Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Operational Oceanographic Products and Services (CO-OPS), 200902, NOAA Water Level (Tidal) Data of 205 Stations for the Coastal United States and Other Non-U.S. Sites: NOAA's Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), Silver Spring, MD.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.001. Longitudes are given to the nearest 0.001. Latitude and longitude values are specified in Decimal Degrees.
NOAA's Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS)
301-713-2981 (voice)
301-713-4392 (FAX)
co-ops.userservices@noaa.gov Hours: 0900 - 1700, Monday to Friday, EST
The National Water Level Observation Network is a key part of the NOAA Tsunami Warning System and the NOAA Storm Surge Warning System. NWLON stations support Physical Oceanographic Real-Time Systems (PORTS) in major ports and harbors. NWLON stations have standard configurations of water level sensors (including backup sensors), backup and primary data-collection platforms, solar panel power, GOES satellite radios, and telephone modems. Sensors are calibrated and vertically referenced to nearby networks of benchmarks. The data continuity, the vertical stability and careful referencing of NWLON stations have enabled the data to be used to estimate relative sea-level trends for the nation.
NOAA's Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), Unknown, National Water Level Observation Network: NOAA's Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), Silver Spring, MD.Online Links:
Person who carried out this activity:
301-713-2981 (voice)
301-713-4392 (FAX)
co-ops.userservices@noaa.gov Hours: 0900 - 1700, Monday to Friday, EST
One hundred and eighty one, one-second water level samples centered on each tenth of an hour are averaged, a three standard deviation outlier rejection test applied, the mean and standard deviation is recalculated and reported along with the number of outliers.
Preliminary Data Preliminary data have not been subjected to the National Ocean Service's quality control or quality assurance procedures and do not meet the criteria and standards of official National Ocean Service data. They are released for limited public use as preliminary data to be used only with appropriate caution. Predicted Tidal Data The accuracy of the tide predictions is different for each location. Periodically we do a comparison of the predicted tides vs. the observed tides for a calendar year. The information generated is compiled in a Tide Prediction Accuracy Table. We work to insure that the predictions are as accurate as possible. However, we can only predict the astronomical tides, we cannot predict the effect that wind, rain, freshwater runoff, and other short-term meteorological events will have on the tides.
Preliminary Data Preliminary data have not been subjected to the National Ocean Service's quality control or quality assurance procedures and do not meet the criteria and standards of official National Ocean Service data. They are released for limited public use as preliminary data to be used only with appropriate caution. Predicted Tidal Data The accuracy of the tide predictions is different for each location. Periodically we do a comparison of the predicted tides vs. the observed tides for a calendar year. The information generated is compiled in a Tide Prediction Accuracy Table. We work to insure that the predictions are as accurate as possible. However, we can only predict the astronomical tides, we cannot predict the effect that wind, rain, freshwater runoff, and other short-term meteorological events will have on the tides. In general, predictions for stations along the outer coast are more accurate than those for stations farther inland; along a river, or in a bay or other estuary. Inland stations tend to have a stronger non-tidal influence; that is, they are more susceptible to the effects of wind and other meteorological effects than stations along the outer coast. An example of an inland station which is difficult to predict is Baltimore, Maryland. This station is located at the northern end of Chesapeake Bay. Winds, which blow along the length of the bay, have been known to cause water levels to be 1-2 feet above or below the predicted tides. Stations in relatively shallow water, or with a small tidal range, are also highly susceptible to meteorological effects and thus difficult to accurately predict. At these stations, short-term weather events can completely mask the astronomical tides. Many of the stations along the western Gulf of Mexico fall into this category. An example is Galveston, Texas. This station is in a bay which is relatively shallow and has a small opening to the sea. At this station it is possible for meteorological events to delay or
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
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- Preliminary Data Preliminary data have not been subjected to the National Ocean Service's quality control or quality assurance procedures and do not meet the criteria and standards of official National Ocean Service data. They are released for limited public use as preliminary data to be used only with appropriate caution. Predicted Tidal Data The accuracy of the tide predictions is different for each location. Periodically we do a comparison of the predicted tides vs. the observed tides for a calendar year. The information generated is compiled in a Tide Prediction Accuracy Table. We work to insure that the predictions are as accurate as possible. However, we can only predict the astronomical tides, we cannot predict the effect that wind, rain, freshwater runoff, and other short-term meteorological events will have on the tides.
301-713-2981 (voice)
301-713-4392 (FAX)
co-ops.userservices@noaa.gov Hours: 0900 - 1700, Monday to Friday, EST
Downloadable Data
Preliminary DataPreliminary data have not been subjected to the National Ocean Service's quality control or quality assurance procedures and do not meet the criteria and standards of official National Ocean Service data. They are released for limited public use as preliminary data to be used only with appropriate caution.Predicted Tidal DataThe accuracy of the tide predictions is different for each location. Periodically we do a comparison of the predicted tides vs the observed tides for a calendar year. The information generated is compiled in a Tide Prediction Accuracy Table. We work to insure that the predictions are as accurate as possible. However, we can only predict the astronomical tides, we cannot predict the effect that wind, rain, freshwater runoff, and other short-term meteorological events will have on the tides.In general, predictions for stations along the outer coast are more accurate than those for stations farther inland; along a river, or in a bay or other estuary. Inland stations tend to have a stronger non-tidal influence; that is, they are more susceptible to the effects of wind and other meteorological effects than stations along the outer coast. An example of an inland station which is difficult to predict is Baltimore, Maryland. This station is located at the northern end of Chesapeake Bay. Winds which blow along the length of the bay have been known to cause water levels to be 1-2 feet above or below the predicted tides.Stations in relatively shallow water, or with a small tidal range, are also highly susceptible to meteorological effects and thus difficult to accurately predict. At these stations, short-term weather events can completely mask the astronomical tides. Many of the stations along the western Gulf of Mexico fall into this category. An example is Galveston, Texas. This station is in a bay which is relatively shallow and has a small opening to the sea. At this station it is possible for meteorological events to delay or accelerate the arrival of the predicted tides by an hour or more.
| Data format: | ASCII |
|---|---|
| Network links: |
<http://tidesandcurrents.noaa.gov/station_retrieve.shtml?type=Tide+Data> |
| Media you can order: |
CD-ROM
(format Data burned to CD-ROM)
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There is a fee for services rendered by CO-OPS. A request for water level data, benchmark information, Great Lakes data and information typically costs $48.00.
301-713-2981 (voice)
301-713-4392 (FAX)
co-ops.userservices@noaa.gov Hours: 0900 - 1700, Monday to Friday, EST