Environmental Atlas of the Lake Pontchartrain Basin

	Basin Geology: Geology | Quarternary Framework | Geomorphology | Bathymetry | Geologic Resources

Basin Geology - Geomorphology

• Shoreline Types of the Lake Pontchartrain Basin - Summary
• Shoreline Types
  • Lake Maurepas
  • Pass Manchac
  • Lake Pontchartrain - Southwest Shore
  • Lake Pontchartrain - Southeast Shore
  • Lake Pontchartrain - North Shore
  • Lake Borgne

Figure 49: Location map for Lake Borgne.

Legend Shell Beach A beach of high relief made up predominately of shell. Sand Beach A beach made up of fine or coarse grain sand. Brackish Marsh Any unforested, vegetated area normally subject to inundation or tidal action at any time sufficient to support wetland-development, emergent vegetation with salinity between 8-16 ppt. Salt Marsh Any unforested, vegetated area normally subject to inundation or tidal action at any time sufficient to support wetland-development, emergent vegetation with salinity between 16-40 ppt. Riprap Armor Embankment or revetment along a shoreline reinforced by things thrown together without order in the form of broken concrete, concrete blocks, old pilings, rubble, etc. to resist erosion. Bulkhead A wood, steel, or concrete wall along a waterfront. Can be adjacent to the land as a retaining wall or separate from it as a seawall to provide wave protection and resist erosion.

Figure 50: Shoreline types of Lake Borgne. (Click on a letter to see a photograph of the shoreline.)