| Description |
In June 2025, the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) participated in a multidisciplinary geoscientific field data collection at Midnight Pass and Milton Pass located along Florida's west-central coastline. These inlets were opened as a result of hurricanes Helene and Milton in 2024. Researchers with the Nearshore Extreme Events Reconnaissance Association (NEER, https://neerassociation.org/) conducted surveys of these inlets immediately following Hurricane Milton in 2024, and this data collected in 2025 is to support the continued monitoring of the evolution of the inlets (Stark and others, 2025). This metadata record describes the single-beam bathymetry surveys conducted by USGS SPCMSC at Milton Pass, Florida on June 26, 2025, under the USGS Field Activity Number (FAN) 2025-313-FA. The survey area encompassed the nearshore environment, the inlet, and the back bay waterway resulting in 3.41 square kilometers (km2) coverage at Milton Pass. The single-beam bathymetry was acquired using two 12-foot personal watercrafts (PWC), outfitted with high precision Global Navigation Satellite System (GNSS) receivers, motion reference units, and survey-grade single-beam echosounders (SBES). This data release provides point data (x, y, z) in two datums: 1) World Geodetic System 1984 (WGS84) realization G2296, Universal Transverse Mercator (UTM) zone 17 North (N) for the horizontal and WGS84 (G2296) ellipsoidal height in meters for the vertical; and 2) North American Datum of 1983 (NAD83) realization of 2011 for the horizontal, and North American Vertical Datum 1988 (NAVD88) orthometric height in meters with respect to GEOID18 for the vertical. Additional files include single-beam trackline shapefiles (.shp). For further information regarding data collection and/or processing steps, please see the metadata associated with this data release. [More]
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