Lake Koocanusa Maximum and Minimum Pool Elevation Contours, Lincoln County, Montana

Dates

Publication Date: 2021-04-03
Start Date: 2016
End Date: 2018

Citation

Fosness, R.L., and Dudunake, T.J., 2021, U.S. Geological Survey and U.S. Army Corps of Engineers Bathymetric Survey of Lake Koocanusa, Lincoln County, Montana, 2016-2018 (ver. 2.0, August 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P9DOPNSN.

Summary

In 2016, the U.S. Army Corps of Engineers (USACE) started collecting high-resolution multibeam echosounder (MBES) data on Lake Koocanusa. The survey originated near the International Boundary (River Mile (RM) 271.0) and extended down the reservoir, hereinafter referred to as downstream, about 1.4 miles downstream of the Montana 37 Highway Bridge near Boulder Creek (about RM 253). USACE continued the survey in 2017, completing a reach that extended from about RM 253 downstream to near Tweed Creek (RM 244.5). In 2018, the U.S. Geological Survey (USGS) Idaho Water Science Center completed the remaining portion of the reservoir from RM 244.5 downstream to Libby Dam (RM 219.9). The MBES data collected in 2016 and 2017 by the USACE was combined [...]

Summary

In 2016, the U.S. Army Corps of Engineers (USACE) started collecting high-resolution multibeam echosounder (MBES) data on Lake Koocanusa. The survey originated near the International Boundary (River Mile (RM) 271.0) and extended down the reservoir, hereinafter referred to as downstream, about 1.4 miles downstream of the Montana 37 Highway Bridge near Boulder Creek (about RM 253). USACE continued the survey in 2017, completing a reach that extended from about RM 253 downstream to near Tweed Creek (RM 244.5). In 2018, the U.S. Geological Survey (USGS) Idaho Water Science Center completed the remaining portion of the reservoir from RM 244.5 downstream to Libby Dam (RM 219.9). The MBES data collected in 2016 and 2017 by the USACE was combined with the MBES data collected in 2018 by the USGS. The USGS also developed a stage-area-capacity table at one-foot intervals from the minimum pool elevation (2,290.84 ft) to the maximum pool elevation (2462.84 ft) using the new bathymetry data. The updated stage-area-capacity table will be compared to the current usable storage estimate of 4,979,500 acre-feet and published in a USGS Scientific Investigations Map. A 10-ft digital elevation model (DEM) and minimum and maximum pool contours also were generated from the bathymetric data and are provided in this data release.

First Release: April 2021

Revised: June 2021 (ver. 2.0)
Version History 2.0

Contacts

Point of Contact :: Ryan L Fosness
Originator :: Ryan L Fosness, Taylor J Dudunake
Metadata Contact :: Taylor J Dudunake
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase

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Max_Min_Elevation_Contours_Lake-Koocanusa.xml “Metadata” Original FGDC Metadata	View	18.13 KB	application/fgdc+xml
Max_Min_Elevation_Contours_Lake-Koocanusa.jpg “Preview Image”		27.1 KB	image/jpeg

Shapefile: Max_Min_Elevation_Contours_Lake-Koocanusa.zip
Max_Min_Elevation_Contours_Lake-Koocanusa.shx		9.36 KB
Max_Min_Elevation_Contours_Lake-Koocanusa.cpg		5 Bytes
Max_Min_Elevation_Contours_Lake-Koocanusa.dbf		16.27 KB
Max_Min_Elevation_Contours_Lake-Koocanusa.prj		541 Bytes
Max_Min_Elevation_Contours_Lake-Koocanusa.sbn		11.83 KB
Max_Min_Elevation_Contours_Lake-Koocanusa.sbx		596 Bytes
Max_Min_Elevation_Contours_Lake-Koocanusa.shp		2.31 MB

Related External Resources

Type: webLink

ASPRS LAS specifications	http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html

Type: Related Primary Publication

Fosness, R.L., and Dudunake, T.J., 2022, Bathymetric map, surface area, and stage-capacity for the U.S. part of Lake Koocanusa, Lincoln County, Montana, 2016–18: U.S. Geological Survey Scientific Investigations Map 3485, scale 1:100,000, https://doi.org/10.3133/sim3485.	https://doi.org/10.3133/sim3485

Material Request Instructions

Ryan Fosness

Hydraulic Engineer
Idaho Water Science Center
Email: rfosness@usgs.gov
Phone: 208-387-1319

Purpose

The purpose of this data release is to publish multibeam echosounder (MBES) bathymetric data and associated data products collected during 2016—2018 to support a an updated stage-capacity table for Lake Koocanusa. The USACE surveyed RM 271 to RM 244.5 during 2016 and 2017. The USGS surveyed RM 244.5 to RM 219.9 in 2018. This metadata record describes the maximum and minimum elevation contours in Lake Koocanusa.

Lake Koocanusa Maximum and Minimum Pool Elevation Contours, Lincoln County, Montana

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Material Request Instructions

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