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Each zipped file contains range monument locations, elevation and azimuth information used to reference beach profile surveys. The locations are used as reference marks and do not necessarily correspond to physical monuments found in the field. All location information is provided in NAD83/90 horizontal datum and NAVD1988 vertical datum. (Note: the links below open in a separate window)
Each zipped file contains "A" Monument location information used to control beach profile surveys. These 2nd order monuments are maintained by the Water Resource Management (WRM) - Beaches and Coastal Systems program and recorded in the county in which they are located. All information is provided in NAD83/90 horizontal datum and NAVD1988 vertical datum. (Note: the links below open in a separate window.)
High Precision Vertical Control Network Model
It is the intent of the Department of Environmental Protection, WRM Beaches and Coastal Systems program in cooperation with University of Florida to apply these standards to develop and implement a GPS-derived vertical control network with improved vertical accuracies along shore for all coastal permitting and project monitoring activities. As part of this effort, University of Florida researchers, in collaboration with the WRM Beaches and Coastal Systems (BCS) staff members, collected and adjusted GPS L1/L2 observations for the four established Coastal Regions Southeast Atlantic Coast (Brevard .Indian River, Saint Lucie, Martin, Broward, Dade Counties), Northeast Atlantic Coast (Nassau, Duval, Saint John, Flagler, Volusia Counties), Northwest Gulf of Mexico Coast (Escambia, Santa Rosa, Okaloosa, Walton, Bay, Gulf, Franklin Counties), and the Southwest Gulf of Mexico Coast (Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier Counties). The four provided reports give the results of the GPS observations and adjustment results and provides a supplemental horizontal and vertical control network along Florida’s coastline for use with Coastal Construction Control Line permitting and project monitoring activities.
Network Design And Adjustment Strategy
The strategy for the development of this high-accuracy elevations network along the coastline hinges on GPS Observations for two networks: Tier-1 aims for a 2 centimeter ellipsoid height accuracy and all Stations are tied directly to the CORS network.
Tier-2 consists of a dense network of stations whose target is 5 centimeters of ellipsoid height accuracy, tied to the Tier-1 stations. Tier-1 stations are observed over multiple sessions of at least two hours each while Tier-2 stations are observed along shorter baselines using shorter sessions, forming many independent and redundant interconnections.
Positions of Tier-1 GPS network were processed using the Online User Positioning Service (OPUS), which is a web-based static GPS processing engine built around the PAGES software.
Tier-2 network observations were processed by FDEP using Ashtech Solutions Software, and then adjusted by a least-squares method using Ashtech GNSS software suite. Only NAD83 ellipsoid heights are adjusted, final orthometric heights referenced to NAVD88 are computed using GEOID03 – the latest geoid model available from NOAA/NGS .
For a copy of the above Supplemental Control Information, please see the High Precision Vertical Control Network Model document.
For more information about Regional Coastal Monitoring Data staff phone numbers can be found on our Staff Contacts page.
Coastal Surveying & Mapping Links
Last updated: April 12, 2017
2600 Blair Stone Road - M.S. 3522
Tallahassee, Florida 32399 850-245-7669 (phone) / 850-245-8356 (fax)