Conrad Blucher Institute, Texas A&M University-Corpus Christi2022-04-202022-04-202021Conrad Blucher Institute. 2021. Shamrock Island Benchmark Sketch data. Corpus Christi: Texas A&M University-Corpus Christi.https://hdl.handle.net/1969.6/90485Benchmark Sketch of Shamrock Island, Station Number: 877-5422, drawn by Elisandro Leo. Date: 08/25/1992.en-USAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Map