Following is a list of freeware that provides information on the hazards, environmental quality, and control of stormwater. Before you access any software or apps, please read our disclaimer and permissions page if you haven't already done so.

Daily Streamflow Conditions Map of the United States
By US Geological Survey (USGS). Shows real-time streamflow conditions as measured at USGS gaging stations.

Envirofacts Warehouse
By US Environmental Protection Agency. Allows you to retrieve environmental information from EPA databases on Superfund sites, drinking water, toxic and air releases, hazardous waste and Biennial Reporting System data, water discharge permits, and grants information. Use online queries to retrieve data or generate maps of environmental information by choosing from several mapping applications available through EPA's Maps On Demand.

MetEd Modules
By Cooperative Program for Operational Meteorology, Education & Training (COMET). Modules of meteorology education courses as a webcast or web presentation. Topics include floods, wind, hazaroudous weather, forecasting, dust, dispersion modeling, and watersheds.

National Flood Summary
By US Geological Survey (USGS). The U.S. Geological Survey has made the National Flood Summary information from 1970-1998, including maps and data, available on the World Wide Web. The web site provides the public a tool to compare current or possible flood conditions with past historical flood information by state and year, as to magnitude, cause, loss of life, damage, and cost for this 28-year time period.

National Hydrologic Assessment
By National Weather Service. Check out the potential for flooding or drought in the United States.

National Management Measures to Control Nonpoint Source Pollution from Urban Areas
By US Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds. This guidance document is designed to help citizens and municipalities in urban areas protect bodies of water from polluted runoff that can result from everyday activities. The guidance also offers help to states for implementing their nonpoint source control programs and to municipalities for implementing their Phase II Storm Water Permit Programs.

National Water Information System (NWIS)
By US Geological Survey (USGS). Provides access to water-resources data collected at approximately 1.5 million sites in all 50 US States, the District of Columbia, and Puerto Rico. It includes information on the occurrence, quantity, quality, distribution, and movement of surface and underground waters.

Nonpoint Source Kid's Page
By US Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds. Interactive learning resources for kids to help them learn about nonpoint source pollution. Includes movies, slide shows, games, and more.

Search the EPA Internet
By US Environmental Protection Agency. Search the US Environmental Protection Agency's (EPA's) web site.

Storm Water Management Video
By Maine Department of Environmental Protection. This public service announcement about storm water management originated from the Maine Department of Environmental Protection and is now being used by several other city and state environmental agencies. It is part of a campaign to inform the public about storm water management and what individual citizens can do to help. The online version is provided by the Nevada Division of Environmental Protection.

TRI Comparative Analysis Tool -- Water Data Sources
By US Environmental Protection Agency, Office of Enforcement and Compliance Assurance. This TRI Comparative Analysis tool allows users to compare records from the Toxics Release Inventory (TRI) with those from the Permit Compliance System (PCS) and the ICIS-National Pollutant Discharge Elimination System (ICIS-NPDES) data systems; ICIS-NPDES is a modernized data system containing NPDES data for more than one half of the states.

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This page last updated on 2/13/18