Pecan Island () is an unincorporated community is located in Vermilion Parish, Louisiana, directly south of the southeast corner of White Lake, Louisiana, at the junction of two prehistoric beach ridges of a type known as cheniers,The Louisiana Journey By Terry L. Jones - Gibbs Smith, Jun 5, 2006 - p.10 that lie surrounded by coastal marsh. Pecan Island lies in the Texas-Louisiana Coastal MarshesDaigle, J.J., Griffith, G.E., Omernik, J.M. , Faulkner, P.L., McCulloh, R.P., Handley, L.R., Smith, L.M., and Chapman, S.S., 2006. Ecoregions of Louisiana, color poster with map, descriptive text, summary tables, and photographs; map scale 1:1,000,000, Washington, DC, U.S. Environmental Protection Agency. of southern Louisiana about north of the Gulf of Mexico. There exists minimal land in the region, with the island being "an old Gulf beach, composed of crushed shells and sand".Louisiana: A Guide to the State By Federal Writers' Project - US History Publishers, 1947 - p.443

Local geomorphology The community of Pecan Island, Louisiana, lies on the eponymous Pecan Island. The southern edge of the latter consists of a single, prominent west to east trending chenier, called Front Ridge, from which other cheniers branch of it in an northeasterly direction. The most prominent of these cheniers is known as Back Ridge. It is at the junction of Back and Front ridges that the community of Pecan Island lies. In addition from the northern side of Back Ridges, several addition smaller cheniers branch off of it.United States Geological Survey, 1951. Pecan Island Quadrangle, Louisiana-Vermilion Parish, 15 Minute Series (Topographic), 29092-E3-TF-062, DMA 7543 III-Series V785. Scale 1:62,500.United States Geological Survey, 1979. Pumpkin Islands Quadrangle. Louisiana-Vermilion Parish, 7.5 Minute Series Orthophotomap (Topographic), DMA 7543 III NE-Series V8850. Scale 1:24,000m.United States Geological Survey, 1979. Pecan Island Quadrangle. Louisiana-Vermilion Parish, 7.5 Minute Series Orthophotomap (Topographic), DMA 7543 III NW-Series V8850. Scale 1:24,000.

Front Ridge has a maximum elevation of about above sea level. It consists of a lens of shelly, fine sand overlying muddy brackish and salt marsh deposits. dating Radiocarbon ages of shells from Front Ridge range in age from 1,250 to 6,000 B.P. Gould and McFarlanGould, H.R. and McFarlan, Jr, E., 1959. Geologic history of the Chenier Plain, southwestern Louisiana. Gulf Coast Association of Geological Societies Transactions, 9, pp. 260-271. consider the Front Ridge segment of Pecan Island to be the eastern end of the longest continuous chenier-ridge trend, known as the Grand Chenier trend, within the Louisiana Chenier Plain. The Grand Chenier trend is considered to be part of a 1100-year-old shoreline. Based on the interpretation of the observed layering of and shells found in both the fine sand underlying muddy sediments, Front Ridge is an erosional (transgressive) shoreline similar to the modern Louisiana Chenier Plain coastline. It is evident that Front Ridge truncates the other cheniers, e.g. Back Ridge, Lost Island, and Kochs Ridge, that comprise Pecan Island.Coleman, J.M., 1966. Recent coastal sedimentation: central Louisiana Coast. Coastal Studies Institute Technical Report, 29. Baton Rouge. Louisiana State University. 73 pp.McBride, R.A., Anderson, L.C., Taylor, M.J., McGimsey, C. and Byrnes, M.R., 1997. Linear sand bodies in muddy environments: Geologic framework, sedimentary processes, and geoarchaeology of the southwestern Louisiana Chenier Plain. Friends of the Pleistocene South Central Cell. Field Guide. American Association of Petroleum Geologists Society for Sedimentary Geology (SEPM) Field Trip# 12, April 9 -11 , 1997. Friends of the Pleistocene South Central Cell. 151 pp., 2 plates.

Back Ridge consists of fine sand consisting of about 50 percent fine sand and 50 percent marine shell fragments. Unlike the Front Ridge, the shelly sands of the Back Ridge overlie muddy shallow marine or mudflat sediments. Younger marsh sediments overlie mudflat sediments and onlap onto the shelly beach sediments comprising Back Ridge. Radiocarbon ages from Black Ridges and associated, smaller cheniers range from about 1,600 to 4,200 years B.P. Back Ridge, Lost Island, Kochs Ridge and other cheniers branching off of Front Ridge are regarded as being regressive coastal spits.

Culture The town of Pecan island is inhabited largely by persons of Cajun ancestry, and has a Catholic Mission church, Sacred Heart, a Baptist church and a Methodist church. Since Hurricane Rita occurred only one store exists, which sells fuel, groceries and hunting supplies. Common family names in the area include Veazey, Bourque, Stelly, Guidry, Choate, Winch, Broussard, Morgan, Dyson, White, Lege, Harrington, Lee, and Miller. The town had been previously ravaged by Hurricane Audrey in 1957.

Pecan Island is part of the Abbeville Micropolitan Statistical Area

In August 2026, plans were announced by SpaceX to construct a launch site for its Starship rocket near the community on land previously owned by Exxon at a cost of around $100 billion.

Hurricane Rita Most residents evacuated under the threat of Hurricane Rita, which obliterated most of the homes there and forced the closure of the community's school - Pecan Island High School. As with most Gulf coastal towns, future growth will be regulated by FEMA construction guidelines following the 2005 hurricanes, meaning new homes will be somewhat more expensive to construct, due to the increased elevation requirement.Hurricane Rita Surge Inundation and Advisory Base Flood Elevation Maps - Federal Emergency Management Agency

Local events Pecan Island has a Mardi Gras and is bustling with duck hunters in the winter months.

Morgan effigy A carved deer antler figurine known as the "Morgan Effigy" was found in fill dirt taken from the nearby Morgan Mounds site. The location, a pre-Columbian Coastal Coles Creek culture archaeological site, was occupied between 700 and 1000 AD.Fuller, R. S., and Fuller, D.S., 1987. Excavations at Morgan: A Coles Creek Mound Complex in Coastal Louisiana. Lower Mississippi Survey Bulletin No. 11 Cambridge, Peabody Museum, Harvard University. 412 pp. The artistic stylization of the small sculpture shows it may have been a human death figure. The presence of bones in the same fill dirt means it was interred as a grave good, possibly with a prominent member of the community. It is the only known Coles Creek culture artwork to be found that is not made from ceramic.

Not only is Pecan island unique in the occurrence of the Morgan effigy, but the small chenier complex that it lies upon is also unique among the cheniers of the Louisiana Chenier Plain for the diversity and complexity of prehistoric cultural deposits. It almost contains 60% of the Native American mounds reported from the Louisiana Chenier Plain. Its local Native American mounds are also organized in more complex arrangements than found elsewhere in the Louisiana Chenier Plain. Finally, of the entire Louisiana Chenier Plain, Pecan island contains the only known prehistoric cemeteries for the area's early Copell and Veazey occupations; the only known mounds dating to the Marksville period; and the area's largest, most complex Coles Creek mound site. The reason that Pecan island was the locus of so much prehistoric activity is unknown.

References

External links Vermilion Parish Tourist Commission Vermilion Historical Society