- Ask WATERS
Ask WATERS answers multi-program questions that draw on information from the databases linked through WATERS. This tool generates cross-program calculations, examines spatial relationships between programs, and performs nationwide analyses. Ask WATERS includes both a Simple and Expert Query Tool. The Simple Query Tool provides built queries of frequently asked questions that a user may run for a State, Region, or the Nation. The Expert Query Tool is a web-based application that allows a user to create their own queries to display or extract data concerning impaired and assessed waters and associated, approved Total Maximum Daily Loads.
- How’s My Waterway
A user-friendly search tool that retrieves state-reported water quality conditions from EPA data systems for a user-defined local search area, providing map and list results with simple and non-technical descriptions.
- MyWATERS Mapper
MyWATERS Mapper dynamically displays snapshots of EPA Office of Water program data. This version of MyWATERS Mapper depicts the status of NPDES permits for each State; summary information from the Clean Watershed Needs Survey; and water quality assessments. Future versions will include other Office of Water Program Snapshots. MyWATERS Mapper also contains water-related geographic themes such as 12-digit watersheds, the national stream network known as the National Hydrography Dataset, and other water-related map layers. MyWATERS Mapper enables you to create customized maps at national and local scales.
- NHDPlus Tools
NHDPlus Tools is a collection of ArcGIS extensions provided to assist in the understanding and use of NHDPlus data and in the development of NHDPlus applications and tools.
- Nitrogen and Phosphorus Pollution Data Access Tool (NPDAT)
The EPA Nitrogen and Phosphorus Pollution Data Access Tool (NPDAT) is a Web-based tool intended to help states develop effective strategies for reducing nitrogen and phosphorus pollution. The NPDAT consists of an introductory website, geospatial viewer, and data download tables.
- HEM Tool
The Hydrography Event Management (HEM) Tool is now available to create NHD events for various EPA programs. Click to learn more about the HEM Tool.
- HEM to NHDEvent XML Conversion Tool (HEM2XML)
The HEM to NHDEvent XML Conversion Tool (HEM2XML) takes a Hydrography Event Management (HEM) 2.2 created file geodatabase and exports the events to an Extensible Markup Language (XML) file that matches the Exchange Network hosted NHDEvent Exit schema format.
- Viewing WATERS Data using Google Earth (WATERS KMZ)
WATERSKMZ is a compressed Keyhole Markup Language (KML) file that provides users with easy access to geospatial WATERS data and services using Google Earth.
- WATERS Web Services
The WATERS web services are database and web based services providing user application friendly interfaces to complex analyses. These services make extensive use of the NHD and indexed program data in the RAD, and also integrate other WATERS program data in selected services. Designed as modular units, the services are being developed within a common architecture and each service will become available as it is completed and tested.