d) Integrated Water Quality Report for the year noted in this map layers CYCLE attribute. The report lists waters which have been assessed as fully supporting all applicable beneficial uses, waters determined to be water quality impaired for one or more beneficial uses, and waters where the information collected to date is not sufficient to complete beneficial use support determinations. The 303(d) List, required by the federal Clean Water Act, focuses on waters in the state which have been assessed as having one or more of their beneficial uses impaired by human-caused pollutants/pollution. The geometry for each Assessment Unit stream in this dataset is based on the 1:24,000 High Resolution NHD. Data set is appropriate for 1:24,000 scale uses. To view detailed information for all impairments and related water variables in an interactive viewer, please visit the Montana DEQ Clean Water Act Information Center (CWAIC) mapping application located at - https://clean-water-act-information-center-mtdeq.hub.arcgis.com/.

Areas with Elevated Nitrate in Ground Water Thirty-five areas in Idaho have been identified as nitrate priority areas (NPAs) with elevated levels of nitrate in ground water, according to a study prepared by the Idaho Department of Environmental Quality (DEQ).Nitrate is a chemical form of nitrogen found in soil and water. In elevated levels, nitrates can present a risk to human health. NPAs are areas where 25% of the sampled wells contain water with nitrate levels of 5 milligrams per liter (mg/L) or greater. The drinking water standard is 10 mg/L.DEQ conducted the study in conjunction with the Idaho Ground Water Monitoring Technical Committee, a panel of scientists from state and federal agencies, and health districts.The 2020 Nitrate Priority Area Delineation and Ranking Process document ranks the 35 areas based on the following three primary criteria:• the number of people living in an area that are potentially drinking nitrate-degraded water• the percentage of sampled wells with elevated ground water nitrate concentrations• water quality trends indicating whether nitrate levels are increasing, staying the same, or decreasing.The potential impact of nitrate on other beneficial uses of ground water besides water supply was also considered.The NPA's are located across Idaho, primarily along the Snake River Plain. The top five NPAs are: NE Star, Mountain Home AFB, Minidoka, Fort Hall, and Marsh Creek..The study consisted of compiling data from over 14,000 wells statewide. Of these, over 4,300 are located within the boundaries of the NPAs. Approximately 414,000 people are estimated to live within the NPAs.The document, which contains a complete listing of all 35 NPAs, can be accessed on DEQ's website (download at bottom). Also available online is a summary of comments received on the document during a 60-day public comment period and DEQ responses.The nitrate priority area ranking is used to prioritize the development and implementation of strategies to help reduce nitrate loading from land-use activities. In coordination with other agencies, DEQ assists local ground water quality advisory groups in developing ground water quality management strategies for NPAs.2020 Nitrate Priority Online Map Application (ArcGIS Enterprise 10.9.1)Idaho DEQ Nitrate in Ground WaterIdaho DEQ 2020 Nitrate Priority Area Delineation and Ranking Process (PDF)2020 Nitrate Priority Area Ranking Summary (PDF)

This dataset includes rivers and streams listed in Montana's 305(b)/303(d) Integrated Water Quality Report for the year noted in this map layers CYCLE attribute. The report lists waters which have been assessed as fully supporting all applicable beneficial uses, waters determined to be water quality impaired for one or more beneficial uses, and waters where the information collected to date is not sufficient to complete beneficial use support determinations. The 303(d) List, required by the federal Clean Water Act, focuses on waters in the state which have been assessed as having one or more of their beneficial uses impaired by human-caused pollutants/pollution. The geometry for each Assessment Unit stream in this dataset is based on the 1:24,000 High Resolution NHD. Data set is appropriate for 1:24,000 scale uses. To view detailed information for all impairments and related water variables in an interactive viewer, please visit the Montana DEQ Clean Water Act Information Center (CWAIC) mapping application located at - https://clean-water-act-information-center-mtdeq.hub.arcgis.com/.

Buffer areas shown in this map application are NOT to be used for legal purposes or for determining if a property falls within or out of a buffer zone. Contact the local Regional Office for determination. Data included in this application covers the Neuse River Basin, Tar Pamlico River Basin, Jordan Lake Watershed, Randleman Lake Watershed, Catawba River, and Goose Creek riparian buffer areas. The attribute table includes links for factsheets for each if available. Additional contact information will be available soon. If you have further questions about riparian buffers across the state, please see the Riparian Buffer Protection Program website or call (919) 807-6364.

The Pre-Regulatory Landfill (PRLF) program was established in 2007 to address pre-1983 non-industrial landfills and dumps. A pre-regulatory landfill is defined as any land area, whether publicly or privately owner, on which municipal solid waste disposal occurred prior to January 1, 1983, but not thereafter and does not include any landfill used primarily for industrial solid waste. The PRLF program conducts the assessment and remediation of these sites directly. Local governments may conduct the assessment work and seek reimbursement of expenses if the work was pre-approved by the Program.To learn more about the PRLF program, visit their website HERE

This feature service is for viewing Brownfields projects content and is updated continuously. This data set shows point locations of Brownfields Projects that have entered into the program to receive a Brownfields Agreement. The marker points shown reflect the current status of the project in its progression towards having a recorded Notice of Brownfields Property with a finalized Brownfields Agreement. Additional web links are also provided to view corresponding online project documentation and to download compliance forms.