Offline base map data provided by Natural Earth II.
This tool provides general geographic information services (GIS) and geolocation information. Various navigational charts are provided as well as GIS map layers.
Most of these layers will require network access (WiFi or cellular) in order to view them. RNC navigational charts of the Vermillion Bay region in southern Louisiana are accessible while offline. We hope to expand our offline support in the future.
* These maps, charts, and layers are provided "as is" from third-party sources. We can not guarantee the accuracy or usefulness of these items, and these items are not suitable replacements for any legal requirements to have access to similar items. For more details, please see the Disclaimer page found in the main menu.
Electronic Navigational Charts: NOAA Electronic Navigational Charts (ENC) is a vector database of chart features built to the International Hydrographic Office’s S-57 standard. NOAA’s Office of Coast Survey produces and authorizes NOAA ENC data in U.S. waters. NOAA ENCs support real-time navigation, as well as the collision and grounding avoidance needs of the mariner.
Raster Navigational Charts: NOAA Raster Navigation charts (NOAA RNC) are the full-color digital image equivalent of NOAA paper charts.
Alternative Oyster Culture (AOC) Permits: (This layer may be difficult to see on the map due to there being few permits covering a very small area!) This data layer shows areas where people have obtained permits for alternative off-bottom oyster aquaculture.
Artificial Reef Sites: This data layer marks the boundaries of artificial reef sites built through the Louisiana Artificial Reef Program.
Commercial Fisheries Closures: This data layer marks the boundaries of any commercial fishery closures, usually due to a pollution incident. The LDWF normally decides the closure boundaries.
Department of Health and Hospitals (DHH) Classification Line: The classification line shows the Molluscan Shellfish Growing areas for different times of year. LDWF Enforcement and the oyster industry use the line to monitor pollution.
Department of Health and Hospitals (DHH) Harvest Area Grid (HAG): The DHH splits the Louisiana coastal zone into 28 grids to demarcate Louisiana oyster harvest areas.
Double Rig Line: According to state statute (LA R.S. 56:495.1), the double-rig line describes the waters in Breton and Chandeleur Sounds where one or two trawls, either both of which cannot exceed 65 feet along the corkline and 82 feet along the lead line in addition to one test trawl may be used. This is often used for shrimp management purposes.
NOAA Exclusive Economic Zone (EEZ): The federally-designated U.S. Exclusive Economic Zone extends from 3 – 200 nautical miles offshore. Within this zone, “the U.S. has sovereign rights for the purpose of exploring, exploiting, conserving and managing natural resources, whether living and nonliving, of the seabed and subsoil and the superjacent waters and with regard to other activities for the economic exploitation and exploration of the zone, such as the production of energy from the water, currents and winds.”
National Marine Fisheries Service (NMFS) Grid: This data layer shows the grid used by the NMFS to locate federal activities happening in the water, such as emergency closures, and to issue trip tickets.
Oyster Leases: This data layer shows the section of Louisiana water bottom that has been leased to individuals for the purpose of commercially harvesting oysters.
Public Seed Grounds / Reservations: This data layers shows the public areas of Louisiana water bottoms that have been dedicated to receiving cultch in order to produce oyster spat, which is then extracted by individuals to put into their oyster leases.
Revised Gulfward Boundary (9 Nautical Mile Line): Most state territorial waters extend three nautical miles from the coastline, with the exception of Texas, western Florida, and Puerto Rico. In 2012, the LDWF approved the extension of state territorial waters from three nautical miles to nine nautical miles offshore. This data layer shows the revised Louisiana Gulfward boundary of nine nautical miles.
Saltwater/ Freshwater Line: In order to regulate certain fisheries, the Louisiana legislature legally defined the freshwater and saltwater areas of the state by describing a line from the Texas state line, easterly to the Mississippi state line. The areas south of the described line, plus a number of saltwater lakes and waterways, were designated as saltwater areas and all other areas north of the described line were designated as freshwater areas. Persons fishing and/or possessing saltwater fish in these areas are required to have a saltwater fishing license in addition to the basic fishing license.
Saltwater Marina Registry Locations: This data layer shows the coastal saltwater marinas registered with the LDWF.
Inside/Outside Shrimp Line: This line designates the shrimp fishery inshore and offshore waters. The line is defined in Louisiana statute (LA R.S. 56:495(A) ) and begins at the Texas/Louisiana border at Sabine Pass and terminates at the Louisiana/Mississippi border north of the Chandeleur Islands.
Lake Pontchartrain Shrimp Sanctuary: (This layer features a small line in Lake Ponchartrain.) This line demarcates an area at the southern edge of Lake Pontchartain where shrimping is not allowed.
Shrimp Zones (Seasonal Closures): This data layer shows the division of different sub-basins for shrimp management purposes.
Trip Ticket SubBasins: This data layer shows the numbers that correspond with LDWF-defined sub-basins where trip tickets are filed.