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Memphis Lake (Lake Showme) near Memphis, Missouri, 2021

Metadata Updated: July 6, 2024

Water supply lakes are the primary source of water for many communities in northern and western Missouri. Therefore, accurate and up-to-date estimates of lake capacity are important for managing and predicting adequate water supply. Many of the water supply lakes in Missouri were previously surveyed by the U.S. Geological Survey in the early 2000s (Richards, 2013) and in 2013 (Huizinga, 2014); however, years of potential sedimentation may have resulted in reduced water storage capacity. Periodic bathymetric surveys are useful to update the area/capacity table and to determine changes in the bathymetric surface. Memphis Lake (locally known as Lake Showme) is a water supply lake used by the city of Memphis in northeastern Missouri. The surface area of Memphis Lake is about 294 acres at the full pool level of the primary spillway (773.8 feet above the North American Vertical Datum of 1988). A previous bathymetric survey was completed in 2002 with a single-beam echosounder. In April 2021, the U.S. Geological Survey, in cooperation with the Missouri Department of Natural Resources and in collaboration with the City of Memphis, completed a bathymetric survey of Memphis Lake using a multibeam echosounder. The water-surface elevation during the survey was about 769.8 feet. The echosounder data can be combined with light detection and ranging (lidar) data to prepare a bathymetric map and a surface area and capacity table for the lake. The gridded bathymetric point data ( were computed on a 1.64-foot (0.50-meter) grid using the Combined Uncertainty and Bathymetry Estimator (CUBE) method, which is used as the source of points to create the bathymetric surface. Bathymetric quality-assurance data ( were collected to evaluate the vertical accuracy of the gridded bathymetric point data. Each of these two zip files contains a shapefile with an attribute table. Attribute/column labels of each table are described in the "Entity and attribute" section of the metadata file. References Cited: Huizinga, R.J., 2014, Bathymetric surveys and area/capacity tables of water-supply reservoirs for the city of Cameron, Missouri, July 2013: U.S. Geological Survey Open-File Report 2014–1005, 15 p., Richards, J.M., 2013, Bathymetric surveys of selected lakes in Missouri—2000–2008: U.S. Geological Survey Open-File Report 2013–1101, 9 p. with appendix,

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date May 31, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date May 31, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:62e19a6fd34e10763b59914e
Data Last Modified 20231010
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 9e506b25-cdb9-4c58-8f08-7040e28a5e36
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -92.2407,40.4342,-92.2171,40.4471
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash f9fe422a1058766f1deae3c607618a08ba9425bc2d4150f7a2dfabc1454ce771
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -92.2407, 40.4342, -92.2407, 40.4471, -92.2171, 40.4471, -92.2171, 40.4342, -92.2407, 40.4342}

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