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The National Water Prediction Service (NWPS) River Gauge System<\/b>\n is a web service that is an essential component of our Climate, Water, and\n Weather Services. NWPS layers are generated by web based accurate hydrological\n data and information for rich forecast products. They display the magnitude and\n uncertainty of occurrence of floods or droughts, from hours to days and months,\n in advance. These graphical products are useful information and planning tools\n for many economic and emergency managers. These products will enable government\n agencies, private institutions, and individuals to make more informed decisions\n about risk-based policies and actions to mitigate the dangers posed by floods\n and droughts. NWPS replace the AHAPS program. Weather influences our economic and social lives in many ways. Severe\n weather can have impact on revenues and profits of businesses, large and small.\n Weather can also disrupt and disorganize communities. As our nation's\n population grows and infrastructure costs increase, natural disasters can\n threaten social stability. Weather forecasting was initially developed in\n response to the need of societies to protect themselves from storms, severe\n heat and cold, floods, etc., and minimize consequent economic losses. It is\n estimated that inland flooding claims 133 lives and property losses from flooding\n exceed $4 billion in an average year in the U.S. The National Weather Service\n (NWS) is our nation's agency entrusted with the mission to protect life and\n property and to enhance the economy.<\/p>\n \n

Using sophisticated computer models and large amounts of data from a wide variety of\n sources such as super computers, automated gauges, geostationary (GOES)\n satellites, Doppler radars, weather observation stations, and the computer and\n communications system, called the Advanced Weather Interactive Processing\n System (AWIPS), the NWS provides hydrologic forecasts for almost 4,000\n locations across the United States. These forecasts are developed by our River\n Forecast centers and distributed by our field offices for a wide range of\n customers. The majority of the observed water\n level data displayed on the NWPS web service originates from the United States\n Geological Survey's (USGS) National Streamflow Information\n Program<\/a> which maintains a national network of stream gauges. In addition, real-time water\n level information is collected from other federal, state, and local stream gage\n networks.<\/p>\n \n

The data from water level gauges around the country is gathered by the Hydrometeorological\n Automated Data System (HADS)<\/i><\/b>, operated by the NWS Office of Hydrologic\n Development. HADS is a data acquisition, data processing, and data distribution\n system. HADS acquires and processes raw hydrological and meteorological\n observational data from thousands of ground-based Data Collection Platforms (DCPs)\n owned and operated by hundreds of federal, state, and local agencies around the\n United States. Following the processing of the raw data, HADS delivers the\n observational data to the Weather Forecast Offices (WFOs) and River Forecast\n Centers (RFCs) in the form of collective data products tailored for each\n office's use. The WFOs and RFCs subsequently use the data in their hydrologic\n models and to create the informational displays viewed on the NWPS web pages.<\/p>\n \n

NWPS forecast products are a basis for operation and management of flood-control\n structures. Emergency management officials at local and state levels use these\n forecasts to fight floods, evacuate residents, and to take other measures to\n mitigate the impact of flooding. As the population grows, people increasingly\n choose to live near water, creating an increased need for the NWS to educate\n the public about flood hazards and to improve flood forecasts. These products\n can be used by a wide range of people, such as barge operators, power\n companies, recreational users, farmers, households, businesses, and\n environmentalists.<\/p>\n \n

Brief Background of The Products<\/b>
\n Impelled by experiences with major floods in 1993 in the Midwest, the Des Moines river\n basin was selected as a test site for NWPS product development. The successful\n demonstration of NWPS on the Des Moines river was favorably received by local\n water resource and emergency management agencies. The devastating floods in the\n upper Midwest and Plains states in 1997 provided an increased sense of urgency.\n The NWS began NWPS implementation at our offices in Wisconsin, Minnesota,\n Michigan, Iowa, Missouri and North Dakota. NWPS was quickly expanded to include\n tributaries within the Ohio River basin in parts of Kentucky, Ohio, and western\n Pennsylvania. Nationwide implementation is currently underway, and NWPS is\n available today at over 2,500 locations from coast to coast, including\n Alaska. While floods are impossible to prevent completely and there is not a way to guarantee protection of property,\n the NWS and other federal, state, and local agencies have proved the loss of\n life can be greatly reduced with better forecasting.<\/p>\n \n

The Components of NWPS<\/b>
\n The current group of NWPS products covers forecast periods ranging from hours to\n months. It also includes valuable information about the chances of flood or\n drought. This information is presented through user-friendly graphical\n products. The products are identified by the logo. The information, such as the\n flood forecast level to which a river will rise and when it is likely to reach\n its peak or crest, is shown through hydrographs. Other information includes:
\n \n The chance or probability of a river exceeding minor, moderate, or major flooding,
\n \n The chance of a river exceeding certain level, volume, and flow of water at\n specific points on the river during 90-day periods.

\n \n It is highly encouraged add other web service that that provides information about\n major roads, railways, landmarks, likely to be flooded, the levels of past\n floods, etc around surrounding the forecast points.\n \n The NWS National Viewer\u2019s water site<\/a> is one such asset.<\/p>\n \n

Find Out More about NWPS<\/b>
\n Additional information on National Water Prediction Service may be obtained on line at\n NWPS Reference Materials<\/a><\/p>\n \n

Update Frequency:<\/b> 30 Minutes<\/p> \n \n RIVER GAUGE STAGES<\/b>\n \n \n \n \n \n \n \n \n \n \n \n
\n

Forecasted Stage<\/span><\/b><\/p>\n <\/td>\n

\n

Description<\/span><\/b><\/p>\n <\/td>\n <\/tr>\n

\n

Major Flood<\/span><\/p>\n <\/td>\n

\n

Extensive inundation of structures and\n roads, significant evacuations of people and/or transfer of property to\n higher elevations.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Moderate Flood<\/span><\/p>\n <\/td>\n

\n

Some inundation of structures and roads\n near stream, evacuations of people and/or transfer of property to higher\n elevations.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Minor Flood<\/span><\/p>\n <\/td>\n

\n

Minimal or no property damage, but possibly\n some public threat (e.g., inundation of roads).<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Action<\/span><\/p>\n <\/td>\n

\n

An established gage height which when\n reached by a rising stream, lake, or reservoir represents the level where\n action is taken in preparation for possible significant hydrologic activity<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

No Flood<\/span><\/p>\n <\/td>\n

\n

No flooding is indicated.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Flood Category Not Defined<\/span><\/p>\n <\/td>\n

\n

Gauge does not have thresholds defined to\n indicate severity of flood impacts.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Low Water Threshold<\/span><\/p>\n <\/td>\n

\n

The stage or flow at which low water levels\n begins to have significant negative impacts on a water-related industry or\n user community.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Data Not Current<\/span><\/p>\n <\/td>\n

\n

Gauge does not have current data.<\/span><\/p>\n <\/td>\n <\/tr>\n

\n

Out of Service<\/span><\/p>\n <\/td>\n

\n

Gauge has been disabled.<\/span><\/p>\n <\/td>\n <\/tr>\n <\/table>\n

Link to NWPS Reference Web Sites:<\/b>
\n NWPS Graphical Page<\/a>
\n NWPS API Page<\/a>
\n NWPS Facts Sheet<\/a>
\n NWPS User Guide<\/a>
\n Office of Water Prediction Operations Page<\/a>
\n NWC Product Description Page<\/a><\/p> \n

Link to <\/b>National Weather Service Water Viewer<\/i><\/a>

\n Link to <\/b> Data Downloads (shapefiles)<\/a>

\n Link to <\/b>metadata<\/i><\/a>

\n Questions/Concerns about the service, please contact the DISS GIS<\/i><\/b><\/a> team.
<\/p> \n

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