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 43: Location map for the southwest show of Lake Pontchartrain.

Legend Swamp Any forested area normally subject to inundation through part of the growing season or with permanent or near-permanent standing water. Swamp with Fresh Marsh An area of swamp at the shoreline that contains a fresh marsh (salinity less than 0.5 ppt) behind the shoreline. Bank Natural riverine or lacustrine bank with grass and trees. Fresh Marsh Any unforested, vegetated area normally subject to inundation or tidal action at any time sufficient to support wetland-dependent, emergent vegetation with salinity less than 0.5 ppt. Intermediate 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 0.5-8 ppt. Stepped Seawall A solid concrete revetment along a shoreline in the form of a series of steps. 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. Sand Beach A beach of high relief made up predominately of shell.

Figure 44: Shoreline types of the southwest shore of Lake Pontchartrain. (Click on a letter to see a photograph of the shoreline.)