| Port Mansfield Channel | |
|---|---|
 Port Mansfield Channel | |
 Mansfield Cut at Padre Island | |
  Port Mansfield Channel Entrance | |
| Location | |
| Country | United States |
| Coordinates | 26°33′39″N 97°20′54″W / 26.5609°N 97.34831°W |
| Specifications | |
| Length | 15.3 km (9.5 miles) |
| Navigation authority |
|
| Port Mansfield Marinas | |
| History | |
| Former names |
|
| Modern name | Port Mansfield Channel[1] |
| Current owner | Willacy County Navigation District |
| Other engineer(s) | Army Corps of Engineers |
| Construction began | September 1957 |
| Date restored | July 1962 |
| Topo Map | Port Mansfield Channel (Map). |
| Geography | |
| Start point | Gulf of Mexico |
| End point | Red Fish Bay, Texas (Map). |
| Beginning coordinates | 26°33′51″N 97°16′07″W / 26.564045°N 97.268697°W |
| Ending coordinates | 26°33′32″N 97°24′04″W / 26.558954°N 97.401091°W |
| Connects to | |
| GNIS feature ID | 1344370 |
Port Mansfield Channel or Mansfield Cut is an artificial waterway encompassing the Laguna Madre positioned at the 97th meridian west on the earth's longest barrier island known as Padre Island.[2][3] During Post–World War II, the tidal inlet was dredged as a private channel differentiating North Padre Island better known as Padre Island National Seashore and South Padre Island.[4] The navigable waterway was channeled during the late 1950s ceremoniously cresting the intertidal zone of the Gulf of Mexico by September 1957 on the Texas Gulf Coast.[5][6]
The marginal sea inlet was defined by wave-dissipating concrete blocks similarly referred to as tetrapods protracting into the Gulf of Mexico at Padre Island. The breakwater structure was severely dilapidated during the 1957 Atlantic hurricane season with the Bay of Campeche spawning Hurricane Audrey and Tropical Storm Esther engulfing the existing jetty harbor entrance on Padre Island.[7]
In 1962, the United States Army Corps of Engineers devised an expansive coastal engineered jetty system resiliently controlling coastal sediment transport, longshore drift, and shoaling during diverse gravity wave, wind wave, and inimical oceanic wave dispersion.[8] The breakwater jetties were constructed with granite boulders situated as an eastern protrusion of 580 yards (530 m) and 825 yards (754 m) from the Padre Island shoreline into the Gulf of Mexico continental margin. The granite piers have a divisionary distance of 315 yards (288 m) permitting navigable transit passage from the brackish water of the Laguna Madre to the easterly Gulf of Mexico horizon.[9] The coastal management framework was collaterally conformable given the imminent intervals of low-pressure weather systems and storm surges charged by the gradient intensity of tropical cyclones encroaching the Texas seacoast.
- ^ Port Mansfield Channel in Geonames.org (cc-by)
- ^ "Northern Part of Laguna Madre ~ Chart 1287". NOAA Office of Coast Survey. United States Coast and Geodetic Survey. National Oceanic and Atmospheric Administration. October 1923.
- ^ "Southern Part of Laguna Madre ~ Chart 1288". NOAA Office of Coast Survey. United States Coast and Geodetic Survey. National Oceanic and Atmospheric Administration. December 1933.
- ^ "Padre Island National Seashore Act of 1962 ~ P.L. 87-712". 76 Stat. 651 ~ Senate Bill 4. USLaw.Link. September 28, 1962.
- ^ Leatherwood, Art. "Port Mansfield Channel". Handbook of Texas Online. Texas State Historical Association.
- ^ Kieslich, James M. (May 1, 1977). "DTIC ADA042651: A Case History of Port Mansfield Channel, Texas" [Figure 4: Port Mansfield Channel, 15 March 1957]. Internet Archive. Defense Technical Information Center. p. 17.
- ^ Kieslich, James M. (May 1, 1977). "DTIC ADA042651: A Case History of Port Mansfield Channel, Texas" [Figure 5: Port Mansfield Channel Entrance, November 1957]. Internet Archive. Defense Technical Information Center. p. 18.
- ^ "Senator Allen J. Ellender – Public Works Assessment Statement – Port Mansfield Director Charles R. Johnson" [Public Works Appropriations, 1960 ~ U.S. Senate, Eighty-sixth Congress, H.R. 7509 – Making Appropriations for Civil Functions Administered by the Department of the Army]. HathiTrust Digital Library. U.S. Government Printing Office. p. 2150. OCLC 9711636.
- ^ Kieslich, James M. (May 1, 1977). "DTIC ADA042651: A Case History of Port Mansfield Channel, Texas" [Figure E-5: Port Mansfield Channel Entrance, January and July 1962]. Internet Archive. Defense Technical Information Center. p. 60.